Huppert Remodel / ADU Addition
The remodel of this narrow, three story house with a magnificent view to the Olympic mountains includes a two story Accessory Dwelling Unit addition. In between, a new skylit entry features a pond fed by rainwater from the ADU roof.

Though similar in appearance to the main house, the ADU will incorporate more progressive construction techniques than its 20-year-old parent. The insulated-concrete-form stem walls will bear on footings of concrete mixed with 43% flyash. Walls and roof structure are SIP insulated sandwich panels skinned in OSB. Siding is cement board shimmed out to form a rain screen.

Heat is provided by a hydronic radiant slab below and a single fan coil unit above. The roof gutters gather water in reused wine barrels for irrigating the yard. Additionally, the house is a demonstration site for Seattle's eco-roof initiative and will soon have photovoltaic panels to generate enough solar electricity to power the lighting for the whole house.
ADU addition (two-story rental unit)
New entry canopy, reused wine barrel for rainwater collection
Design sketch of new atrium with pond
New atrium entry with pebble pond
Interior of ADU with territorial view from window seat New ADU addition on left, existing house on right
Sketch section through ADU
Sketch plan of ADU first floor Sketch plan of ADU second floor
Existing house
Insulated concrete form foundations, before concrete pour, made from recycled foam.