Last updated: September 24, 2026
What affects the price
Building an ADU is a major project, and the final bill depends on a few key things. Site prep is a big factor; if your land is sloped or needs extensive utility connections, costs go up. The materials you choose—from siding to kitchen finishes—also change the math significantly. Whether you’re building a detached unit or converting an existing garage shifts the permit requirements and structural work needed. We provide exact pricing confirmed free on the call.
About this service
This involves using your secondary unit as a source of monthly income by leasing it to tenants. You might consider this if you want to offset your mortgage or capitalize on high local demand for smaller housing. Success depends on local rental laws and how well the unit is designed for privacy. Exact pricing confirmed free on the call.
Frequently asked in San Francisco
What are the requirements for building an ADU in San Francisco?
How much do ADU permits cost in San Francisco?
The cost of permits for an accessory dwelling unit in San Francisco can vary based on the project's size and complexity. Permit fees are typically calculated based on the estimated value of the construction. You may also encounter costs for plan reviews, inspections, and development impact fees. Licensed ADU specialists in San Francisco can provide a detailed breakdown of these anticipated permit expenses as part of your overall project estimate. They manage the submission process.
What are the best accessory dwelling unit companies in San Francisco?
How do I find ADU services near me in San Francisco?
What is involved in ADU construction in San Francisco?
Can I get financing for an ADU in San Francisco?
Yes, financing for an accessory dwelling unit in San Francisco is often available through various channels. Many homeowners use home equity loans, lines of credit, or refinance their existing mortgage. Some specialized lenders also offer construction loans for ADUs. It's advisable to speak with your bank or a mortgage broker to explore options that suit your financial situation. Licensed ADU professionals can sometimes provide guidance on financing resources available locally.
Are there emergency ADU services in San Francisco?
Also serving nearby: Daly City · Richmond · San Mateo · Berkeley · Oakland
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of San Francisco — population 808,988; about 17,323 residents per square mile across 46.7 sq mi. ZIP codes covered include 94102, 94103, 94104, 94105, 94107, 94108, 94109, 94110.
Neighborhoods served in San Francisco: The Richmond District, The Sunset District, Nob Hill, North Beach, The Mission District, Pacific Heights — and every surrounding area.
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