Supplementary Planning Guidance Residential Extensions and Alterations

Draft for Consultation November 2014 2 Supplementary Planning Guidance - Residential Extensions and Alterations Contents

? Summary of Points ? ? Introduction ? ? Do I need Planning Permission? ? ? Other Considerations ? Building Regulations Sewers and Services The Party Wall Act Flood Risk Inclusive Design Legal Restrictions Skips and Scaffolding Deep Excavations ? Preparing Your Design ? ? Carry out an assessment of your ? house and the surrounding area Understanding the Character of your Area ? Extensions ? Rear Extensions

Contents Side Extensions Front extensions Side return Extensions Corner Plots Conservatories and Family Annexes Roof Extensions and Alterations Dormer Windows ? Other Alterations ? Porches Garages Sheds / Garden Rooms / Home Offices Driveways and Hardstandings Garden Decking and Platforms Balconies and Roof Terraces Walls, Fences, Hedges and Railings Satelite Dishes, TV and Radio Ariels Cladding, Pebble Dash and Wall Insulation Replacement Roof, Windows and Doors ? Sustainable Design and Renewable Energy ? Energy Efficiency ? Design for Security ? ? Householder Design Checklist ? ? Appendices ?

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Supplementary Planning Guidance - Residential Extensions and Alterations 1.0 you circumstances. in such on obligations places Wallwhich 1996 etc. Act aware Party Be of maintenance. the or work building for privacy, or home toaccess gain their need you if will or may affect your if proposal your neighbour Consult of house. your materials and existing design detailed the with in fits Ensure your that proposal of your neighbourhood. context the respects Ensure your proposal application. Regulation Building and planning a successful and solution design towards help a good will guidance This your on behalf. make and drawings application an prepare surveyor. or architect design, They can experienced an from advice technical get skilled necessary, If 3.0). (see required is Section application Regulation aBuilding or aplanning Find whether out Be a GoodNeighbour a Be Detailing&Use of Materials Look At Your Surroundings Follow The Design Guidance Get Advice You If Need It Before You Start Summary ofPoints 2.0 may be a fee for this service. this for afee be may or or Management Development contact please advice, detailed more want or yourhome to applies guidance this in contained guidance the how about unclear you are If against. determined be will applications planning criteria the on guidance design provides document this application, interestan aplanning in with public of the For members Council. the from advice pre-application formal more to seeking prior or application, of a planning submission to the prior read be should it architects and agents For applicants, bodies. decision-making other and council, of the Members elected interest an application, an in with public of the members architects, agents, applicants, by use for intended is prospective guidance This or Building Regulations consent. and/ permission planning require works anyproposed whether check to responsibility your is It decisions. planning in consideration planning asamaterial may and taken be into account guidance policy planning national and development policies plan with consistent must be SPG areas. or circumstances in particular applied be will development policies plan waythe the on in which guidance detailed out (SPG) Guidance Planning to set of use Supplementary the supports Government WelshThe Assembly may relevant. be also developmentpolicies plan other Plan, although Local of Cardiff to 11Policy City Adopted ofQuality) the supplementary Aesthetic and (Design primarily is guidance This Wales Policy Government’s Planning TAN and 12: Design. Welsh in the Assembly development outlined of sustainable context broader in the written is SPG This advice. further for council development is are bynot the thentype this advised contact applicants to covered guidance specifically aparticular if therefore exhaustive an to notintended be of is development. It document forms common most the assess and to guide used be will that principles broad out butinstead sets not, or required are approval Regulations Building or permission planning whether notdetail does guidance design This design. to due poor maintenance and problems with avoidassociated expenditure future can and cost achieved be at comparative can design value. Good its reduce often can of your property appearance the from detract which alterations Poorly-designed quality. design achieve highest the of proposals types these that essential therefore It is neighbourhood. wider the on butalso setting, own may its garden on have or notonly to ahouse impact, an alteration An permission. planning notrequire do that those including alterations and of extensions to forms all applied to intended be and design of good household, a house in multiple (HMO),occupation or subdivided into flats.It is based upon the principles as a use single in it is whether alter your or to property, extend planning when consider youwhat should out sets guidance This Cardiff. in of design standards to raising committed is Council of Cardiff City The Introduction Building Control Introduction . There . There 5 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 6

