Dream.Design.Build. Matthew Smith, Principal 2205 NE 175Th Street Shoreline, WA 98155

Dream.Design.Build. Matthew Smith, Principal 2205 NE 175th Street Shoreline, WA 98155

February 17, 2020

PREFABRICATED WOODEN YURT MODEL DADU, SEATTLE WA

PROJECT DESCRIPTION

Dream.Design.Build. has been custom designing yurt-inspired round houses throughout the US and Canada since 2012. Each project starts with a prefabricated shell manufactured in Washington’s Methow Valley by our partners at Smiling Woods Yurts. This model DADU submission is based upon a successful project we designed and permitted for a north Seattle residence in 2017. The unit was lovingly completed in 2018 as a true mother-in-law to support an extended family. The wooden “yurt” kit (consisting of exterior 2x6 wall panels, 2x12 roof structure, metal roofing panels, 5 ft compression ring and central skylight, and hardware) was assembled within two weeks upon a stem wall foundation and floor deck. Once the shell was up, providing a dried-in work space, the rest was just like any other residential building relying on known contractor skillsets. The covered porch design shown here was eliminated from the permitted project but remains an optional feature.

PROJECT NARRATIVE

Context

This model DADU is based upon the aesthetic and structural principles of the traditional yurt—a pure circular structural shell with a conical roof harmonizing the forces of tension and compression—while exceeding engineering and energy code requirements. In an urban setting dominated by strict orthogonal planning, round structures offer relief through their organic form.

Energy Efficiency

Round structures contain 12% less volume to heat and cool than rectilinear structures with the same footprint. When combined with natural convection currents created by the circular plan and conical roof, they offer a highly efficient, low energy consumption housing alternative.

Family Friendly

This model DADU is designed with an en-suite master bedroom below an open loft which, with code compliant stair and egress windows, can accommodate a second bedroom for a small family.

Neighbor friendly

While DADU’s provide solutions for densification, they present a challenge in terms of the impact on neighboring residences faced with sheer walls built against allowable setbacks. Circular structures, however, ease away from adjacent properties with curving walls, and their conical roof lines permit sunlight to pass through while enhancing view corridors with their iconic profiles.

Email: [email protected] Phone: 206‐683‐1713 www.DreamDesignBuild.org Dream.Design.Build. Matthew Smith, Principal 2205 NE 175th Street Shoreline, WA 98155

Privacy

Rectilinear DADU plans is limited in orientation to four turns and a mirror. This wooden yurt model DADU plan can be dialed to any orientation. Thus, windows can be turned towards desirable views, and away from adjacent structures or yards where privacy is preferred.

Cost effective

There is an immediate cost savings associated with this prefabricated wooden yurt concept. Because the shell is manufactured in a factory setting from established templates, there is very little waste in their production greatly reducing material and labor costs, as well as minimizing impact on the immediate environment and landfills.

Constructability

These 25ft wooden yurt kits can be completely assembled on-site in as little as two weeks, hastening the construction process and rapidly providing a dried-in work space. Furthermore, because the prefabricated shell arrives as a kit-of-parts, it greatly reduces the amount of construction noise in residential neighborhoods.

Email: [email protected] Phone: 206‐683‐1713 www.DreamDesignBuild.org Dream.Design.Build. Matthew Smith, Principal 2205 NE 175th Street Shoreline, WA 98155

PROJECT SPECIFICATIONS

 PROJECT SPECIFICATIONS, AS SHOWN o 25’ DIAMETER KIT WITH 12’ EXTERIOR WALL PANELS. o 500 SF MAIN FLOOR + 250 SF LOFT + 210 SF COVERED PORCH (OPTIONAL) o 1-BEDROOM, 1-FULL BATHROOM, KITCHEN, LIVING ROOM, OPEN LOFT

