Homeowner's Guide to Permits (PDF)

Rushern L. Baker, III County Executive

Department of Permitting, Inspections and Enforcement 9400 Peppercorn Place, 1st Floor Largo, Maryland 20774 2013 Prince George’s County complies with the Americans with Disabilities Act (ADA) of 1990. If you have any questions regarding ADA or if assistance is needed in obtaining permit processing services, you should contact the Permits Administration Office at (301) 883–5776. Concrete Masonry Wall with Table of Contents Block Foundation for Additional Living Space Page

235# Min. Roofing (Use Roll Roofing When Pitch Is Less than 3/12) 15# Felt (2 Layers When Introduction...... 1 Pitch Is Less than 4/12)

3/8² Min. (PS70) CD Plywood (with Clips When Framing 24² O.C.) When Is a Permit Required?...... 3 Use Gable Vent at Each End Rafters or Ridge Vent or Soffit Vent Gutter, Downspout, Splash Block Fences ...... 9 Optional Manufactured Trusses at 24² O.C.

Ceiling Joists Privacy Walls ...... 10

R19 Faced Batt or R19 Blown with 6 Mil Vapor Barrier 7¢6² Minimum Ceiling Height Retaining Walls...... 11 Optional Soffit Exterior 1/2² Anchor Bolts at Corners and Every 8¢ O.C. Extending Plywood or Other 15² into Masonry: 2´ Plate on 4² Solid Masonry Approved Material 3/4² Furring Strips with 3/4² Urethane Foam or 1 1/2² Furring Strips with R7 Batts (Omit Insulation and Interior Finish if Unheated) Patios and Decks ...... 13

1/2² Gypsum Board Stoops and Porches ...... 18 8² CMU or 4² Brick and 4² Block

Felt

Joint Reinforcement at 16² Vertical Sheds...... 20

4² 2500 psi Concrete Gazebos...... 21 6 ´ 6M #10 WWM Grade 6 Mil Polyethylene Garages ...... 22 Vapor Barrier with 1² ´ 24² Foam Insulation 6² Laps

30² Min. Gravel Fill Vegetation Free, Compacted Carports...... 23 to 90% Sub-Grade 8² Min. Plumbing Work by Homeowners...... 24 2500 psi Concrete 16²

Additions and Alterations...... 25

12 been prepared to provide 4 min. Roof Shingles preliminary information 1/2O C-D Exterior Plywood Clearance and instructions 2O Roof Sheathing Building Paper regarding a number Rafters Drip Cap of common home improvement projects. TOP OF PLATE The enclosed guidelines Ceiling Joists will enable homeowners R38 Insulation 1O x __ Fascia 1/2O Drywall and their contractors to understand Vented Soffit Hurricane Tie the permit process and how it applies to their Foundation Note: Double Top Plate specific project. 1) Minimum compressive strength of concrete shall be 2500 psi. Inside you will find information on requirements R15 Insulation that must be fulfilled prior to the issuance of permits. – 0 1/2 O Vapor Retarder 8 N Additional requirements apply to projects located 1/2O Drywall Siding in the Chesapeake Bay Critical Area and/or for 1/2O f Anchor Bolts @ Building Paper 32O O.C. 1/2O C-D Exterior Sheathing historic structures or properties. Applicable codes 1/2O Exp. Joint Bond Break 2x4 Studs @ 16O O.C. and general details are provided in each section.

4O Concrete Slab By learning which sections of the Prince George’s on Grade O O O O County Code apply to a proposed project, applicants 6 x 6 –1.4 x 1.4 Wwf Pressure Treated Plate (Wire Mesh) TOP OF SLAB can prepare their plans accordingly, thereby Horizontal Reinforcements Min. reducing delays and increasing the cost efficiency Every Second Course GRADE 8 O of their project. 6 Mil. Vapor Barrier 4O Washed 8O Cmu Gravel Any questions pertaining to the professional R6 Perimeter Minimum standing of a specific Home Improvement Contractor

Insulation 30 O 20Ox10O Conc. Footing w/ 2 #4 Cont. & #3 Ties @ 32O O.C. should be directed to the Maryland Home Improvement Commission (MHIC) at (410) 230–6309 or their Undisturbed Soil

Min. 3OMin. Cover 3 O Cover web site at www.dllr.state.md.us.

