Building a Multigenerational ADU in Thousand Oaks
Technically Ventura County, but treated like the far edge of the LA multi-gen market. Larger lots, cleaner permitting, and family-oriented planning department.
Best for
The top pick for families willing to move slightly outside the LA basin to get more land and a quieter build environment.
Multigenerational home guide →What makes Thousand Oaks different
- Ventura County follows the same state ADU law — you get every LA-equivalent protection.
- Local ordinance allows detached ADUs up to 1,200 sq ft on lots ≥ 5,000 sq ft.
- Lower fees than LADBS on comparable projects.
Zoning note: Most of Thousand Oaks is Very High FHSZ; expect the same Chapter 7A fire hardening as Agoura.
Before you sign anything in Thousand Oaks, read our guides on how to choose an ADU contractor and read a bid and ADU financing options in California. If you'd rather have someone do it with you, here's how our free ADU advocacy works.
Free ADU advocacy for Thousand Oaks families
We shortlist vetted Thousand Oaks ADU builders, compare their bids honestly, and walk you through financing. You pay nothing — contractors pay us only if you move forward with one.
Book a free Thousand Oaks consultation