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  6. Treehouse / SHED Architecture & Design

Treehouse / SHED Architecture & Design

  • 01:00 - 15 April, 2011
Treehouse / SHED Architecture & Design
Treehouse / SHED Architecture & Design, Courtesy of SHED Architecture & Design
Courtesy of SHED Architecture & Design

Courtesy of SHED Architecture & Design Courtesy of SHED Architecture & Design Courtesy of SHED Architecture & Design Courtesy of SHED Architecture & Design +49

From the architect. Treehouse is a single family residence located on a park in Seattle, Washington designed by SHED Architecture & Design. Built on an inaccessible, steep slope lot, the project overcame significant design and construction challenges to create a unique home elevated in the trees.

The project had three primary design objectives: to minimize long term site impacts, design a cost effective and resource efficient building, and use view, light and enclosure to accentuate the experience of living in the tree canopy.

Courtesy of SHED Architecture & Design
Courtesy of SHED Architecture & Design

In 1999, the owners discovered an “un-buildable” lot while searching the internet for cheap vacant lots in Seattle. At first attracted by the price, the owners soon realized that the lot was adjacent to the park where their community garden plot was located. Despite the challenges posed by the lot itself, the vacant lot seemed too good to pass up for the sale price of $15,000. Ten years of planning/design, construction and sweat equity later, their project has been realized.

Site conditions generated design solutions.

• Site accessibility and zoning restrictions necessitated a compact floor plan

• Design solution worked within the limitations of crane to facilitate construction

• Auger cast piles anchor the building to the slope and preserve the natural drainage/slope

• Steel framing support the house and carport above the slope and in the trees

Design solutions addressed basic questions of living, DIY opportunities and common materials.

• House emphasizes natural light and quality of space over expensive products / finishes

• Simple plan with a developed, double height section creates the sense of a large house

• Openings accentuate experience of and connection to park, tree canopy and sky

• Skylight is centrally located, and functions as a “hearth” that connects house interiors

• Furniture designed and built by owner or friends, or purchased vintage pieces

• Multi-colored asphalt siding used to evoke tree bark and camouflage exterior

Budget drove design decisions.

• Compact 24’ x 30’ footprint on three levels used to create 1644 SF of living area

• Pragmatic/direct detailing for all building assemblies

• Salvaged and/or re-used materials

• Ikea kitchen cabinets, appliances, and countertops were purchased for $4700

• Sweat equity

The project pursued sustainable design solutions.

• Compact footprint reduces site impact, as well as material costs / long term energy use

• SIPS roof panels / BIBS insulation used to create a thermally efficient envelope

• Pre-installed Solar Thermal hot water tank, water lines and LV control wire (Budget prevented immediate installation of this system)

• Future PV system planned for the carport roof (budget prevented installation)

• Operable skylight passively cools/ventilates the house / reduces lighting requirements

• Heat recovery ventilation (HRV) system supplies all mechanical fresh air

• Hydronic radiators used for primary heating system

• Water conserving fixtures and dual flush toilets

• Energy Star appliances

• All paints and finishes low/no voc

• Vintage/salvage materials and furnishings

Cite: "Treehouse / SHED Architecture & Design" 15 Apr 2011. ArchDaily. Accessed . <http://www.archdaily.com/127882/treehouse-shed-architecture-design/>
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71 Comments

KWright · March 26, 2013

What was the septic tank solution on this steep slope ?

Centor4 · December 28, 2011

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Zaedrus · April 15, 2011

The Dwell issue featuring this project included a cost/s.f. that seemed really high for the 'nothing in this house should be precious' credo of the owners. The materials and details are basic, and the site was affordable.

It leaves me wondering if the steel frame and steep grade (foundation installation) drove up costs, or if it was the DIY approach where performance took more time or a couple tries to get right?

It's a cool and inspiring project! The asphalt roll siding is unfortunate, but the overall uniqueness paired with the overlap of internal volumes, natural lighting, the perch and vistas all seem like a fair trade!

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