Your backyard could be so much more.
Rental income, room for family, a home office or guest house — we build Bay Area ADUs that fit your goals, at a locked price with no change orders.
Why Bay Area homeowners choose us
No surprise bills. Real numbers up front. A team that handles the hard parts — so you can just watch it get built.
Your quote is the final price. We build in a contingency buffer up front, so there are no change orders and no surprise bills — the #1 fear homeowners have, solved.
Before you commit, we show you the real numbers for your neighborhood — what your ADU costs to build and what it can realistically rent for in your city.
We handle the city permits and paperwork end-to-end and know how each Bay Area city moves — so your project doesn't stall in red tape.
What we build — and what it costs
No vague "it depends." Here are real Bay Area cost ranges by ADU type. You get a locked, itemized price for your exact project on the call.
Turn your existing garage into a livable unit. Lowest cost, fastest build, and no replacement parking required under AB 68.
Most popularA new unit built onto your home. A great balance of cost and space when a garage conversion isn't the right fit.
FlexibleA standalone backyard home. The most privacy and the highest rental income potential — a true second residence.
Highest ROIRanges reflect typical 2026 Bay Area projects. Final price depends on size, site & finishes — locked before we break ground.
Bay Area ADUs rent fast — and pay you back.
Vacancy for a well-built Bay Area ADU is near zero. Here's what homeowners are earning by area:
Typical 2026 Bay Area 1-bedroom ADU rents. Your actual rent depends on size, location & finish — we project it for your property on the call.
How it works
Our promise: the price you sign is the price you pay.
The #1 reason homeowners fear building is getting hit with surprise costs. We built our whole model to make that impossible.
The ADUs we build
Real reviews from Bay Area neighbors
ADU came in exactly on budget. No changes, no extra charges.
No surprises. The finished ADU looks great.
CoGeneral dealt with all of it — I never had to call the city.
Delivered on both. Would use them again.
Done four days early, price didn't change from the quote.
Quality of the build was exactly what we wanted.
California law & financing work for you
Recent ADU laws plus financing options make building easier and cheaper than most homeowners realize. We make sure you get every advantage.
ADU questions, answered
How much does an ADU cost in the Bay Area?
Do you handle the permits?
Can I really rent out my ADU?
How long does it take?
What if costs go up mid-project?
Are you licensed and insured?
See what your backyard could do.
Free, no-obligation, and a locked price from day one. Find out what your ADU could cost — and earn.