Service Areas

We work across central Contra Costa County: Walnut Creek, including Rossmoor and the Northgate and Tice Valley areas; Lafayette, Orinda and Moraga; Alamo, Diablo, Danville, Blackhawk, Camino Tassajara and San Ramon; and Pleasant Hill, Concord, Clayton and Martinez. Some are incorporated cities with their own encroachment rules. Others, like Saranap, Acalanes Ridge, Shell Ridge, Castle Hill and Reliez Valley, are unincorporated pockets where the County sets the rules at the street. Rainfall nearly doubles from the Concord side to Orinda, and hillside lots are the norm in Lamorinda and the San Ramon Valley. Each town page covers what is different there.