Information about plumbing and gasfitting permit requirements issued by the Washington Suburban Sanitary Commission (WSSC) may be WARNING AND DISCLAIMER obtained by calling (301) 206– 4003. This drawing is intended only to be illustrative of the minimum requirements of applicable County Ordinances. Code changes may not appear in this illustration. It is not a blueprint, nor a set of plans and specifications. PRINCE GEORGE’S COUNTY, MARYLAND DOES NOT WARRANT OR GUARANTEE IN ANY MANNER OR TO ANY EXTENT THE SUFFICIENCY OF THIS DRAWING. Persons to whom this drawing is distributed should If your home is currently served by a not rely on it as an acceptable plan or blueprint for any structure. PRINCE GEORGE’S COUNTY, MARYLAND DISCLAIMS ANY AND ALL LIABILITY FOR DAMAGES OR INJURIES, DIRECT OR CONSEQUENTIAL, well and/or septic system and you wish ARISING OUT OF THE USE OF THIS DRAWING. to construct additional living space or a detached structure, you will need Health Department Wall Section approval of your building permit. You will need to Crawl Space know the size and location of your septic system and/or well. 12 Roof Shingles 4 min. If you have any questions regarding your 1/2O C-D Exterior Plywood Roof Sheathing property or Health Department requirements, contact Clearance 2O Building Paper the Water Quality and Septic Systems Program at Rafters Drip Cap Gutter w/Downspout (301) 883–7680. Remember, you will need to protect & Splashblock your investment in these systems by providing access TOP OF PLATE for construction equipment that prevents travel over Ceiling Joists any part of your septic system or near your well. R38 Insulation 1O x __ Fascia 1/2O Drywall Vented Soffit This guide will assist you in obtaining permits for Foundation Notes: Hurricane Tie 1) Minimum compressive strength of concrete Double Top Plate your home improvements. If you have any questions shall be 2500 psi. 2) Provide one 8O x 16O vent louvre for every or comments, please call the Permits and Information 70 square feet of crawl space area. Locate Management Section at (301) 883–5776. one vent within 3 feet of each corner. 3) Provide crawl space access (minimum 24O wide by 18O high). – 0 1/2 O 8 N R15 Insulation Vapor Retarder Siding 1/2O Drywall Building Paper 1/2O f Anchor Bolts @ 1/2O C-D Exterior Sheathing 32O O.C. 2 x4 Studs @ 16O O.C. 3/4O T&G Plywood Screwed and Glued 2 x Pressure Treated Plate TOP OF SUBFLOOR

Floor Joists

Insulation (R19 Min.; Horizontal Reinforcements R30 Preferred) Every Second Course Min. GRADE 8 O Minimum Proposed Crawl Space 18 O

8O Cmu or Concrete Minimum Min. 20Ox10O Conc. Footing w/ 2 30 O Cover 3 O #4 Cont. & #3 Ties @ 32O O.C.

Undisturbed Soil 3OMin. Cover

WARNING AND DISCLAIMER This drawing is intended only to be illustrative of the minimum requirements of applicable County Ordinances. Code changes may not appear in this illustration. It is not a blueprint, nor a set of plans and specifications. PRINCE GEORGE’S COUNTY, MARYLAND DOES NOT WARRANT OR GUARANTEE IN ANY MANNER OR TO ANY EXTENT THE SUFFICIENCY OF THIS DRAWING. Persons to whom this drawing is distributed should not rely on it as an acceptable plan or blueprint for any structure. PRINCE GEORGE’S COUNTY, MARYLAND DISCLAIMS ANY AND ALL LIABILITY FOR DAMAGES OR INJURIES, DIRECT OR CONSEQUENTIAL, ARISING OUT OF THE USE OF THIS DRAWING. Additionally, the Health Department’s Division When Is a Permit Required? of Environmental Health will check to ensure that the existing septic system is sized adequately for any proposed increase to living area(s), Project Categories where applicable. The projects listed in this booklet are grouped into Like electrical work, the four general categories: installation of plumbing or natural gas piping requires an 1. Accessory Buildings (includes sheds); application by a Registered 2. Home Improvement and Repair Projects; Master Plumber/Gasfitter licensed by WSSC. Generally, the installation 3. Appliance Installations (includes replacements); of plumbing by homeowners is not and permitted. Installation of natural 4. Miscellaneous. gas piping and appliances by other than Registered Master Gasfitters is strictly prohibited. Type of Permit and Symbols For sprinklered homes, all additions (including sunrooms and patio enclosures) must also be The symbols listed below appear in the protected by an automatic sprinkler system in permit/plans column to indicate the type of permit accordance with NFPA 13D. required. The symbols denote: In accordance with Prince George’s County B — Building Permit Building Code, Subtitle 4, Section 4-245(c), E — Electrical Permit “Structures that undergo a complete demolition (exclusive of the foundation) due to lack of M — Mechanical Permit maintenance, fire, explosion or natural causes of the P — Plumbing and Gasfitting Permit Issued structure and additions to structures which exceed by Washington Suburban Sanitary one hundred (100) percent of the total floor area Commission (WSSC) (square footage) of the existing structure, shall be required to be fully sprinklered.” G — Grading Permit N — No Permit or Plans Required The following pages provide standard details for additional living space constructed onto existing Y — Plans Required dwellings.

Living areas can often be altered or created through renovations to an existing structure without the benefit of outward physical expansion. For example, a basement can be finished as a family recreation room and/or den, or it can be divided and partitioned to create an additional bedroom.

In order to perform new construction or to alter an existing structure, you must obtain a building permit and submit site plans showing existing and proposed structure location(s), including well and/or septic (if applicable). Structural plans are also required.

Electrical work for additions will require an application for an electrical permit by a Master Electrician licensed with Prince George’s County.

