Thousand Oaks is a neighborhood of Berkeley in Alameda County, California. Located at the base of the Berkeley Hills, it lies at an elevation of 239 feet (73 m). The principal shopping area is Solano Avenue, along the southern edge of the neighborhood. There are also two smaller clusters of shops on the northern edge of Thousand Oaks, across the county line in Kensington on Arlington Avenue and on Colusa Avenue. The neighborhood is primarily residential, mostly consisting of single-family houses built in the early 20th century, sometimes with In-law apartments, as well as a handful of apartment buildings.