SITE AND PROGRAM: Accessory Dwelling Unit for an art collector in a Wurster House garden, a quarter mile from the Hayward Fault
DESIGN: Modest footprint with inside-out courts allows for an efficient building permit without neighborhood review, and enables a phased building expansion. The open plan is surrounded by clerestories viewing the surrounding tree canopy.
TECHNOLOGY: A roof diaphragm floats atop an earthquake-proof steel column structure, set above a thickened edge slab-on-grade with radiant heating. The concrete foundation is lightly incised into the hillside, creating a rear retaining wall to divert rainwater.
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