Electrical work for alterations of existing dwellings will require an application for an electrical * Electrical and Mechanical Contractors License required to permit by a Master Electrician licensed with obtain electrical and mechanical trade permits. Prince George’s County. Plumbing Work by Homeowners Home Improvement 2. and Repair Projects Permit Plans Persons who own an existing single family dwelling or conventional townhouse unit are allowed, by Install exterior siding N N regulation, to perform certain plumbing work without Replace roof shingles a permit. Homeowners may also perform certain (no structural repair involved) N N plumbing work that requires a plumbing permit, subject to specific limitations. Generally, permits Replace roof sheathing B Y are not required for the replacement of existing Panel interior walls without partitions N N plumbing fixtures, except water heaters, and testable backflow devices. Put up partitions and finish rec room (electric/plumbing, separate permits required) B Y The following plumbing work may require a permit: Exact window and/or door replacement (no structural alteration) N N a) Water, drainage and vent piping above grade that will not be concealed; Install pre-fabricated fireplace B Y Build masonry chimneys for stove B Y b) First time installation of plumbing fixtures on new or existing Build masonry fireplace B Y rough-ins; and Construct entrance way/area way into basement B Y c) Installation of non-testable double check valve backflow devices. Construct, dig or enlarge a basement under existing dwelling B Y d) Gasfitting; Driveways and paving B Y e) Installation or replacement of water heaters; Foundation waterproofing B Y f ) Installation of water piping and meter rack Build patio less than 500 square feet associated with WSSC meter settings; on grade (no steps; cannot be used to park vehicles) N N g) Replacement or repair of water or sewer services; Build above-grade patio B Y and Build patio covers B Y h) Any other work not specifically allowed by WSSC regulation. Replace or install carpeting N N Painting N N Any questions regarding plumbing work by homeowners should be referred to the WSSC Replace or install kitchen Service Applications and Records Section counter or bathroom counter N N at (301) 206–4003. Home Improvement Carports 2. and Repair Projects (cont’d) Permit Plans With the exception of a roof cover, carports are Replace interior or exterior door N N generally exposed to the elements much like a lean-to structure. The front, back and sides may be left open Enclose carport B Y or screened with latticework for improved aesthetics. Build or replace porch or deck B Y All carports must have permanent foundations.

If you are located in a subdivision with a Homeowner’s Association (HOA), a separate approval from the HOA may be necessary. Unless erected by the homeowner, all home * Electrical and Mechanical Contractors License required to improvement projects require a contractor who is licensed obtain electrical and mechanical trade permits. with the Maryland Home Improvement Commission. ** Cord and plug connection does not require permit. Gazebos 4. Miscellaneous Permit Plans Gazebos are Build retaining walls (over 2 feet high) B Y generally covered, deck-type leisure structures which are Build brick or block privacy wall (over 4 feet high) B Y detached from the principal structure. Install hot tub/spa/pool B, E* Y As with sheds, gazebos with floor Construct fences plans measuring less (over 4 feet high/6 feet limit) B Y than 150 square feet can be placed on Install outdoor gas barbecue (if timber skids but must served by Washington Gas Light Co.) P N be properly anchored to provide stability Install swimming pool (if connected to WSSC, permit required) B, E* Y and reduce susceptibility to overturning. Gazebos exceeding the aforementioned limitations will require Install solar heating system M, B, E* N a permanent foundation. To erect a gazebo of any size, you must obtain a building permit and submit Erect freestanding radio or site plans showing existing and proposed structure TV antenna or satellite dish location(s), including well and/or septic (if applicable). 18 inches or more in diameter B, E* Y Structural plans are also required.

Demolish building (RAZE Permit) B, P** N Electrical work for gazebos will require an application for an electrical permit by a Master Electrician licensed with Prince George’s County.

Sheds are primarily used for secondary storage Fences are constructed for a variety of reasons. and as small workshops. They are closed off and They are generally used to restrict the movement of protected from the elements and generally can be people and animals into or out of a parcel of land. secured to prevent access. Residential-use sheds Often they are placed with floor plans less than 150 square feet can be to denote boundaries, placed on timber skids but must be properly delineate specific-use anchored to provide areas, provide privacy stability and reduce or for aesthetic reasons. susceptibility to Common fence types are overturning. No building split rail, picket, board permit or plans are on board or chain link. required, and only one shed per lot is Fences may not be placed so as to encroach allowed without a permit. on easements of any kind or on State or County rights-of-way. If you are on a corner lot, you may To erect a shed that is greater than 150 square not locate a fence within 25 feet of the point of feet requires a permanent foundation. You must intersection on your property lines that abut obtain a building permit and submit site plans the streets. showing existing and proposed structure location(s), including well and/or septic (if applicable). Structural To place a fence over four plans are also required. feet high on your lot, you must apply for a building permit Electrical work for sheds and submit site plans showing will require an application proposed fence location(s) for an electrical permit by a including well and/or septic Master Electrician licensed (if applicable). Structural with Prince George’s County. plans may be required for fence erections.

Privacy walls used for fencing are usually constructed of brick, block, stone or concrete.

36² When planning 4² Max. Spacing the construction or installation of a privacy wall, it is very important to 4²´ 4² consider existing drainage patterns 2²´ 12² Stringer on your lot. You must not alter the drainage patterns. 2²´ 8² Closed Riser This includes rainfall run-off that originates on your property and flows through your lot from adjacent properties. Grades on either side of the wall must remain as they were prior to construction.

