Casa Aguila | U.S. Green Building Council
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LEED BD+C: Homes v3 - LEED 2008

Casa Aguila

20385 Rancho Villa Road
Ramona, CA 92065
United States

LEED Platinum 2016

Casa Águila, named for the golden eagles that soar through the adjacent San Pasqual Valley, replaces an earlier dwelling that burned down in the 2007 Witch Creek Fires. Out of the ashes arose the opportunity to build a more durable, energy and water-efficient home that would serve as a case study for residential sustainability in the region. The project has been well-publicized in large part due to its LEED Platinum status, including winning the 2017 Department of Energy’s Housing Innovation Award, being showcased in Vox Media’s “Home of the Future” video series, and being featured on the cover of San Diego Home and Garden Lifestyles Magazine.

The two homeowners, along with the LEED project team, decided to take their single story ranch-style home through LEED certification to ensure that all aspects of sustainability were taken into consideration, including water, energy, materials, indoor air quality, and site sustainability. Given its background, a fire-rebuild, ignition-resistance design was top priority to this home. Some measures include a 10,000 gallon tank of water for fire suppression, triple glazed “bullet proof” glass in the doors and windows, and combustion proofing of the little exterior wood that was used by treating it with sodium borate (also a form of nontoxic pest control). The blown-in cellulose insulation is predominantly composed of recycled paper and creates a seamless thermal barrier. The exceedingly airtight and well-insulating components of the wall assembly lend to its fire resistant properties as well as its extremely energy-efficient design.

As San Diego is an extremely drought-prone area, water efficiency was also a key goal for the homeowners. Casa Águila received the County’s first permit for onsite wastewater treatment which, combined with graywater, is filtered and irrigates a food forest. One hundred percent of potable and nonpotable water used in the home is supplied by rainwater, which makes this home completely water-autonomous. The home’s energy goals are equally as lofty, striving for eventual grid-disconnection through utilization of battery power, a dual-axis solar photovoltaic system and a vertical-axis wind turbine. Also, the home features a wide array of advanced building products including liquid membrane air sealing, Phase Change thermal energy storage, heat recovery ventilation and drywall that absorbs and converts VOCs into inert compounds.

Casa Águila has set a precedent for residential sustainability and innovative design in the region and continues to educate the green building community through participation in tours and workshops.

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Project details
4,215 sf
13 Oct 2016
Data Reporting
Energy Update
Water Update
Transportation Update
Waste Update
Human Experience Update

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