 PREFABRICATED KIT PACKAGE (BY SMILING WOODS YURTS) INCLUDES: o STANDARD PRE-ASSEMBLED WALL PANELS INCLUDE: 2X6 STUDS, 1/2” CDX PLYWOOD SHEATHING; VAPOR BARRIER, 1X6 T&G CEDAR SIDING, PRE-INSTALLED VINYL WINDOWS AND EXTERIOR SIMPSON DOORS. UPGRADES AVAILABLE ON SIDING AND WINDOW PACKAGES. o 2X12 ROOF RAFTERS, SUFFICIENT DEPTH TO MEET R-38 VAULTED CEILING INSULATION REQUIREMENTS. o 5’ DIA. GLULAM COMPRESSION RING AND STEEL TENSION CABLES, ENGINEERED TO EXCEED LOCAL STRUCTURAL REQUIREMENTS. o METAL ROOFING PANELS AND FLASHING KIT, COMPLETE WITH ALL HARDWARE AND AIR VENTILATION COMPONENTS. o OPTIONAL: PORCH ROOFING o 5 FT OPERABLE SKYLIGHT, ELECTIC POWER OPTION. o NOT INLCUDED: . FOUNDATION MATERIALS AND SILL PLATE . MAIN FLOOR AND LOFT FLOOR DECKS . WALL AND CEILING FINISHES . INSULATION AND UTILITIES . FIXTURES AND FINISHES . PORCH DECK AND ROOF STRUCTURE

 CUSTOM HOME DESIGNER: DREAM.DESIGN.BUILD.,INC. o COST FOR MODEL DADU PLAN TEMPLATE: $1000 o COST TO REVISE OR COORDINATE ENGINEERING: $125/HR

 CONSTRUCTION COSTS: o 25’ PREFABRICATED WOODEN YURT KIT WITH 12’ WALLS: APX. $36,000 o TOTAL COST TO FINISH: $150-$200/SF, OR $112,000-$150,000 (INCLUDING THE COST OF THE PREFABRICATED KIT)

 MECHANICAL SYSTEM RECOMMENDED: o 2-ZONE ELECTRIC MINI-SPLIT DUCTLESS HEAT PUMP . ZONE 1: MAIN OPEN LIVING SPACE AND KITCHEN . ZONE 2: MASTER BEDROOM o LOFT HEATED BY WAY OF NATRUAL CONVECTION CURRENTS o MASTER BATHROOM HEATED BY WALL MOUNTED CONVECTION HEATER

Email: [email protected] Phone: 206‐683‐1713 www.DreamDesignBuild.org OFFERING:

DESIGN & BUILDING PLANS PERMIT SUBMITTAL CONSTRUCTION CONSULTATION

Owner:

Site Addres:

Mailing Address

Phone e-mail

Consultant Address Address Phone Fax e-mail

No. Description Date PREFABRICATED WOODEN YURT MODEL DADU SEATTLE, WA

CLIENT TBD SEATTLE DADU

COVER SHEET

Project number 20-02_SEATTLE_DADU Date 02/17/20 Drawn by MATTHEW SMITH Checked by DDB A0 Scale 2/17/2020 12:01:14 PM 12:01:14 2/17/2020 2/17/2020 12:01:15 PM 12:01:15 2/17/2020 DDB 02/17/20 1/4" = 1'-0" = 1/4" MATTHEW SMITH MATTHEW TBD A1 20-02_SEATTLE_DADU

CLIENT TBD CLIENT SEATTLE DADU SEATTLE FRAMING PLANS FRAMING FOUNDATION AND FOUNDATION mail mail mail mail mail mail - - - - - No. Description Date Owner: Owner: Addres: Site Address Mailing Phone e Consultant Address Address Phone Fax e Consultant Address Address Phone Fax e Consultant Address Address Phone Fax e Consultant Address Address Phone Fax e OFFERING: DESIGN & BUILDING PLANS PERMIT SUBMITTAL CONSULTATION CONSTRUCTION Project number Project Date by Drawn by Checked Scale

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Site Addres:

Mailing Address

Phone e-mail

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Project number 20-02_SEATTLE_DADU Date 02/17/20 Drawn by MATTHEW SMITH Checked by DDB A3 Scale 1/4" = 1'-0" 2/17/2020 12:01:16 PM 12:01:16 2/17/2020 Dream.Design.Build. Matthew Smith, Principal 2205 NE 175th Street Shoreline, WA 98155

PREFABRICATED WOODEN YURT MODEL DADU, SEATTLE WA

Email: [email protected] Phone: 206‐683‐1713 www.DreamDesignBuild.org