To construct a privacy wall of over four feet high, you must 36² apply for a building permit and submit site plans showing existing and proposed structure location(s) including well and/or septic Rails 4² Max. if over 30² above (if applicable). Floor or Grade Structural plans must also be submitted. Privacy Max. Riser Height 8 1/4² Min. Tread Depth 9² walls have the same set-back requirements as fences according to the zoning and existence of private well

and/or septic systems. Notes: 1) The greatest riser height within any flight of stairs shall not exceed the smallest by more than 3/8 inch. The greatest tread run within any flight of stairs shall not exceed the smallest by more than 3/8 inch. 2) When risers are closed, all treads may have a uniform projection not to exceed 1 1/2 inches.

If you are located in a subdivision with a Homeowner’s WARNING AND DISCLAIMER This drawing is intended only to be illustrative of the minimum requirements of applicable County Ordinances. Association (HOA), a separate approval from the HOA may Code changes may not appear in this illustration. It is not a blueprint, nor a set of plans and specifications. be necessary. Unless erected by the homeowner, all home PRINCE GEORGE’S COUNTY, MARYLAND DOES NOT WARRANT OR GUARANTEE IN ANY MANNER OR TO ANY EXTENT THE SUFFICIENCY OF THIS DRAWING. Persons to whom this drawing is distributed should improvement projects require a contractor who is licensed not rely on it as an acceptable plan or blueprint for any structure. PRINCE GEORGE’S COUNTY, MARYLAND with the Maryland Home Improvement Commission. DISCLAIMS ANY AND ALL LIABILITY FOR DAMAGES OR INJURIES, DIRECT OR CONSEQUENTIAL, ARISING OUT OF THE USE OF THIS DRAWING. Stoops and Porches Retaining Walls

Stoops and porches Retaining walls are usually constructed on differ from patios and decks sloping parcels of land that are presently eroding in that they are usually a or in areas that will be means of gaining access cut (excavated) or filled to an elevated point of in order to create more entrance to a structure usable space. Retaining (i.e., a back door that is walls are customarily above grade). Stoops are built from railroad ties, usually built of brick, brick, block, stone or block, stone or concrete. concrete. Railroad tie All stoops over eight inches retaining walls are the in height will require a most popular due to the building permit. lower construction costs.

Existing rainfall drainage patterns If you intend to are a major concern construct a stoop or porch, when planning with the exception of the to construct a at-grade masonry stoop retaining wall since mentioned above, you those patterns may must apply for a building be permanently permit. To apply, submit altered by the structural plans and site structure(s) and plans showing existing the accompanying and proposed structure earthwork. location(s), including well Run-off that originates on your property or flows and/or septic (if applicable). through your lot from adjacent properties must be adequately conveyed to a proper outfall to prevent any damage or nuisance to your neighbors. Additionally, groundwater movement must be addressed with If you are located in a subdivision with a Homeowner’s the installation of weep Association (HOA), a separate approval from the HOA may holes and/or drain tile be necessary. Unless erected by the homeowner, all home behind the wall. improvement projects require a contractor who is licensed with the Maryland Home Improvement Commission. To construct a retaining wall or series of walls Covered Sundeck that will have a total height of greater than two feet, you must apply for a building permit and submit site 235# Roofing (Use Roll Roofing plans showing existing and proposed construction When Pitch Is Less than 3/12) 15# Felt (2 Layers When Use Gable Vent on Each End location(s), including well and/or septic. Structural Pitch Is Less than 4/12) or Ridge Vent or Soffit Vent plans must also be submitted. Retaining walls have 3/8² Min. (PS-70) Rafters the same set-back requirements as fences according CD Plywood with Clips to lot zoning. When Framing 24² O.C. Optional Use of Manufactured Trusses at 24² O.C.

Ceiling Joist

R19 Faced Batt or R19 Blown with 6 Mil Vapor Barrier Gutter, Downspout, 7¢6² Minimum Splash Block Ceiling Height

1/2² Gypsum Board or 1/4² Wood Paneling Optional Soffit Exterior Plywood or Other 6² Stud at 24² O.C. with R19 Faced Batt Insulation Approved Material OR 4² Stud at 16² O.C. with R11 Faced Batt Insulation

Siding 12² Anchor Bolt or Straps at Corners and Every 8² Sheathing O.C. Extending 8² into Concrete and 15² into Masonry

Pressure-Treated Plate on Concrete Typical Mastic Seal or Fiberglass Sill Sealer Existing House

1/2² ´ 5² 2 ´ __ Joist __ O.C. Lag Screws Max. 36² O.C. 2 ´ __ Ledger

Two 2 ´ __ Split Beam Fastened with Two 1/2² Bolts

Post

Grade Grade Grade

Concrete Footing 30² Min.

