Find Professionals
Shop Products
Your shopping cart is empty.
Join as a Pro
Houzz Pro: One simple solution for contractors and design pros
Join as a Pro
Houzz Logo Print
Cottage ADU's profile photo

Cottage ADU

General Contractors

About Us

Free consultation
Free estimate
Custom work
The Bay Area's #1 Custom ADU Provider
We build customized Accessory Dwelling Units (ADUs) from start-to-finish. From initial design to permits to construction, we are California's #1 Custom ADU provider for detached, attached, and garage conversion ADUs. Contact us today for a Free, No Obligation Consultation and Estimate. to learn more about how we can help build your no-hassle ADU. Our vision We believe in a world where the neighborhoods with the most opportunity are both livable for existing residents and accessible for newcomers. Like most California residents, we’ve experienced the pain of the housing crisis: first-hand as renters trying to find a decent place in a nice neighborhood, our friends and siblings moving out of state, and our parents figuring out how to afford to age in place. We're here to help you build room for more.

Services Provided

Accessory Dwelling Units (ADUs), Modular Home Construction, Sustainable Design, Tiny House Construction

Areas Served

Alameda, Albany, Belvedere Tiburon, Berkeley, Broadmoor, Daly City, El Cerrito, Emeryville, Mill Valley, Muir Beach, Oakland, Piedmont, San Bruno, San Francisco, Sausalito, South San Francisco, Tiburon, South Bay, San Jose, Cupertino, Campbell, Milpitas, Union City, Palo Alto, San Mateo, Redwood City, Menlo Park, Hillsborough, Hayward, Castro Valley, San Leandro, Richmond, Larkspur, Pleasanton, Dublin, San Ramon, Danville, Walnut Creek, Livermore, Pleasant Hill, Vallejo, Novato, Saratoga, Los Gatos, Los Altos, Los Angeles, Van Nuys, San Fernando Valley, Culver City, Los Angeles County

Back to Navigation

17 Projects

This Spanish Bungalow ADU is The California Backyard Dream

4 photos
Back to Navigation


Back to Navigation
Back to Navigation

5 Ideabooks

#1 Custom ADU Provider
Cottage ADU
Average rating: 5 out of 5 stars
Greater San Francisco Bay Area, CA 94103
Typical Job Cost $100,000 - 400,000
A-to-Z ADU design, permit, and construction cost varies depending on project size and complexity. Contact us today or visit to learn more about how we can build your no-hassle, customized, stick-built ADU from start to finish!