Supplementary Planning Guidance - Residential Extensions and Alterations 3.0 consent. consent. development or by planning aprevious aproperty on placed of conditions asaresult or Building Listed to alterations Direction, 4 Article an with Areas example to:Conservation development some in all flats, may have for Development rights removed. applies been This Permitted circumstances, certain In Certificate Development aLawful for application an submit to you required are permission planning requires your proposal asto whether determination For aformal permission. planning needing make you to without can your home extensions and improvements, what alterations on In general, development rights for extensions and alterations DO NOT apply to flats. to NOT apply DO alterations and extensions for rights development general, In Council’s Website. the on ‘HMOs’ for by and searching Portal Planning at the found be can Occupation Multiple in to Houses relating permission planning for need the and requirements Licensing above. resources the using you considering are alteration the for required is You dwellings. to single permission if development rights check should permitted Flats have different permission. planning flat you must obtain of floor atop Toflat ora into roof house or toextend units, tothesubdivide alterspace multiple a extend floor ground into flats. divided property or HMO involving proposed existingor an extensions and to alterations applied be also will document this within considerations design The WelshThe Government’s in England).those to differ regulations the as page the (Ensure of the top Welshis at the flag Portal Planning the use please permission planning without out carry can householder astodevelopment what a information For more permission. planning development all requires Not 2013 Order (Wales) (Amendment) Permitted Town the General under granted Planning Development is Permitted Country and rights. Development Permitted dwelling’s the within fall they unless permission of a appearance house external the may which requireand affect alterations planningExtensions council. by the action enforcement and/or prosecution to liable property the of owner the render can consents necessary the without works building Starting you may require. consents main to the relating set below is out advice General of design. standard toahigh ensure inorder SPG this in contained guidance the to consider you advised are notrequired is permission planning Even where cases in environment. surrounding of the character and form alterations can however have significantimpact on the appearance of asindividual properties well as the and extensions House principle. in welcomed are stock housing city’s Improvements to the property. aresidential to extend permission for are receives council the that applications of planning majority The adwelling. to alterations minor even for required be may consents other or approval Regulation Building permission, Planning Flats and Houses in Multiple Occupation Multiple Houses Flatsand (HMOs) in Development Permitted Permission? Ineed Planning Do . Planning: A Guide For Householders (July 2013) Householders For Planning: A Guide Do IneedPlanningPermission? A fee is charged for this. this. for charged is . Afee also provides information interactive house. affecting listed buildingsaffecting (See 5.0) section Consent. Building Listed necessary the first acquiring out It without to works is building listed to a carry offence a criminal statutory specifically is walls. boundary include concerned can buildingand principal the feature the not or whether of curtilage the within are that buildings and to may It associated apply also description. list the in mentioned grade its of regardless exterior, or interior structures, and objects including building of the to parts all applies This proposal. natureof the the on Works to listed buildings may require Listed Building Consent and/or planning depending permission, they interest that possess. historic and architectural of special features buildings. will therefore endeavour Thecouncil listed to buildings, preserve and those their settings of listed favourin preservation of the presumption a general be should there that is advice Government building. listed the of character the preserve and building original the to sensitively relate they where acceptable be only will buildings listed to Alterations area. in a conservation buildings to work anyunauthorised against action enforcement take can council The Remember: your of restrictions specific the check should first. area Youconservation painting. exterior and alterations works roof porches, specific of before sought be to permission construction windows, or of doors replacing or planning changing the include can works Such out. carried are requires it rather homes, their repairing altering or from occupiers prevent not does Direction 4 Article An Directions. 4 Article to due application may aplanning require permitted of development normally However forms Development rights. other Permitted under may permissible be extensions and alterations some area, youIf live aconservation in at www.cardiff.gov.uk/conservation leaflets, advisory and boundaries, area conservation the of maps download and view you area can a conservation within is your home youIf not sure whether are appearance of the area. or or areas enhance must to character the buildingspreserve Alterations conservation within previously. asoutlined Development application Lawful of aCertificate submit please permission planning requires your proposal as to whether Note: determination you if want a formal information thatit: are advice this to obtaining you of benefits The application. planning of a submission to the prior by provided Development Management be can advice Pre-application • • • • Conservation Areas Pre-Application Advice Listed Buildings Indicates where a proposal is unacceptable, saving you the cost of an application application an of cost you the saving unacceptable, is aproposal where Indicates avoids or stage refusal early at of because registration the rejection inadequate which validation, for ready and complete is yourapplication that ensure Helps buildings & archaeology) listed areas, conservation safety, fire ecology, land, contaminated transport, noise, landscape, (trees, input specialist for need any stage early an at Identifies yourdevelopment to apply to likely are policies/standards which Explains Specialist conservation advice should be obtained for proposals proposals for obtained be should advice conservation Specialist . 7 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 8 Supplementary Planning Guidance - Residential Extensions and Alterations as: such measures compensatory simple undertake can Homeowners ponds. garden in found often are newts crested in. Great ‘roost’ or to nest buildings use regularly which species all are Owls Barn and Swallows Swifts, Martins, asHouse such birds and Bats have investigations taken place. necessary untilthe undertaken are works no that asite. on important is It present are birds nesting and asbats such species protected ( SPG Council’s Biodiversity The information. further for web site Council Cardiff of Tree the consult you and should Officer trees to protected to work regard with apply controls land. Special private they on and usually are may protected be of any species size or value. amenity Trees public significant of be to thought trees protect to Council the by made TPO’sare Council’s Tree the Officer. from take you advice should atree Preservation affect works your proposed by(TPO). If protected Tree are area Orders local to the Preservation important are which trees Some council. the to youIf live area, mostin works a conservation to notification require trees 6 weeks written prior issues. legal and trees on advice further offers Guide AHouseholder’s Trees Cardiff: In Recommendations with in accordance may required be assessment a tree hardstanding, or extension by a proposed likelyare toaffected be structures) root and canopies (including trees where to maturity. circumstances In growth future for spacing sufficient allow to and light of loss over concerns to due loss vegetation subsequent systems, drainage with problems building, the with problems design to avoid hedging structural and trees mature and extension an between adequate distancing for stage givendesign be at the should Consideration provides further advice. advice. further provides SPG Areas Sensitive by Archaeologically even The works. minor affected be could which implications archaeological may have city of the parts not) or (whether ‘listed’ to buildings certain in extensions or Alterations • • • • Protected Species Species Protected Tree Preservation Orders Preservation Tree Trees Archaeology Creating a pond or bog garden bog or apond Creating box owl bat boxes abarn Erecting or areas wildflower and trees native hedgerows, to include your garden Landscaping boxesProviding bird , with the assessment being used to inform design. to inform used being assessment the , with BS 5837:2012 Trees in Relation - to and Design, Construction Demolition Part 1 Part & Part 2 Part ) explains the action which should be undertaken if if undertaken be should which action ) explains the City City refer to or the advice, for 4.0 Improving The Flood Performance of New Buildings New of Performance Flood The Improving guidance, the in found be can of buildings Natural the go please Resources Wales establish employed website be To should area. measures design risk appropriate which and flood zone flood a a in is within property your development whether for adopted be to need principles design Careful surveyors. competent of details hold (RICS) Surveyors Chartered of Royal Institute the and be sought as the council does not control this matter. should The Surveyor Wall Faculty Party of professional Party Wall acompetent of Surveyors advice (FPWS) the required, is guidance further If Booklet Explanatory Wall Act etc. 1996: The read you Party For should guidance, work. you start before to check advisable approval. always Regulation It is Building or permission planning needs work not the or whether to comment, opportunity the give and them your neighbours you that notify requires Wall 1996 etc. Act lofts), walls and Party the boundary (including to aboundary near or on work out youIf intend to carry a proposed extension. of implementation and viability Failure stage. the may to so do jeopardise pre-development at early an sought be should Control sewer. have apublic on impact an your of Building proposals where advice The them with to consult obliged is Control Building and Sewer Public network the for Water responsible are Welsh Cymru Dwr Cardiff, In sewer diverted. to has be the or existing conditions to suit altered the be allowed. is that Your extension size of the the have might plans affect of a sewer to can position The providers. by required service of access any rights must not compromise extension An considered. be should mains of any electricity and water development sewers, pipes on gas mains, effect The Schedule 2 of the Building Regulations 2010 (as amended). Regulations Building the 2of Schedule under listed are These conservatories). some and greenhouses sheds, garden buildings, detached small (e.g. Regulations Building of the exempt requirements the from considered are of work types Certain revise your planning and vice application versa. Regulations Approval and any sought changes by building regulations may mean you have to Building you have obtained that NOT mean does permission planning Obtaining Important: advice. further for Control Building any out Contact works. safety. carrying You before electrical advice to seek advised strongly are and accessibility insulation, thermal conservation, energy resistance, fire stability, structural as such matters technical with deal Regulations Building permission. asplanning same notthe is This Flood Risk Flood Wall Act Party The Sewers Services and Regulations Exempted Works from Building Regulations Building . . Further information on improving the floodperformance Other Considerations . 9 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 10 Supplementary Planning Guidance - Residential Extensions and Alterations contains some helpful guidance. helpful some contains website (HSE) Excecutive Safety structures and pose a risksignificant topersonal safety. They should always be guarded. The existing buildings excavations Deep orboundaries. and undermine destabilise existing can buildings or carefully, near especially considered be should works drainage excavations and Deep foundations for conditions. these with comply hoardings and scaffolding skips, the that ensure to Highway Inspectors Council by made are Cardiff Inspections carriageways. and verges footways, licences and Permits etc.). of bags sand of (pallets bricks, any deliveries to accommodate your property on own space pavement the on highway youor ensure have placed –please not be should enough materials Building council. of the remit the from and control planning from distinct and to separate note are covenants that asolicitor. consult important is It should you matter this in guidance or advice you If require deeds. set your in out be title of covenantswill Details of your property. development and use the restrict covenants which may legal there be controls, to planning addition In future. the in may needs change that recognising whilst life daily in everyone assist be can bathroom floor ground can and users, wheelchair and a chairs push with families including of households, range to awide helpful providing and access level Incorporating proposed. are extensions and alterations when considered be should to aproperty accessibility improving for potential The Deep Excavations Deep Scaffolding &Hoardings Skips, Legal Restrictions Inclusive Design