16² If you are located in a subdivision with a Homeowner’s WARNING AND DISCLAIMER This drawing is intended only to be illustrative of the minimum requirements of applicable County Ordinances. Association (HOA), a separate approval from the HOA may Code changes may not appear in this illustration. It is not a blueprint, nor a set of plans and specifications. be necessary. Unless erected by the homeowner, all home PRINCE GEORGE’S COUNTY, MARYLAND DOES NOT WARRANT OR GUARANTEE IN ANY MANNER OR TO ANY EXTENT THE SUFFICIENCY OF THIS DRAWING. Persons to whom this drawing is distributed should improvement projects require a contractor who is licensed not rely on it as an acceptable plan or blueprint for any structure. PRINCE GEORGE’S COUNTY, MARYLAND with the Maryland Home Improvement Commission. DISCLAIMS ANY AND ALL LIABILITY FOR DAMAGES OR INJURIES, DIRECT OR CONSEQUENTIAL, ARISING OUT OF THE USE OF THIS DRAWING. Wood Deck Framing/Foundation Plan Patios and Decks

Framing/Foundation Plan Patios and decks Scale: 1/4² = 1¢ – 0² are similar in that they are both open-air

Post Post Post leisure areas. These C C C L L L structures are generally Existing House differentiated from one another based upon construction materials. g 2 – 2 ´__ Beam Those built from brick,

Post block, stone or concrete (masonry) are classified as patios and those built from lumber are designated as decks.

Patios are usually built at grade with a finished height that does not

f exceed six inches. For construction of patios built at existing grade Overall Deck Size Joists O.C. (and less than 500 square feet), __ ´ @ 16 ² 2 no permits are required for their construction. If your lot is served by a private well and/or septic, an at-grade patio must be

C Post 2 – 2 ´__ Beam reviewed by the Quality and e Septic Systems Program to ensure that access for septic tank maintenance is provided. a b c d Overall Deck Size Decks are generally

Notes: elevated structures. 1) All lumber shall be pressure treated. A building permit is 2) All connectors, anchors and fasteners shall be either ZMAX™ or post batch, hot-dip galvanized steel. required for construction 3) Do not use standard carbon–steel or aluminum products in direct contact with pressure-treated wood. of decks. Decks near septic systems should be designed so that WARNING AND DISCLAIMER footers or other This drawing is intended only to be illustrative of the minimum requirements of applicable County Ordinances. Code changes may not appear in this illustration. It is not a blueprint, nor a set of plans and specifications. support structures PRINCE GEORGE’S COUNTY, MARYLAND DOES NOT WARRANT OR GUARANTEE IN ANY MANNER OR do not damage septic system plumbing or prevent TO ANY EXTENT THE SUFFICIENCY OF THIS DRAWING. Persons to whom this drawing is distributed should not rely on it as an acceptable plan or blueprint for any structure. PRINCE GEORGE’S COUNTY, MARYLAND pumping access to septic tank cleanouts. DISCLAIMS ANY AND ALL LIABILITY FOR DAMAGES OR INJURIES, DIRECT OR CONSEQUENTIAL, ARISING OUT OF THE USE OF THIS DRAWING. If you intend to construct a Wood Deck Elevations patio or deck, you must apply for a building permit and submit site Front Elevation plans showing the existing and Scale: 1/4² = 1¢ – 0² proposed structure location(s), Rail Rail Post Post including well and/or septic CL CL

(if applicable). Structural plans 5¢– 0² Maximum are also required. 4² Maximum Spacing Opening

Minimum Height 36 ² ²

45° 1/3 1 (Length)

Left Side Elevation Scale: 1/4² = 1¢ – 0²

Rail Rail Post Post CL CL 5¢– 0² Maximum 4² Maximum Spacing Opening

Minimum Height 36 ² ²

1/3 45° 1 (Length) If you are located in a subdivision with a Homeowner’s Association (HOA), a separate approval from the HOA may be necessary. Unless erected by the homeowner, all home improvement projects require a contractor who is licensed with the Maryland Home Improvement Commission. If you intend to construct a Wood Deck Elevations patio or deck, you must apply for a building permit and submit site Front Elevation plans showing the existing and Scale: 1/4² = 1¢ – 0² proposed structure location(s), Rail Rail Post Post including well and/or septic CL CL

(if applicable). Structural plans 5¢– 0² Maximum are also required. 4² Maximum Spacing Opening

Minimum Height 36 ² ²

45° 1/3 1 (Length)

Left Side Elevation Scale: 1/4² = 1¢ – 0²

Rail Rail Post Post CL CL 5¢– 0² Maximum 4² Maximum Spacing Opening

Minimum Height 36 ² ²

Framing/Foundation Plan Patios and decks Scale: 1/4² = 1¢ – 0² are similar in that they are both open-air

Post Post Post leisure areas. These C C C L L L structures are generally Existing House differentiated from one another based upon construction materials. g 2 – 2 ´__ Beam Those built from brick,

Post block, stone or concrete (masonry) are classified as patios and those built from lumber are designated as decks.

