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ADU BuildersSanta Monica, CA

Best ADU builders in Santa Monica, California

Looking for the best ADU builders in Santa Monica, California? Our directory features 2 vetted adu builders serving the Santa Monica area. Whether you're planning a new ADU construction, garage conversion, or backyard cottage, find the right builder for your project.

2 adu builders found
Average rating: 3.9

Top ADU builders in Santa Monica

Atlas Building Co

Santa Monica, CA
3.9(28)
Custom ADUDesign-Build ADU

Specializing in ADU construction and related services in Santa Monica, CA.

Why Choose ADU Builders in Santa Monica?

Santa Monica is one of the top markets for accessory dwelling units in California. With growing demand for affordable housing, ADU construction in Santa Monica offers homeowners an excellent opportunity to add living space, generate rental income, or house family members. Our curated list of adu builders in Santa Monica helps you find experienced professionals who understand local building codes, zoning regulations, and permit requirements.

What to Look for in ADU builders

  • 1
    Licensed and insured adu builders with experience in Santa Monica
  • 2
    Knowledge of Santa Monica zoning laws and ADU permit requirements
  • 3
    Portfolio of completed ADU projects in the Santa Monica area
  • 4
    Transparent pricing and detailed project timelines
  • 5
    Strong reviews and ratings from local homeowners
  • 6
    Warranty coverage on construction and materials

Frequently Asked Questions

How much does it cost to build an ADU in Santa Monica?

ADU construction costs in Santa Monica 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 builders to compare prices.

Do I need a permit to build an ADU in Santa Monica, California?

Yes, ADU construction in Santa Monica 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 Santa Monica?

ADU construction timelines in Santa Monica 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.