are issued by the council for skips, scaffolding and hoardings to be placed upon upon placed to be hoardings and scaffolding skips, for by council the issued are Health Health and 5.0 technologies. of use new environmental or ofuse materials of scale, terms in ordinary of out the are or location, aprominent in of aproposal terms in instance, for to help to ensure better quality buildings. This advice is available for developments which are significant, TheCommission principles. design urban of good account taking surroundings, immediate to how it relates its and site context dwelling, existing the of character the with in’ ‘fits proposal the how show and explain should DAS The information. detailed further provides Note Guidance The application. regulation a building or application Consent Building Listed (DAS) Statement application, a planning Access and mayto accompany required be A Design matter. a planning not are ownership land and disputes boundary to relate that issues that note Please , (See 1996 Wall Act etc. 9). page Party of the requirements the with boundary, wall or you ashared must comply affects yourIf proposal process. planning the through transition efficient more a in result may proposals your of informed well are they Ensuring application. your submitting yourbefore plans about to your to speak neighbours idea agood therefore is it goodwill, To writing. in your application maintain to, to21 support and give or them object daysproposal to formally of your them to inform to your neighbours write we will received, is application your planning When When you have a firmidea ofwhat you want todo it is always good practice togo and see your neighbours. possible. if clients previous from references to obtain idea you. to agood assist is It someone mayto and recommend able be work similar out carried has who you may someone know Alternatively B. Appendix in provided are details Contact list. members RIBA’s or Architect AABC Conservation as IHBC, such a register on specialist aheritage using consider you building, alisted should affecting or area a conservation within Technologists (CIAT) of Institute Architectural For proposals advice. provide Chartered can the and Royal the Town addition In Institute, (RICS) Planning (RTPI), Surveyors Royal The of Institute Chartered architect. an appointing and selecting on Wales (RSAW) guidance provide of Architects Royal Society The extension/alteration. you to help achieve should awell-designed and guidelines these with familiar be They will application. your planning to prepare You designer or architect to acompetent use advised are Design Commission for Wales Commission Design Access and Design Statement Speak to your Neighbours Advice Get

offers a design review service which provides expert advice to members of the public public of the to members advice expert provides which review service adesign offers Preparing YourDesign ein Acs Statements Access & Design

11 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 12

Supplementary Planning Guidance - Residential Extensions and Alterations 6.0 scale, massing, height and detailing. and height massing, scale, of layout, issues density, address satisfactorily and of use resources effective of context, understanding a sound they demonstrate where may appropriate be solutions design Innovative contemporary fits and appearance balanced character. a in results or development style strong avery has neighbourhood the if the particularly scene, street wider into the comfortably that ensure to materials and detailing positioning, of scale, terms in context to their sympathetic be should extensions and alterations House area. givenscheme’s be towider the the should on impact consideration sites, prominent on those or schemes, larger for estate, while or street of the may character relate to the ‘context’ schemes, For smaller area. surrounding of the context and character relate well to the should to aproperty additions and alterations All of windowsand Size andshape doors Understanding the Character Understanding of your Area Frontage of a typical street with semi-detached houses semi-detached with street atypical of Frontage Gaps between properties Materials house andthesurroundingarea Carry outanassessmentofyour pattern ofwindows design of extensions design Size, positionand Symmetry and and doors Shape andpitch Boundary treatment should respectthe character ofthe of roof street 7.0 main house. neighbours. to existing the subservient dwelling. is toit ensure order in building of the gable end the set from in be preferably should extension The properties Design principles: of your neighbours. however do Rear daylight extensions outlook and extension. the have on front toor potential impact the aside than area surrounding the and existinghouse the on may impact have extension visual A rear less • • • • Rear Extensions site the to adjacent or within trees on impact the Consider size small unreasonable an to space garden Avoid reducing neighbouring in rooms habitable to outlook and light natural Avoid blocking dwelling original the to subordinate Be ý þ

the to subordinate is extension of design and scale Position, your of outlook and daylight the on impact not should adversely extensions Rear Extensions 13 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 14 Supplementary Planning Guidance - Residential Extensions and Alterations Extensions are subordinate to main property and the roof style compliments the host building. host the compliments style roof the and property main to subordinate are Extensions for maintenance.future allow to remains space sufficient that ensure will it level practical a On property. their extend also your neighbours should effect to prevent help also It will a terracing cramped. not appear does scene street the tothat ensure help can boundary. This neighbouring the set from in be should extensions Side Design principles: subservient. more appear extension make will line. This the existing ridge the from set and down property original of the front the from back set be should property pair. detached to asemi asabalanced storey extension appear side A two they that important It is ofpair semis. the but also of not just your property appearance and character the from not detract does to make extension the sure that crucial it is property a semi-detached With of pair dwellings. of the symmetry the on impact significant a have to likely are dwellings, semi-detached to particularly extensions, Side • • • Side Extensions Avoid blank elevations where they front the highway the front they where elevations Avoid blank context and house existing the to appropriate be should Proposals house existing the compliment or match should detailing window and Materials

þ þ and significantly change the appearance of the house and street. and house the of appearance the change significantly and Front that extensions are larger than a porch are usually as unacceptable they are over dominant house. the of character the respect not does and line building front of forward breaks extension Front street. the of appearance the on effect havecan asignificant line building of the Any development variable. forward more are others whereas line have building a clear areas Some of judgment. a matter is case Each a street. along of houses sides or by fronts the formed aline considered is line building The line building the behind sited be normally Front should extensions street. of awhole character the undermine also butcan property, to the notonly detrimental is features of these loss The entrances. decorative asbay or such windows features on impact can They of aproperty. emphasis and character overall the architectural change also Front can extensions properties. to neighbouring privacy of or light loss the in result and overbearing be also can It scene. street the featurein dominant the become and of ofa row properties rhythm the on negitively impact can excessive projection An extensions. front for have usually road scope the more from well back set properties detached Large scene. street the featurewithin overly an prominent appear will a porch than other extension of front any form terraced) and semi-detached (in particular For properties, most the of character the on impact significant a have can neighbourhood. property a of front the to Extensions Front Extensions ý ý 15 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 16 Supplementary Planning Guidance - Residential Extensions and Alterations boundary. retained to relative low set Roof of any impact infill extension. visual the may to reduce asglazing, help such weight light appearance, in or soft are that Materials your neighbour. with boundary the along fence ofwall a2m or high construction the for allow Development would Permitted that fact eaves the the set at with a leveldesign respects that Side Return extensions with flatroofsare and often overbearing youconsider a should pitched, ‘lean-to’ your on neighbour. of extension impact the to minimise order in extension of the roof of the design and givenheight be to the consideration careful that important is It property. adjacent the on have impact can overbearing an extensions Return Side upon: dependant is space this infills which extension A successful ‘side-return’. asthe known often property, of the rear to the passage wall or boundary to gap the a narrow creates side, which one on boundary the usually setare in from 3storey 2or annexe. have rear that houses original an These of terraced anumber are there Cardiff In • • • Side Return Extensions Whether the adjacent property has an existing infill extension infill existing an has property adjacent the Whether properties between levels land The proposed design The overbearing. is extension of height and Depth þ

boundary is overbearing. overbearing. is boundary on on position and extension the of Height ý ý