Patios are usually built at grade with a finished height that does not

C Post 2 – 2 ´__ Beam reviewed by the Quality and e Septic Systems Program to ensure that access for septic tank maintenance is provided. a b c d Overall Deck Size Decks are generally

Notes: elevated structures. 1) All lumber shall be pressure treated. A building permit is 2) All connectors, anchors and fasteners shall be either ZMAX™ or post batch, hot-dip galvanized steel. required for construction 3) Do not use standard carbon–steel or aluminum products in direct contact with pressure-treated wood. of decks over eight inches in height. Decks near septic WARNING AND DISCLAIMER systems should be This drawing is intended only to be illustrative of the minimum requirements of applicable County Ordinances. Code changes may not appear in this illustration. It is not a blueprint, nor a set of plans and specifications. designed so that footers PRINCE GEORGE’S COUNTY, MARYLAND DOES NOT WARRANT OR GUARANTEE IN ANY MANNER OR or other support structures TO ANY EXTENT THE SUFFICIENCY OF THIS DRAWING. Persons to whom this drawing is distributed should not rely on it as an acceptable plan or blueprint for any structure. PRINCE GEORGE’S COUNTY, MARYLAND do not damage septic system plumbing or prevent DISCLAIMS ANY AND ALL LIABILITY FOR DAMAGES OR INJURIES, DIRECT OR CONSEQUENTIAL, ARISING OUT OF THE USE OF THIS DRAWING. pumping access to septic tank cleanouts. To construct a retaining wall or series of walls Covered Sundeck that will have a total height of greater than two feet, you must apply for a building permit and submit site 235# Roofing (Use Roll Roofing plans showing existing and proposed construction When Pitch Is Less than 3/12) 15# Felt (2 Layers When Use Gable Vent on Each End location(s), including well and/or septic. Structural Pitch Is Less than 4/12) or Ridge Vent or Soffit Vent plans must also be submitted. Retaining walls have 3/8² Min. (PS-70) Rafters the same set-back requirements as fences according CD Plywood with Clips to lot zoning. When Framing 24² O.C. Optional Use of Manufactured Trusses at 24² O.C.

Ceiling Joist

R19 Faced Batt or R19 Blown with 6 Mil Vapor Barrier Gutter, Downspout, 7¢6² Minimum Splash Block Ceiling Height

Siding 12² Anchor Bolt or Straps at Corners and Every 8² Sheathing O.C. Extending 8² into Concrete and 15² into Masonry

Pressure-Treated Plate on Concrete Typical Mastic Seal or Fiberglass Sill Sealer Existing House

1/2² ´ 5² 2 ´ __ Joist __ O.C. Lag Screws Max. 36² O.C. 2 ´ __ Ledger

Two 2 ´ __ Split Beam Fastened with Two 1/2² Bolts

Post

Grade Grade Grade

Concrete Footing 30² Min.

Privacy walls used for fencing are usually constructed of brick, block, stone or concrete.

If you are located in a subdivision with a Homeowner’s If you are located in a subdivision with a Homeowner’s Association (HOA), a separate approval from the HOA may Association (HOA), a separate approval from the HOA may be necessary. Unless erected by the homeowner, all home be necessary. Unless erected by the homeowner, all home improvement projects require a contractor who is licensed improvement projects require a contractor who is licensed with the Maryland Home Improvement Commission. with the Maryland Home Improvement Commission. Gazebos 4. Miscellaneous Permit Plans Gazebos are Build retaining walls (over 2 feet high) B Y generally covered, deck-type leisure structures which are Build brick or block privacy wall (over 4 feet high) B Y detached from the principal structure. Install hot tub/spa/pool B, E* Y As with sheds, gazebos with floor Construct fences plans measuring less (over 4 feet high/6 feet limit) B Y than 150 square feet can be placed on Install outdoor gas barbecue (if timber skids but must served by Washington Gas Light Co.) P N be properly anchored to provide stability Install swimming pool (if connected to WSSC, permit required) B, E* Y and reduce susceptibility to overturning. Gazebos exceeding the aforementioned limitations will require Install solar heating system M, B, E* N a permanent foundation. To erect a gazebo of any size, you must obtain a building permit and submit Erect freestanding radio or site plans showing existing and proposed structure TV antenna or satellite dish location(s), including well and/or septic (if applicable). 18 inches or more in diameter B, E* Y Structural plans are also required.

Demolish building (RAZE Permit) B, P** N Electrical work for gazebos will require an application for an electrical permit by a Master Electrician licensed with Prince George’s County.

If you are located in a subdivision with a Homeowner’s Association (HOA), a separate approval from the HOA may be necessary. Unless erected by the homeowner, all home * Electrical and Mechanical Contractors License required to obtain electrical and mechanical trade permits. improvement projects require a contractor who is licensed with the Maryland Home Improvement Commission. ** Requires disconnect letters from all utility companies. Garages Appliance 3. Installations Permit Plans Whether attached or detached, garages are usually self-contained in that they are closed off Install electric air conditioning** E, M* N from the elements and can be secured to prevent access. Regardless of the finished size, garages Install gas air conditioning M, P* N require permanent foundations. Install heat pump E, M* N The details and restrictions for garages discussed in this section also apply to the construction of Install well-water pump E* N covered or enclosed boat storage facilities on Install humidifier E* N residential lots. If you intend to construct one of these structures, Install boiler (gas, oil, etc.) E, M, P* N you must obtain a building permit and submit site plans showing Install portable cooling unit existing and proposed structure (i.e., window A/C)** N N location(s), including well and/or septic (if applicable). Structural Install electronic air cleaner E* N plans are also required. Install attic fan E* N If a garage requires changes to an existing driveway apron or the construction of a new Install oil furnace E, M* N driveway apron, a separate permit from the Prince George’s County Department of Public Install gas furnace E, M, P* N Works and Transportation must be obtained. Install electric furnace E* N The addition or extension of electrical wiring in attached garages will require an application for an electrical permit by a Master Electrician licensed with Prince George’s County.

