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Grade Haus


Single Family Residential
New Construction
5,100 SF

Embedded in a steep hill, this Passive House is built entirely from insulated concrete forms (ICF’s). The rear of the building is set into the natural grade while the southeastern facade orients to face the sun. Large glazing at living spaces and ample exterior decks take advantage of morning and midday solar gain. The careful consideration for solar orientation is accentuated by a roof-mounted PV array, offsetting the project’s minimal energy use. The plan also includes integrated, yet private accommodations for multiple family generations to live beneath a single roof.


Passive House (PHIUS)+ 2018 Source Zero Energy Precertification

Building Metrics

Predicted Energy Use Intensity: -1.95 kBtu/yr/sf 


Building Envelope

Slab On Grade: R-33

Below Grade Walls: R-43

Above Grade Walls: R-43

Roof: R-60

Building Systems

Power / Fuel Source(s): All electric

Renewable Energy: Rooftop solar PV (20 kW system size)
Ventilation: Energy re
covery ventilator

Appliances: Energy-Star

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