Apex Dwelling Solutions
San Mateo, CA
4.54.5(13 reviews)
ADU ConstructionDesign-Build ADU
Specializing in ADU construction and related services in San Mateo, CA.
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ADU Design-BuildSan Mateo, CA
Best ADU design-build firms in San Mateo, California
Looking for the best ADU design-build firms in San Mateo, California? Our directory features 1 vetted adu design-build firms serving the San Mateo area. Whether you're planning a new ADU construction, garage conversion, or backyard cottage, find the right builder for your project.
1 adu design-build firms found
Average rating: 4.5
Top ADU design-build firms in San Mateo
Why Choose ADU Design-Build in San Mateo?
San Mateo is one of the top markets for accessory dwelling units in California. With growing demand for affordable housing, ADU construction in San Mateo offers homeowners an excellent opportunity to add living space, generate rental income, or house family members. Our curated list of adu design-build firms in San Mateo helps you find experienced professionals who understand local building codes, zoning regulations, and permit requirements.
What to Look for in ADU design-build firms
- 1Licensed and insured adu design-build firms with experience in San Mateo
- 2Knowledge of San Mateo zoning laws and ADU permit requirements
- 3Portfolio of completed ADU projects in the San Mateo area
- 4Transparent pricing and detailed project timelines
- 5Strong reviews and ratings from local homeowners
- 6Warranty coverage on construction and materials
Frequently Asked Questions
How much does it cost to build an ADU in San Mateo?
ADU construction costs in San Mateo typically range from $150,000 to $350,000 depending on size, design, and finishes. Garage conversions are generally less expensive ($80,000–$150,000), while custom-built detached ADUs can cost more. Get free quotes from our listed adu design-build firms to compare prices.
Do I need a permit to build an ADU in San Mateo, California?
Yes, ADU construction in San Mateo requires building permits. California has specific ADU regulations, and local zoning laws may have additional requirements. Our listed builders can help you navigate the permitting process.
How long does it take to build an ADU in San Mateo?
ADU construction timelines in San Mateo typically range from 4–12 months, depending on the project type. Prefab ADUs can be installed in 2–4 months, while custom builds may take 8–12 months including design and permitting.