Repair steps B Y The details and Relocate stairs B Y restrictions for carports discussed Pier B, G Y in this section are Bulkhead B, G Y also applicable to the construction Boathouse B Y of covered or enclosed boat Mooring pile B, G Y storage facilities Boat lift B Y on residential lots. If you intend to Build dormers B Y construct one of Install a hardwood or asphalt these structures, tile floor on a subfloor N N you must obtain a building permit and submit site plans showing existing and proposed structure Install kitchen cabinets N N location(s), including well and/or septic (if applicable). Replace switch plates N N Structural plans are also required. Replace electrical wiring E* N Electrical work for carports will require an application for an electrical permit by a Master Relocate switches, outlets, Electrician licensed with Prince George’s County. lighting fixtures, and sub panels E* N Relocate service entrance cable or change the size of service E* N Install smoke detectors (if connected to house wiring) E* N Replace circuit breakers E* N If you are located in a subdivision with a Homeowner’s Replace kitchen stove exhaust E* N Association (HOA), a separate approval from the HOA may be necessary. Unless erected by the homeowner, all home improvement projects require a contractor who is licensed * Electrical and Mechanical Contractors License required to with the Maryland Home Improvement Commission. obtain electrical and mechanical trade permits. Plumbing Work by Homeowners Home Improvement 2. and Repair Projects Permit Plans Persons who own an existing single family dwelling or conventional townhouse unit are allowed, by Install exterior siding N N regulation, to perform certain plumbing work without Replace roof shingles a permit. Homeowners may also perform certain (no structural repair involved) N N plumbing work that requires a plumbing permit, subject to specific limitations. Generally, permits Replace roof sheathing B Y are not required for the replacement of existing Panel interior walls without partitions N N plumbing fixtures, except water heaters, and testable backflow devices. Put up partitions and finish rec room (electric/plumbing, separate permits required) B Y The following plumbing work may require a permit: Exact window and/or door replacement (no structural alteration) N N a) Water, drainage and vent piping above grade that will not be concealed; Install pre-fabricated fireplace B Y Build masonry chimneys for stove B Y b) First time installation of plumbing fixtures on new or existing Build masonry fireplace B Y rough-ins; and Construct entrance way/area way into basement B Y c) Installation of non-testable double check valve backflow devices. Construct, dig or enlarge a basement under existing dwelling B Y d) Gasfitting; Driveways and paving B Y e) Installation or replacement of water heaters; Foundation waterproofing B Y f ) Installation of water piping and meter rack Build patio less than 500 square feet associated with WSSC meter settings; on grade (no steps; cannot be used to park vehicles) N N g) Replacement or repair of water or sewer services; Build above-grade patio B Y and Build patio covers B Y h) Any other work not specifically allowed by WSSC regulation. Replace or install carpeting N N Painting N N Any questions regarding plumbing work by homeowners should be referred to the WSSC Replace or install kitchen Service Applications and Records Section counter or bathroom counter N N at (301) 206–4003. Additions and Alterations 1. Accessory Buildings Permit Plans Addition and alteration construction is a Build shed that is more than miscellaneous grouping of home improvement 150 square feet B Y and renovation projects that are generally geared Build storage shed that is toward the enhancement of an existing principal 150 square feet or less (only one structure. Exterior and interior additions/alterations allowed per lot without permit) N N fall into this category. There are numerous home improvement projects within this classification, Any shed that is attached to a some of which may require multiple permits. building or carport B Y Residential additions can extend outward or Build farm building (on farm upward from the existing structure. Literally property, agricultural use only) E* N speaking, they are extensions of your living space.

Electrical work for additions will require an application for an electrical permit by a Master Electrician licensed with Prince George’s County.

Electrical work for alterations of existing dwellings will require an application for an electrical * Electrical and Mechanical Contractors License required to permit by a Master Electrician licensed with obtain electrical and mechanical trade permits. Prince George’s County. Additionally, the Health Department’s Division When Is a Permit Required? of Environmental Health will check to ensure that the existing septic system is sized adequately for any proposed increase to living area(s), Project Categories where applicable. The projects listed in this booklet are grouped into Like electrical work, the four general categories: installation of plumbing or natural gas piping requires an 1. Accessory Buildings (includes sheds); application by a Registered 2. Home Improvement and Repair Projects; Master Plumber/Gasfitter licensed by WSSC. Generally, the installation 3. Appliance Installations (includes replacements); of plumbing by homeowners is not and permitted. Installation of natural 4. Miscellaneous. gas piping and appliances by other than Registered Master Gasfitters is strictly prohibited. Type of Permit and Symbols For sprinklered homes, all additions (including sunrooms and patio enclosures) must also be The symbols listed below appear in the protected by an automatic sprinkler system in permit/plans column to indicate the type of permit accordance with NFPA 13D. required. The symbols denote: In accordance with Prince George’s County B — Building Permit Building Code, Subtitle 4, Section 4-245(c), E — Electrical Permit “Structures that undergo a complete demolition (exclusive of the foundation) due to lack of M — Mechanical Permit maintenance, fire, explosion or natural causes of the P — Plumbing and Gasfitting Permit Issued structure and additions to structures which exceed by Washington Suburban Sanitary one hundred (100) percent of the total floor area Commission (WSSC) (square footage) of the existing structure, shall be required to be fully sprinklered.” G — Grading Permit N — No Permit or Plans Required The following pages provide standard details for additional living space constructed onto existing Y — Plans Required dwellings.

