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ADU Construction in San Francisco
San Francisco offers strong ADU incentives, but dense lots and hillside conditions require careful design and permitting expertise.
12–16 months
Average Permit Timeline
$320,000
Starting Cost
$340,000–$460,000
Typical Project Cost
48
Projects Completed
San Francisco ADU Regulations & Requirements
Building an ADU in San Francisco requires navigating San Francisco County's zoning and the city's specific standards. Our team manages the full process so your project stays compliant and on schedule.
- Ministerial approval available for qualifying ADUs
- Rent control may apply to new ADUs in some buildings
- Strict fire-egress and light/ventilation requirements
- Historic district design review where applicable
Why Build With ADU.zone in San Francisco
With 48 completed projects in the area, we bring local permit knowledge, transparent pricing, and premium construction to every San Francisco ADU. From feasibility to final inspection, a dedicated project manager guides you at every step.