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Location: Arvada, Colorado

Project type: Single Family Residential

Energy Performance: Passive House Principles

Project Year: 2019-2020

Firm Involvement: Architecture + Interiors + Construction

Size: 3,100 SF

Program: 4 Bed, 3 Bath, 2 Car Garage

Stories: 2.5

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BONSAI was engaged by a structural engineer looking to build his family a comfortable + high performing home with a sleek, modern take on the traditional American farmhouse. The build site is situated at the south end of a 1-acre property and opens itself to the northwest to capture mountain views and sunsets. Working with our client, it was important to celebrate and expose the super structure and utilize black steel to accentuate the white-farmhouse form.

Large south facing glazing highlights the stairs and in combination with 3” concrete floors, adds a passive heating element to the main spaces. A vertical wood fins screen can be rolled across the exterior of the house to provide shading on high solar gain days.

Additional conditioning is achieved via ductless mini splits and electric heat pump system. Recessed ceiling cassettes provide heating or cooling to specific zones and can be controlled to the room user’s preference independent of the entire homes volume. The home is outfitted with an Energy Recovery Ventilator (ERV) which circulates conditioned + filtered fresh air, 100% of the time, keeping constant temperatures throughout. A highly efficient wood burning stove in the main space adds ambiance and backup heating in the event of power outages.

The second level houses the master suite, with a five-piece master bathroom and walk in closet along with secondary bedrooms. The attic level was designed and roughed in as a future contained unit.

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