If you are located in a subdivision with a Homeowner’s Association (HOA), a separate approval from the HOA may be necessary. Unless erected by the homeowner, all home improvement projects require a contractor who is licensed with the Maryland Home Improvement Commission. detached structure, you will need Health Department Wall Section approval of your building permit. You will need to Crawl Space know the size and location of your septic system and/or well. 12 Roof Shingles 4 min. If you have any questions regarding your 1/2O C-D Exterior Plywood Roof Sheathing property or Health Department requirements, contact Clearance 2O Building Paper the Water Quality and Septic Systems Program at Rafters Drip Cap Gutter w/Downspout (301) 883–7680. Remember, you will need to protect & Splashblock your investment in these systems by providing access TOP OF PLATE for construction equipment that prevents travel over Ceiling Joists any part of your septic system or near your well. R38 Insulation 1O x __ Fascia 1/2O Drywall Vented Soffit This guide will assist you in obtaining permits for Foundation Notes: Hurricane Tie 1) Minimum compressive strength of concrete Double Top Plate your home improvements. If you have any questions shall be 2500 psi. 2) Provide one 8O x 16O vent louvre for every or comments, please call the Permits and Information 70 square feet of crawl space area. Locate Management Section at (301) 883–5776. one vent within 3 feet of each corner. 3) Provide crawl space access (minimum 24O wide by 18O high). – 0 1/2 O 8 N R15 Insulation Vapor Retarder Siding 1/2O Drywall Building Paper 1/2O f Anchor Bolts @ 1/2O C-D Exterior Sheathing 32O O.C. 2 x4 Studs @ 16O O.C. 3/4O T&G Plywood Screwed and Glued 2 x Pressure Treated Plate TOP OF SUBFLOOR

Floor Joists

Insulation (R19 Min.; Horizontal Reinforcements R30 Preferred) Every Second Course Min. GRADE 8 O Minimum Proposed Crawl Space 18 O

8O Cmu or Concrete Minimum Min. 20Ox10O Conc. Footing w/ 2 30 O Cover 3 O #4 Cont. & #3 Ties @ 32O O.C.

Undisturbed Soil 3OMin. Cover

Insulation 30 O 20Ox10O Conc. Footing w/ 2 #4 Cont. & #3 Ties @ 32O O.C. should be directed to the Maryland Home Improvement Commission (MHIC) at (410) 230–6309 or their Undisturbed Soil

Min. 3OMin. Cover 3 O Cover web site at www.dllr.state.md.us.

235# Min. Roofing (Use Roll Roofing When Pitch Is Less than 3/12)

15# Felt (2 Layers When Pitch Is Less than 4/12)

3/8² Min. (PS70) CD Plywood Use Gable Vent on Each End (with Clips When Framing 24² O.C.) or Ridge Vent or Soffit Vent

Rafter

Gutter, Optional Manufactured Trusses at 24² O.C. Downspout, Splash Block Ceiling Joist

R19 Faced Batt or R19 Blown Insulation with 6 Mil Vapor Barrier

7¢6² Minimum Ceiling Height

Optional Soffit Exterior 1/2² Gypsum Board or 1/4² Wood Paneling Plywood or Other Approved Material

6² Stud at 24² O.C. with R19 Faced Batt Insulation OR Siding 4² Stud at 16² O.C. with R11 Faced Batt Insulation

1/2² Anchor Bolt at Corners and Every 8¢ O.C. Sheathing Extending 8² into Concrete Pressure-Treated Plate on Concrete Typical Mastic Seal or Fiberglass Sill Sealer

Grade 4² 2500 psi Concrete 8² CMU 6 ´ 6 #10 WWM 6 Mil Polyethylene Vapor 30² Min. Barrier with 6² Laps Vegetation Free, Compacted to 90% Sub-Grade 8² 1² ´ 24² Foam Insulation 2500 psi Concrete 16²

235# Min. Roofing (Use Roll Roofing When Pitch Is Less than 3/12) 15# Felt (2 Layers When Introduction...... 1 Pitch Is Less than 4/12)

Ceiling Joists Privacy Walls ...... 10

1/2² Gypsum Board Stoops and Porches ...... 18 8² CMU or 4² Brick and 4² Block

Felt

Joint Reinforcement at 16² Vertical Sheds...... 20

4² 2500 psi Concrete Gazebos...... 21 6 ´ 6M #10 WWM Grade 6 Mil Polyethylene Garages ...... 22 Vapor Barrier with 1² ´ 24² Foam Insulation 6² Laps

30² Min. Gravel Fill Vegetation Free, Compacted Carports...... 23 to 90% Sub-Grade 8² Min. Plumbing Work by Homeowners...... 24 2500 psi Concrete 16²

Additions and Alterations...... 25