Bjarko|Serra Architects’ modern backyard cottage is a 800 s.f. mini-dwelling created in response to a recent zoning code change in Seattle to create more density. Dubbed the DADU (detached accessory dwelling unit), this backyard cottage has been designed as an addition to a single-family home, but is flexible enough to serve as a small, stand-alone home for austere inhabitants. The 5-star Built Green design focuses on creating an innovative approach to small scale building on an occupied site, where off-site production is the primary mode used to decrease site impact. The dwelling also features a low site-impact foundation system of pin piles supporting a raised floor system; the main building shell and roof are composed of pre-fabricated high R-Value SIPS wall panels; rainwater harvesting is used for garden irrigation and storm water management; roof mounted solar systems provide electricity generation and hot water; low- or no-VOC finishes are used throughout; and recycled and sustainable materials are used when possible.
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