Berkeley Hills ADU

Tucked into the Berkeley Hills, a family with two children wanted to add an accessory dwelling unit (ADU) for the long-term prospect of multi-generational living. Due to the steep topography and limited yard space, the 850 sq. ft. ADU took shape as a second-floor addition. Careful shaping of the building volumes and matching of existing material makes the addition blend in and feel "as if it’s always been there”, as many locals commented.

The interior of the 2-bedroom, 1-bath dwelling features an open living/dining/kitchen area with a generous façade opening up to Tilden Park and the large Deodar Cedar right in front of the window wall, which the owners described as living in a treehouse. The spectacular outdoor setting is also captured on the roof deck with its panoramic views of the hillsides to the East.

Powered by a new solar PV system on the roof, both domestic hot water and space heating are provided by heat pumps. The ADU was equipped with recovery ventilation for energy conservation and enhanced indoor-air quality, and the new shower was plumbed for gray-water diversion into the yard.

Julio Sanchez of Universal Construction was the General Contractor who constructed this complex project that involved fire zone requirements as well as stringent sound separation criteria between the two dwellings units.