Roof matches that of host building. Extension respects building line to street. to line building respects Extension building. host of that matches Roof boundary. side off set and dwelling host to subordinate Extensions dwelling. main the to scale inappropriate an of are and line building to conform to fail Extensions character. and site context to the subject may acceptable be above criteria to the not conform do which extensions instances, such In area. to ahousing feature’ entrance at the of a ‘gateway creation to the contribute plots corner developments on where may circumstances There be side. to the one and property, the facing road to the one lines, building two be will there cases most In respected. be should of which each line, building likely are to established have one at junctions than more located plots and plots Corner relates. it which to streets the of both along line building the to adhere should anyextension effect, To a‘tunnel’ avoid creating Corner Plots Corner þ ý 17 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 18 Supplementary Planning Guidance - Residential Extensions and Alterations overlooking. boundary neighbouring along glazed with the A conservatory glass a overlooking. privicyboundary the obscurelywall to with neighbouring Aalong a solid conservatoryprotect and to preventprotect requirements. regulations building from implications possible the and Wall 1996 etc. Act You Party of the permission. requirements note the also should planning for you apply when them on notice to serve need also you and will to this, do permission overhang. You will likely guttering it is the your that neighbour’s need will boundary up to the right build boundary.you If your property own within accommodated fully be can conservatory Ensure the that dwelling. of anadjoining boundary to the nearest side to the glazing obscured wall or asolid incorporating necessary, if or siting, achievedbe by careful privacy. neighbours’ can This not compromise do taken conservatories be tothat ensure should Care as a extension. considerations brick same to subject are and property your to extension an as treated are Conservatories Conservatories þ þ privacy and prevent prevent and privacy

appropriate fee. the and permission planning require will of abungalow Any demolition weight. extra the support can existing bungalow the to that ensure advised it is to abungalow alterations roof for submitting Before of neighbours. privacy the compromise could which areas private previously overlook can dormers (seeof new loft addition ?), the page section Windows cases some asin Dormer set the in out You windows. dormer advice adding and the bungalow, pitch follow roof should the bydormer increasing a to create appropriate It may more be overlooking. ofand overshadowing properties neighbouring on effect the to minimise designed be should space living extra to create extensions roof for Proposals neighbours. of surrounding conditions living the affect adversely not should extension the and possible avoided be where should Overlooking existingdwelling. of the those complement should design and materials size, the location, of extensions, types other with As to neighbours amenity and of privacy to loss lead can and area, an of appearance and character the in change significant a to lead can bungalows, to alterations Roof character. or style strong avery has neighbourhood the if particularly scene, street wider the into comfortably fits which appearance balanced a in results development the that ensure to materials and detailing positioning, of scale, terms in context to their sympathetic be should extensions Roof extension. or addition any asfor alteration, details other window and materials taken be over should to detail size, position, attention and care same The windows. of dormer installation the in result will work the butoften solution, design astandard be cannot there mean types roof Different structure. existingroof of the study), or room, suitability (play guest to the room, space subject roof the within accommodation way extra of achieving effective an is extension roof or conversion A loft will Areas alwaysConservation require planning for which permission a is fee applicable. in site) (Welsh approval. Portal The Planning guide. provides a comprehensive extensions Roof howeverthey will Regulation Building require permission, planning not require do extensions roof Some design their and house a of careful consideration. needs appearance the on effect significant a have can extensions Roof Roof Alterations Increased and Roof Height Roof Extensions 19 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 20 Supplementary Planning Guidance - Residential Extensions and Alterations could look over-dominant and out of character with the surrounding area. area. surrounding house the with a character of out and of over-dominant look could roof the of raising significant the height, same the are roofs most where area an In as buildings, nearby other of roofs the levels. associated site and of the context or the within considered be will proposal Anysuch original, appropriate. the reflect should pitch its raised, is roof a Where house. of the appearance and character the on effect may roof, tohave the which addition may adetrimental overly an in large result headroom enough getting shallow. too is pitch circumstances roof such asthe In conversion for may suitable notbe spaces roof Some scene. street the on impact its to given be should consideration careful space, roof the in headroom increased allow to raised be to needs ridge aroof Where ý ý which directly back on to each other, is normally required to avoid overlooking and to protect amenity. protect neighbouring to and overlooking avoid to required normally is other, each to on back directly which a of wall rear dwellings of windows the room habitable rear the 21m and between boundary, between rear its and 10.5m property of distance a storey, single above extensions of case the In bathroom. or alanding serve sensibly only should it room the in window only the is this If non-opening. and glazed obscurely avoided be be or generally should garden, or property therefore carefully.be positioned First side floor windows, which lookto across directly your neighbour’s must extension an in Windows to your neighbours. of privacy loss adverse in notresult should Extensions scene. street to the extension of the appearance and prominence the and your home around available space the including factors, of number a by influenced be to likely is Siting setting. its to,and existingbuilding the subservient and keeping in must be with, of extension an form and scale The

Overlooking Siting, Scale &ImpactStreet on Scene 10.5m 10.5m 21m

21m 10.5m 21m

of privacy. kitchen) willavoidloss dining, bedroomand room window(lounge, principal neighbour’s overlooking ofa there isdirect Allowing 21mwhere height. to betakenofbuilding together.needs Account brought slightlycloser dwellings couldbe more than30degrees, If theangleofrotationis

21 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 22 Supplementary Planning Guidance - Residential Extensions and Alterations impact upon the neighbouring property. neighbouring the upon impact The location and scale of the is extension to appropriate the existing dwelling and minimises any property. aneighbouring upon impact oppressive and overbearing an create would extension the of scale and location The impact. to order in an avoid un-neighbourly privacy of loss and overshadowing significant appearance, asto so avoid height and overbearing an width depth, in limited be and dweling main the to Two subservient be property. of aneighbour’s should garden to the appropriate if storey extensions adjacent boundary to the close very positioned notbe should extensions two-storey rule, ageneral As properties. sunlight to neighbouring of daylight or loss unacceptable an in result or to your neighbours overbearing not be should Extensions Avoid Overbearing Avoid ý þ area. garden rear useable and asufficient retains and scale in modest is Extension area. garden overdevelopmentprivacy. inthe notresult original of should the Anyextension of and light loss and overshadowing through amenity neighbouring on impact have adetrimental could and plot the within space of inadequateamount amenity an in result will over-development of aproperty the impact, visual the to addition In extension. of amount finite a only accommodate can dwelling Any yourhouse. of location and size the to according vary will This ratio. garden back to extension a‘reasonable’ maintain should house your of rear or side the to extensions Any existing blend harmoniously prominent with positions the are best property. in particularly roofs, Flat roof. aflat than appropriate always more be almost will roof gabled or hipped a pitched, building, original of the style architectural the on Depending addition. of the subservience tothe and ensure addition, its and dwelling original the between distinction the to emphasise roof original the lower than be usually of should any height extension ridge The house. original the of part be to appears extension the that ensure to materials and pitch form, style, of terms in roof main the match should extension an of roof The ý Form Roof Impact on Amenity Space, ImpactAmenity on Amenity Privacy Visual and þ þ and rarely appear as though they they though as appear rarely and problems maintenance long-term present can they as avoided

