Best ADU Builders in the SF Bay Area (2026)
Find the best ADU builders in the SF Bay Area. Every contractor CSLB-verified with active license, bond, and workers comp. Curated for ADU experience across San Jose, Oakland, San Francisco, and Berkeley.
SF Bay Area
Can You Build an ADU in San Francisco? (2026 Guide)
Can you build an ADU in San Francisco? Yes, but SF adds local rules on top of state law. Two permit programs, 6-18 month timelines, historic district restrictions, rent control traps, and costs 60-80% above Sacramento. Full 2026 guide.
ADU Cost in the SF Bay Area — 2026 Guide
ADU cost in the SF Bay Area runs 40-60% higher than Sacramento. Detached ADU: $250K-$500K. Garage conversion: $100K-$200K. City-by-city costs for SF, Oakland, San Jose. Permit fees, soft costs, labor rates, and CalHFA grant eligibility.