Garage & Loft ADU Construction in the Bay Area
California's ADU laws have made it easier than ever to add a legal dwelling unit to your property — and Bay Area rents make the return compelling. Best Construction Inc designs and builds garage ADUs, loft conversions, and detached ADUs across the Bay Area, handling design, permits, and construction under one contract.
- Licensed, bonded & insured
- Full ADU permitting experience
- Free same-week estimates
Get a Garage & Loft ADU Free Quote
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Sq Ft Installed
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Construction & ADU Services
ADU Design and Construction Across the Bay Area
California evolution of ADU law has made the Bay Area one of the best markets in the country for homeowners looking to add legal dwelling units to their properties. Best Construction Inc designs and builds ADUs throughout the Bay Area, from garage conversions and loft build-outs to new detached structures on existing residential lots. We manage the full process: feasibility assessment, architectural plans, permit submission and tracking, construction, and Certificate of Occupancy — so you have one point of contact from first conversation to first rent check. Our ADU experience spans Alameda, Contra Costa, San Mateo, and Santa Clara counties, giving us deep familiarity with the specific requirements and timelines of each local building department.
Why Garage & Loft ADU
The Bay Area's Best Property Investment
An ADU adds a rentable unit to your property, housing for family members, or a private home office — and is now one of the most straightforward property improvements to permit in California.
California ADU Law Works in Your Favor
SB 9, AB 68, and subsequent California legislation have streamlined ADU permitting, reduced fees, and prohibited many local barriers that previously stopped homeowners from building.
Rental Income Potential
Bay Area ADUs typically rent for $1,800 to $3,500 per month depending on location, size, and finishes — generating income that often covers the construction cost within 5 to 8 years.
Multi-Generational Housing
An ADU provides private, comfortable housing for aging parents, adult children, or live-in caregivers — within your property boundaries.
Adds Appraised Value
A permitted, finished ADU adds significant appraised value to your property — far beyond the construction cost in most Bay Area markets.
Our Process
Six Steps. Zero Surprises.
From first call to final walkthrough — here's exactly how your project moves forward.
Feasibility Assessment
We assess your property's ADU potential — setbacks, height limits, utility capacity, and parking requirements — and advise on the best ADU type for your site.
Design & Plans
Architectural plans are prepared that meet California ADU standards and your local municipality's requirements.
Permit Submission
ADU permit applications are submitted to your city or county building department. We track and respond to all plan check comments.
Foundation & Framing
New foundation or conversion framing begins after permit approval.
MEP & Insulation
Electrical, plumbing, and HVAC are installed and inspected; insulation meets current Title 24 requirements.
Finishes & Certificate of Occupancy
Interior finishes are completed; we coordinate final inspections and obtain the Certificate of Occupancy.
Every paver quote includes
Why Best Construction Inc
The crew that started as Best Pavers.
We've been installing pavers across the Bay Area for over 19 years. Pavers are literally in our DNA — and that experience shows up in every base prep, every joint and every final walkthrough.
BBB Accredited
Verified track record with the Better Business Bureau.
19+ years of pavers
Started as Best Pavers Construction — pavers are our origin.
Transparent pricing
Itemized written quotes. No vague allowances or change-order traps.
On time, on budget
Written schedule and milestone payments — no surprises.
Service Area
Proudly Serving the San Francisco Bay Area
Based in Pinole, CA — working across five Bay Area counties.
Testimonials
What Our Garage & Loft ADU Clients Say About Us
Rated 5.0 by Bay Area homeowners on Google Reviews.
F A Q
Frequently Asked Questions
Everything you need to know before starting your paver, demolition, or building project with us.
Garage conversions typically run $100,000 to $200,000. New detached ADUs range from $200,000 to $400,000+ depending on size, site conditions, and finish level.
Under California law, most ADU applications must be approved within 60 days. Actual timelines vary by jurisdiction; we track and expedite your application throughout the process.
Yes. Once you have a Certificate of Occupancy, your ADU is a legal dwelling unit that can be rented to a tenant of your choice.
Not always. Junior ADUs and smaller garage conversions often share utilities with the main dwelling. Larger ADUs may require separate meters — which we assess and plan for during design.
Add a Unit, Add Income
Free ADU feasibility consultation across the Bay Area. Call or text Best Construction Inc today.