23 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 24 Supplementary Planning Guidance - Residential Extensions and Alterations in a visually discrete manner. rear. discrete to the avisually in storage bin for to provide preferable is It they that stored are so located to are be bins refuse where consider you should extension an planning If SPG Facilities Storage and Waste ofguidelines Councils Collection the the with accordance in facilities waste, composting for and made be recycling should Adequate provision maintenance. property to undertake access easier house, and, for the tothrough go needing without garden rear to rear, the at the stored be access easier to bins for allow it can then set is boundary away the extension the from If property. the through passing rear, to the by than other property of the side or front the from haveMany access dwellings adirect site. the within location plantedanother in be should replacement unavoidable, is of a tree loss the If growth. future for room it has that extension to the close to remain and is significant a young if tree that ensure Also growth. future and structures existingroot to accommodate of designed removal the avoid to extension trees Where trees. your healthy site should You retained. be should possible, wherever and, value amenity provide vegetation and hedges Trees established and over-development an is Extension house. original of the context and character to the relation in considered willbe area ensure retention ofthe in thisofspace. garden instance a Proposals significant should Development limit, beyond Permitted the / outbuildings of extensions groups or any extensions gardens, private sized good includes character established the where areas in those or houses, For larger and garden. house the of size and context individual the upon dependent is figure this although retained, be should siting and shape A minimum of space. 25 ofsqm appropriate an of amenity private form a useable and line washing a storage, cycle and bin accommodate to retained be should space garden Sufficient Bin Storage Bin Rear Access

and hedges are retained then the foundations for the development must be the for foundations the then retained are hedges and ý of the garden plot. garden the of . property. original the with toextension integrate help the also can courses brick or quoins bargeboards, decorative as such of details repeat overall The the in design. elements asthey important are fascias and sills bargeboards, brickwork, decorative ofstringcourses, plinths, continuation the includes This extension. any on appropriate, where repeated, be should existing property the on detailing architectural The property. of the front at match the colour toa ensure used be should building original of the rear the from tiles roof necessary, If appearance. visual acceptable a more and materials in the a neater is join there that so slightly back extension to set the appropriate therefore is house.It original to the compared extension of the appearance the in difference adistinctive be will there used, were originally that of bricks type same the from is it if even your extension, you construct When appearance. in have changed and weathered bricks original likely is it the that modern, very is your property Unless important. is pointing and brickwork Matching house. existing the complement or reflect should detailing and materials All SPG. Standards Parking and Circulation Access, adopted Councils the with line in be should Parking council. to the acceptable to astandard of your property boundary the within replaced may this have space, to be over built parking be would existingcar an extension an Where users. of highway vision/visibility the or space parking or area turning any existingaccess, affect or not restrict It should provision. parking car not have highwayor on should impact safety adverse an extension An Detailing and Materials Detailingand Highway Safety &Parking positioning and size. and positioning design, of terms in dwelling original the in those reflect also should windows appearance.New can leadmaterials to an unattractive Conflicting property. existing the in used those complement to fails extension the of detailing and materials The appearance aconsistent achieve to order in dwelling existing the on those match generally should doors and windows new of materials and style positioning, size, The ý þ . 25 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 26 Supplementary Planning Guidance - Residential Extensions and Alterations The extended gable wall should match the existing dwelling. existing the match should wall gable extended The property. asemi-detached on extension roof gable to Hip front. at match the toacolour ensure slope roof front the to re-cover salvaged be can property original of the rear the from tiles or slates old enough Often dwelling. existing the of materials the match also should wall gable extended The roof. original the of those match exactly to slates or tiles have roof should extensions gable to hip All street. of the of part that character of the features important are buildings the between space and roofscape the when so especially is This terrace. or houses of of ahouse,pair semi-detached appearance the unbalance can roof to agabled of ahipped conversion the in results that extension An Hip to Roof Hip Gable Extensions þ appearance of a conservation area, its removal its area, of aappearance conservation or will unsympathetic alteration be resisted. and character the to contribution a positive make chimneys, of a chimney, group or Where permission. planning removal require or of achimneywill replacement alteration, installation, the areas conservation Within to flues safely.and of combustion products the chimneys discharge they that ensure can of design the on requirements specific places J Part Regulations Building The supported. be will possible where of chimneypots reinstatement and of stacks rebuilding The skyline. of the overall to the character contribute and feature of many properties Chimneys important an are properties). semi-detatched of pair atypical of rear the above details (diagram house the of features to relate and matching spaced, evenly be should lights Roof alone. views private to limited is even this if impact, their reduce to order in lights any roof of arrangement general the to given be also should Consideration roof. the of plane the above protrude not do which type’ a ‘conservation of be should and area conservation the within views prominent from visible readily not are they sothat positioned number, discreetly in few be should of areasinstallation the roofIn conservation lights requires planning Roof permission. lights prominence. may reduce lights help to roof Flush-fitting prominent. unduly ofcharacter and a dwelling, theandthat style it not does reflect look and positioning that its proportions taken be to ensure should elevation, care prominent other or front, to the required is light a roof Where þ

Chimneys Roof Lights ý 27 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 28 Supplementary Planning Guidance - Residential Extensions and Alterations hips. of the clear and ridge the from set down be should dormer the stairs, for adequate headroom to provide a requirement is there Where impact. visual and of privacy terms in inappropriate be can required, is annexes, permission of rear planning side where to the positioned Dormers street. the and house of the appearance have the on impact abig dormers rear. elevation the –usually prominent least the on Front-facing positioned be normally should Dormers Position ‘top-heavy’ appear to property the cause can are over-dominant and dormers roofed flat Large, windows should:Dormer area. surrounding the significant and ahouse of a appearance and have character can the on impact they as carefully considered be should windows dormer of design The Design windows. of dormer throughinsertion the space additional to create may it space, possible be existingroof an within inadequateheadroom is there Where • • • • • • • • Dormer Windows Dormer Positioned to minimise impact upon neighboring amenity amenity neighboring upon impact minimise to Positioned dwelling. existing the within evident any symmetry Respect dwelling main the complement or reflect which materials in finished Be distance appropriate by an side either from in and ridge the from down wall, external the from up set Be roof existing the to subservient appear they that order in scaled appropriately Be feature alocal are they unless adwelling, of elevation front the on avoided Be surroundings immediate or street the of context the to well Relate positioned/located are they which on dwelling the to well Relate ý appearance of the house and street. and house the of appearance Front can dormers have a big impact on the . the beyond or to, not extend should dormer The plane roof within scaled modestly Dormers any hip. breach it existingroof, wall should of to,the nor not extend beyond external should or the dormer of the roof The to aroof. subservient therefore and well proportioned appear dormers that wall. important is It external the set and up from ridge the roof, of the from set side down either set from in be should dormers this, To located. is it which upon roof to the achieve appropriate be should window of adormer scale The of adwelling. roof original of the as part they were designed asthough look should and house original the notdominate should windows Dormer Scale þ ý ý window alignment with building below. building with alignment window poor roof, within scaled excessively Box dormer any hip. breach it should nor roof, existing the of wall external below. windows with align and 29 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 30 Supplementary Planning Guidance - Residential Extensions and Alterations and opening and also reflect any reflect evident symmetry. also and opening and materials of proportions, terms in house of the rest the in those match should dormer of the windows The types. window Avoid mixing Style Window materials. cladding of use surrounding to the limit roof through the use of materials. The window(s) should fillthe ofmajority the front ofthe dormer in order existing relate well to and the dwelling/roof original to the subservient appear should extensions Dormer Materials 8.0 street character the scene dwelling. adjacent Scale the of amenity the on impact have to minimal within designed be should property aneighbouring to porch close Asituated porch of theandproperty. mainpitch design the The house. roof reflect should original the to subservient be and of and character the complement to designed be should Porches the is property. of a appearance the from detracting significantly porches designed poorly design with streetscene, the haveon impact can alarge alterations small and point focal main the is property of a entrance front The structure. to enclosed an canopy asimple from take many can forms A porch out of of Porches ý Other Alterations

