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Kumar Residence, zeitgeist Design, san francisco, green home renovation, high performance envelope, green renovation

The original home was built in the 1950s, but was in need of some updating to make it work better for the new owners. It was expanded to include more entertaining space with a loft-like living space and improved views of the area. The 3,000-square-foot house has 4 bedrooms and 3 ½ baths and revamped front and backyard landscape. Sliding glass walls expand the interior out into the yard to take advantage of the moderate climate.

Zeitgeist was utilized Passive House design standards in the remodel of this home and while the home is not certified, it does feature a high level of insulation and air tightness. Spray foam insulation, high thermal mass and high performance window units from German manufacturer Zola and heat recovery ventilation, contribute to the home’s overall tight envelope. In addition, the home features a high level of daylight penetration and enjoys natural ventilation during more temperate months. There is no need for an air conditioning system and the owners were sold on the concept of lower electric bills with the help of a passive house-inspired design.

Images © Ian Umeda