San Francisco Bay Area
Attached ADU Construction
Explore an attached ADU for your Bay Area home, with an independent living layout and a carefully planned connection to the house.

A second home along a shared wall
An attached ADU joins the main house while providing its own living, cooking and bathing facilities. Position its entrance, kitchen and sleeping area in relation to the shared wall so both households have a workable layout.
Privacy on both sides
Walk the path each household would use from the street and mark windows that face shared outdoor space. Discuss sound, daylight and construction access while comparing locations along the existing house.
How is an attached ADU different from a bedroom addition?
A bedroom addition extends the rooms used by the main household. An attached ADU is planned as an independent dwelling, which changes how the entry, kitchen, bath and site layout are considered.
California ADU handbook