31 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 32 Supplementary Planning Guidance - Residential Extensions and Alterations Original doorway features are lost through the insertion of a secondary door asecondary of insertion the through lost are features doorway Original supported. notbe will applications such general in and of entrance type of this enclosure the for may required be permission planning areas conservation In featuredoorways. or tiled ornate with often doors, front have recessed Cardiff in houses Edwardian and terraced Many Victorian dwelling. the of appearance the from detract can of The a door,insertion second external to flushbring the thewith entrance front of the property Recessed Entrances Recessed ý ý Although car ports do not have enclosing walls, the same design issues apply. issues design same the walls, have enclosing not do ports car Although charges. current style should also match that of the roof of the original house. original of the roof of that the match also should style roof proposed existinghouse. The of the rear the in used ones to the similar be should materials The property. of the residents future existing and for of amenity loss to the contributing natureof gardens, green generally the theyand from may detract spaces of use garden the may storage intensify than other purposes for used if buildings garden Large house. main as well as the context, and character to local positively respond should and of neighbours, amenity and privacy the respect should of your property curtilage the within Any structures planning and Building permission Regulation approval. require always will use business or commercial dwelling, aseparate to agarage of Conversion required. approvalbe will Regulation Building Portal Planning the also your See garage. converting for from sought be should Advice openings. and materials of proportions, terms in property main the match should availability. doors parking and in windows New aswell asareduction building of the appearance external to the changes in result can space living into additional of existing an garage conversion The from pavement obtained be the should across of a new crossover construction the for consent Separate house. to the access pedestrian safe with together garden, front the of out and in car a the in manoeuvre planting and You garage. landscaping of the proposed some alayoutretains design to which should be will it easy or difficult how to given be should Consideration should: structure adetached or extension an whether garage, A new council’s highways section council’s • • • • • • • • • Sheds /Garden Rooms Offices /Home Conversion of to aGarage Space Living Garages Use materials which complement the main property main the complement which materials Use development of impact the reduce to used be should landscaping Suitable gardens neighbouring of amenity the from NOT detract should development The garden the to subordinate visually be should design and scale Siting, house. the from overlooked being of capable Be house the of forward project Not location and scale size, in house, the to subservient Be house main the to detailing have consistent and materials same the of built Be surroundings its and house the of proportions and character style, the Reflect Development Management . They will provide further information about construction standards and and standards construction about information further . Theyprovide will . as to whether planning permission is required required is permission planning as to whether 33 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 34 Supplementary Planning Guidance - Residential Extensions and Alterations pavers as such surfacing permeable Non highways section council’s the from may of anewrequired crossover be construction the for consent pavement. the Separate highway toacross the a crossover via connected must be hardstanding The highway. pavement/ of the inwards to prevent obstruction open gatesthey should with driveway enclosed to is be over and pavement. hardstanding the the If the from out project must vehicle no and (length) 4.8m (width)x 2.4m is space parking car standard A gardens flowerbeds and hedges. Forfurther advice please see as such areas landscaped water soft into to allowing drain garden, remaining front of the part small cover a only or surfacing permeable use you should driveways hardstandings and considering When links. of internal retention the and site access facilities, kitchen/bathroom space, asgarden such building, main the with of facilities sharing the through demonstrated be can Dependency where: acceptable be only will Annexes document. this in outlined extensions for guidance general the follow you should a relative, for dwelling, not a separate and accommodation to is provide of an extension purpose the If • • • Department for Communities and Local Government 2008 Government Local and Communities for . Department Driveways Hardstandings and Annexes Family

Clear dependency is retained at all times with the main property main the with times all at retained is dependency Clear building the accommodate comfortably to size sufficient of is plot The site the to proportion in modest is building the of appearance and scale The WATER

WATER

Guidance on the permeable surfacing of front front of surfacing permeable the on Guidance þ þ porous or permeable material. permeable or porous from constructed /hardstanding Driveway area. lawn remaining the into directed is water surface that providing garden, front the of may part cover . . The positioning of decking should respect the rights of neighbouring residents to enjoy their their enjoy overlooking. to intrusive of subject the being without residents gardens neighbouring of rights the respect should decking of positioning The K Part Regulations Building ofThe prevent falls. risk the to guarding or protection edge suitable with provided be should platforms and of decking areas Raised from outlook of loss or overshadowing significant in result amenity. visual on impact have or dwellings adetrimental neighbouring not should screening any but trellising as fencing/ such screening to install it may possible be overlooking, to reduce circumstances, some In garden. adjacent an in outbuilding an wall or boundary high a as such screening, permanent sufficient is there where and boundary the from in set ideally It should points. vantage public from viewed easily or located prominently not be should Decking of: terms in assessed be will Proposals of neighbours, amenity and privacy the respect should of your property curtilage the within Any structures • • •

