ADU Contractors in Ventura County, CA
3,745 active, license-verified contractors with an office of record in Ventura County — general builders (A & B) and the licensed trades that build ADUs (C-10 electrical, C-36 plumbing, C-5 framing). Pick your city, or search directly.
Mars Construction Industries Corp
ADU Cities' own design-build team
CSLB #1138550 · A · B · C-36 · C-20
Building ADUs across Los Angeles, Orange, Riverside, San Bernardino, San Diego & Ventura counties
Ventura County stretches from the Oxnard Plain and the Conejo Valley — Thousand Oaks, Simi Valley, Newbury Park — to Ojai, Fillmore, and the Heritage Valley. This directory lists 3,745 active, license-verified contractors with an office of record in the county — general builders (A and B) plus the licensed trades ADU projects use (C-10 electrical, C-36 plumbing, C-5 framing).
Much of the county sits in or near high fire-severity zones, so ADU projects here often turn on defensible-space and construction standards as much as on design. Verify the license at CSLB, and make sure your builder knows your city's current fire and ADU requirements.