Garden Decking and Platforms and Garden Decking Loss of character or amenity of the area the of amenity or character of Loss Dominance gardens) and houses (inneighbouring privacy of Loss provides suitable guidance. ý 35 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 36 Supplementary Planning Guidance - Residential Extensions and Alterations Roof terraces should not allow for the private ammenity of the neighbouring properties to be be to properties neighbouring compromised. unacceptably the of ammenity private the for allow not should terraces Roof roof terrace. or in to abalcony roof existing flat an to change required be will application Regulation A Building property. elevation of the the or roof of the appearance the affecting adversely without terrace a accommodate to sufficient be should roof the of dimensions The aparapet. or roof of apitched slope the behind set back be should terrace A roof givenfollowing: be to the therefore should Consideration security. privacy, stability, and spillage light daylight, noise, overlooking structural include Potential problems neighbours. on impact the account into take you should terrace roof or abalcony considering When • • • • • • • Balconies and Roof Balconiesand Terraces The The terrace should not result in overlooking of rooms habitable of adjacent properties ground the from invisible be and slope, roof the of line the behind back set well be should balustrades Any falling of risk the prevent to designed are guarding and Balustrades a floor as loading additional accept to designed is area roof flat existing the that Ensuring burglars for opportunities climbing avoid creating to need The reducingwithout daylight and sunlight or outlook gardens, or rooms habitable of overlooking prevent to planting or screens of Use space) wall available entire coverthe necessarily not need (a balcony overlooking minimise to setbacks of Use ý visible a from road. to are and on they face where permission planning require satelite areas, dishes conservation Within Antennas, Of Installation 2008 Welsh Government Dishes, Satellite Including The For Guide Planning Householders A in outlined is information More them: placing Consider aspossible. of as out much sight aerials and Keep dishes properties. neighbours’ and street the from views the respect should equipment such impact, visual the to minimise order In harm which additions area. an of stark character the very be can property a of side or front the to walls or fences High requirements. specific Wall may 1996 impose etc. Act Party The area. of the amenity visual the harm and street of the character open the disrupt asthey could gardens plan open have which established areas in resisted be will Front enclosures security. and siting appearance, of both terms in considered carefully be should railings or hedges to walls, fences, Alterations reinstatement. given be to their should have removed,railings previously consideration been or walls, hedges Where repaired. and restored retained, be walls should and gates, railings Original street. the and area an of character the on impact havesignificant aboundaries, front particularly treatments, Boundary • • • • • • Satellite Dishes, TV and Radio and Satellite Aerials TV Dishes, Walls, Fences, Railings Hedges and In the rear garden rear the In garages or roofs lower On roof extension arear On walls side On parapets roof Behind slopes roof Within . ý 37 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 38 Supplementary Planning Guidance - Residential Extensions and Alterations advice note. advice Areas Conservation in Replacement & Repair Window the see please areas conservation in replacement window on advice For further permission. planning requires often areas conservation in door and to windows Alterations houses. of of apair semi-detached one is or of aterrace part forms property the where case the particularly is This area. of the appearance the affect and of your home appearance and character the change radically can doors, and windows replacing or openings, window or door Altering permission planning require will tiles or plastic timber,render, dash, pebble stone, artificial stone, with or insulation wall anyexternal in Area aConservation in properties of Cladding advice. further for Control Building approval; contact you should likely is Regulations Building to require property the outside or envelope’ inside either ‘thermal the on Work rot. timber and may condensation in This result them. behind trapped be can Rainwater / ice bricks. air block and courses damp bridge can treatments External house. of the integrity structural the on effect adverse have will it whether an consider please wall treatment any out external of carrying youIf thinking are Replacement Doors and Windows Wall Insulation Pebble Cladding, External Dash, . 9.0 Government the the with accredited is who contractor experienced and by out atrained carried be should Installation be needed. may work strengthening some and checked to be need will load the to carry existingroof of the ability apply. normally will The Regulations Building your on roof turbine or panel asolar to youinstall If wish consider: to need you will turbines wind domestic With roof. the with closely integrated more be can Flatcollectors required. is plate solar appearance and design Sensitive details. chimneysgable and lights, as roof such existing features with to balance positioned be should and above ridgeline the installed not be should panels PV and Solar roof-slope. inner or arear ason such existing features integrated with and location unobtrusive an in positioned be should They likely their impact. and turbines and panels of the givenvisibility to be to the needs Consideration to wish you Should points: following the consider efficiency. to you wish may measures, design sustainable energy further introduce for standards minimum impose Regulations Building energy-use. reducing for of opportunities take account should extensions or alterations for proposals All irgnrto Criiain Scheme Certification Microgeneration • • • • • • • • • • Solar Panels, Solar Photovoltaics Turbines Wind and Efficiency Energy Its colour Its size physical Its roof the of part highest the above extend will it high How property the on installed be to is turbine the Where recyclable materials. and recycled sourced, locally or natural as such materials, of choice sustainable screening natural of use or roofs green as such planting, of impact systems collection water rain and recycling water Grey power) (e.g. solar systems energy renewable of Suitability ventilation natural and heat of conservation the maximises which layout Internal effects micro-climatic /other sunlight account take to siting and Orientation . Welsh Assembly Assembly Welsh the available is from guidance . Further Sustainable Designand Renewable Energy 39 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 40 Supplementary Planning Guidance - Residential Extensions and Alterations of the Building Regulations will also be relevant. be also will Regulations Building the of requirements the additionally assessed; be to need will properties adjoining to privacy of loss and overlooking potential purposes, out / sitting amenity for accessible be to are roofs green Where maintenance. for areas these to access need the and features of these incorporation any and the walls roof to blank enable of the givendesign to be to the needs consideration Careful summer. in abuilding to cool help can which shade provide plants Climbing winter months. during chill wind reduce can and insulation provide plants evergreen birds, climbing for sites nesting provides foliage Dense bats. and birds for source food a and habitats useful They provide both vegetation. with wallcovered is the that so up astructure climb to encouraged and apot or ground the in wall or the within into material directly have planted either been plants to walls, where attached grow. plants to and help structures walls are wildlife Green encourage to material with covered and waterproof to be constructed and designed specially are roofs Green of flooding. risk the to reduce helping rate water of rain the run-off, down /slow store and habitats create walls can living or roofs Green Green Roofs Walls Living and 10.0 Secured by Design Secured document, comprehensive the published has Office Home The Consent may be required. Building Listed buildings. listed on devices security installing when needed is care Particular sightlines. poor and recesses of hidden creation the limit and areas parking and routes of access overlooking to provide opportunities maximise should Alterations factors. risk crime local to the proportionate and effective, be of ownership), asense should with measures together these and (such surveillance natural asproviding environments towards secure and safe contribute they how positively must developments demonstrate All crime. reduces that design to encourage obliged is S17 Council Under the Act, &Disorder Crime of the • • • • • • • • • Design for Security Design Fit laminated glass to side lights of doors and accessible windows which are not overlooked which windows and accessible Fit toof laminated lights glass doors side Standards Security British meet and fitted securely are Ensure locks all that pollution light unnecessary to avoid devices timing suitable with located be should Movement lighting sensitive points access front/rear/side to dusk to dawn lighting lowenergy fitting Consider areas private and over views parking to maximise positioned be should anew in extension Windows intoproperty the toaccess gain aids climbing theythat notprovide do so designed be should balconies and roofs flat low stores, fuel walls, and bin Boundary lockable be should entrances Side rear at the security of 1.8m good fences wallsprovide and High over to see enough low (no be 1metre) should than Front higher enclosures Design forSecurity . 41 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 42

Supplementary Planning Guidance - Residential Extensions and Alterations 11.0 requiring specialistadvice Are thereanyimplicationsfor Tree PreservationOrdersorprotectedspecies, advice? Is yourpropertyaListedBuildingorinconservationarearequiringspecialist Is aDesignand Access Statementrequired? Have youdiscussedtheproposalwithneighbours? Are yourproposalsaffected bytherequirementsofPartyWall etc. Act 1996? made tothecouncil? Do yourproposalsalsorequireaseparateBuildingRegulationapplicationtobe Have anychangestoaccessand/orparkingbeenagreedwiththecouncil? Have measuresbeentakentoreducecrime? Does thedesigntakeaccountofopportunitiesforresourceefficiency? Does theproposalresultinanadequateprovisionofamenityspace? overshadowing andprivacy? Does thedesignavoidharmfulimpactonyourneighboursintermsoflosslight, Does thedesignaddresscharacterofpropertyandsurroundingstreet? ? Householder Design Checklist Design Householder Householder DesignChecklist 12.0 number and nature of any objections and/or representations in support of the policy. of the support in representations and/or natureof any and number objections the and plans, adopted with anyconflict of degree the preparation, plan of stage the on depends UDPs emerging in to policies Generally, weight deposit. attached to on be the placed has been as LDP an time such until decisions development in control it may aconsideration remain deposit put on has been a UDP where that indicates of LDPs respect in Government by Welsh the issued Assembly Guidance Development Plan (LDP).Local of a preparation commence and UDP Cardiff of the preparation to cease Assembly of the agreement the sought has Council developmentthe on planning, Government Welsh the Assembly from guidance up-dated subsequent and 2004 in Directive Assessment) Environmental (Strategic SEA European the of introduction Following 2003. October in deposit on Development Plan was placed Unitary Cardiff The Plan Development Unitary Cardiff The area.’ of the quality aesthetic the affect not adversely does and environment surrounding of the character and scale to the regard proper has which ‘All design of good be new development should 1996), states: which Plan (Adopted January Local 11 Policy of Cardiff supplements City of Quality) the guidance Aesthetic and draft (Design This Plan Local Cardiff of City website wales.gov.uk the available is from Guide A Householder (see B Appendix permission. planning for to apply need the without homes greater to flexibility toenable householders make awiderrange ofimprovements and alterations to their including: development rights to permitted of changes a number introduces order The 2013 Order (Wales) (Amendment) Development) Permitted (General Town Country and character. and context local to their respond successfully of development that forms ofsustainable development, but achieving appearance physical the about not just is design Good well-being. and inclusion social inward investment promoting and attracting development, sustainable delivering environment, the play newenhancing in development can design Wales Policy Planning Technical and (TAN) Note good that Advice role the 12: acknowledge Design Planning Policy Wales framework: policy planning the throughout encouraged is design building quality High decisions. planning in consideration planning asamaterial may and taken be into account guidance policy planning national and development policies plan with consistent must be SPG areas. or circumstances particular in applied be will development policies way plan the on which in guidance set detailed out (SPG) guidance planning to of use supplementary the supports Government WelshThe Assembly Policy Context A: Policy Appendix ) Appendices 43 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 44 Supplementary Planning Guidance - Residential Extensions and Alterations policies. above to the proposed objecting at were made deposit, Representations All development will be required good design by: to demonstrate states: UDP (GoodDesign) Cardiff deposited of 2.20 Policy the development all in sought be will design Good states: UDP 1BPolicy Design) Cardiff deposited of (AchievingGood the e) d) c) b) a)

and landscaping detailing height, massing, scale, density, layout, of issues addressing Satisfactorily requirements; and changing to adaptability and resources of use efficient the for Providing it; visit or use might who everyone for environment accessible and asafe Providing public realm; the and spaces adjoining to well relates which development alegible Achieving responding and to context; character Satisfactorily local [email protected] Crossovers Vehicle [email protected] DevelopmentSustainable [email protected] Hoardings and Scaffolding Skips, [email protected] &Drains Sewers [email protected] Trees Hedgerows and [email protected] Plan) Development (Local LDP [email protected] Buildings Historic and Conservation [email protected] Biodiversity [email protected] Regulations Building Building Control [email protected] discussions Pre-Application Permission, Planning Development Management above. listed considerations statutory on advice boundaries, area of conservation to download maps advice, Control Building advice, Planning www.cardiff.gov.uk form Contact Tel.: (Cymraeg) 2088 2087 029 Tel.: 2087 2087 029 to Cardiff Connect Appendix B: Contacts Appendix 45 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 46 Supplementary Planning Guidance - Residential Extensions and Alterations www.architecture.com Architects Royal of Institute British RIBA www.aabc-register.co.uk Conservation Building in Accredited Register of Architects AABC www.ihbc.org.uk Conservation Building of Institute Historic The IHBC www.planningportal.gov.uk corner.) hand right the top in flag the for site –check Welsh you the ensure view (Please resource. regulations building and planning Government’s online The Portal Planning www.securedbydesign.com by Design Secured www.rtpi.org.uk Royal Town Planning Institute RTPI Wales in of Architects Royal Society RSAW www.rics.org/wales Surveyors Royal of Institute Chartered RICS Wales www.fpws.org.uk by wall area surveyors party provides Wall Surveyors of Party Faculty Walls Party www.naturalresourceswales.gov.uk Floodrisk, protected species etc. Wales Resources Natural www.HSE.gov.uk Executive &Safety Health www.dcfw.org Wales for Commission Design DCFW www.ciat.org.uk Technologists of Institute Architectural Chartered CIAT [email protected] www.cadw.wales.gov.uk service environment Government’s historic WelshThe Assembly Cadw Window Dormer Curtilage Context Area Conservation Conditions Cill (Sill) LineBuilding Bay Bargeboard 4 Direction Article Space Amenity Amenity Arboricultural

Appendix C: Glossary Appendix

A small window, projecting beyond the plane of the existing roof slope. existing roof of the beyond plane window, the A small projecting and garden areas. standing hard to, a house.Includes belonging and around, land The side). or (front, rear seen be can a building which from area the ofusually abuilding, surroundings or setting The enhance. and to preserve desirable is appearance and character Areas) whose 1990, Act Planning& Conservation (Listedthe Buildings under interest designated historic or architectural of special area An consent. planning its in specified development, or aproperty on placed restrictions or Requirements frame. door or of base awindow at the ledge horizontal The astreet. along of buildings by frontages the formed line The line. building of the elevation, main ofset the forward element A protruding for decorative effect. carved sometimes gable, of a edge outer the to fitted piece A timber area. aconservation within usually area, identified an within to aproperty development rights permitted removes specified Development) which 1995, Order Permitted Town 4of the (General Planning Country and Article under A direction terraces. roof and balconies asgardens, such space of open Areas etc. architecture landscaping, –trees, area of the overall to the character contribution positive make a Factorswhich of enjoyed life by quality occupants. The toRelating trees.

47 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 48 Supplementary Planning Guidance - Residential Extensions and Alterations Eaves Roof Hipped Highway Habitable Room Roof Gable Fenestration Features Elevation

A roof that slopes down to each of the eaves of the House. to of each down the slopes that A roof by public) used be the can (which bridleways. and (adopted to vehicles open Any not) road or aswell asany footpath definition. this excluded are from facilities dining no with kitchens or rooms hallways, utility corridors, toilet facilities, or Bath purpose. eating or living cooking, sleeping, for used Any room roof. of ofaridged wallend at the section triangular generally The aproperty. on windows of the arrangement and style The building unique character. give and the distinctive are that treatments edge and corner used, materials aswindows, of such it aspects to buildings; the relation In them. in inserted features and building walls of the back or side front, The roofline. the wall ofmeets top the the at point which The ‘Principal’ Elevation Pointing Plinth Plan Development Permitted Wall Party Parking Off-street Main Windows Building Listed

the main entrance to the house. to the entrance main the serving aporch bay asmain or such windows features architectural main the contain will house.It the highway main the serving (directly at anangle) or faces which house of the front the Usually awall.in blocks or stone bricks between jointing the to finish mortar visible The column. or to base awall, or pedestal support A visible proposed. are that those existing and already buildings the show should plan site boundary, the the Within they if relevant are design. to the site, structures to nearby the and of access means and boundaries property show should plan The Government. Welsh Assembly butby the authority notby granted local the permission planning ageneral from They derive rights. Development’ ‘Permitted called are These permission. planning for to apply needing without to your property changes of minor You types make certain can in separate buildings ownership/occupation. separate two to butused ownership one in land on entirely stands or properties more or two between boundary the straddles that fence A wall or parking. highway car for of use the the reduces which land private on provided parking Car rooms. dining living and including of adwelling, ofrooms into light living main source primary The in Wales. listing for buildings designating for responsible is Cadw highest. the 1being 1, grade grade are 2with or 2* Listedbuildings interest. historic or architectural of special A building 49 SupplementaryDesign Planning Guidance Guidance For -Infill Residential Sites Extensions Supplementary and Alterations Planning Guidance 50 Supplementary Planning Guidance - Residential Extensions and Alterations Splay Visibility Valley Element Thermal Surveillance course String / Streetscape Scene Street Skylight Sightlines Roughcast Roof Pitch Light Roof Ridge Tile Ridge Line Render Quoins

A continuous layer of building material, such as brick or tile, on awall on tile, or layerasbrick such material, of building A continuous that a sightline can be taken across the land. the taken be across can asightline that order in restricted is of any height the object which on of land area An flows. water towards of which aroof surfaces sloping of two intersection The space. conditioned lesser or unconditioned an or environment external the from building the of part conditioned thermally a separates which roof or Wall, floor traffic/pedestrians. aspassing such activity other or doors windows, by overlooking observed easily be can which area An of abuilding. roof or Everything that can be seen along a street from any given from astreet point. along seen be can that Everything point. access or ahighway junction atalong aroad or taken be Can ofvehicle. amotor adriver for of vision lines Direct A rough textured render. ridgeline. wall to of top the the the from slopes roof the at which angle The slope. roof into,the with, laying and flush inserted A window apexto roof.of fitted tile Half-round meet. slopes the except chimneys, roof where of the point the for highest the Generally painted. often and textured sometimes cement/lime/sand, of wall finish External brickwork. of colours different of or stone by blocks larger emphasised often is quoin the buildings traditional In opening. door or at awindow also wall of abuilding; side and front the between formed junction The A horizontal glazed opening set in a flat roof. set in a sloping roof.roof. set inaflat set sloping opening ina glazed A horizontal

Document Prepared by Strategic Planning, City Developement, Cardiff Council