Accessory dwelling unit contractor

Looking for accessory dwelling unit contractor in San Francisco, CA? Call AccessoryDwellingUnit Direct for a contact a provider — no obligation. Licensed adu builders serve San Francisco and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Building an ADU involves variables that shift your total investment. The footprint size and complexity of the architectural design are primary factors. Are you planning a detached unit that requires new utility trenching, or is this a garage conversion that uses existing plumbing? Site accessibility, soil conditions, and your choice of finishes—like luxury flooring versus standard options—also play significant roles. Permitting fees vary widely depending on your local municipality and current zoning requirements. Exact pricing confirmed free on the call.

About this service

A contractor oversees the physical construction, managing the subcontractors, materials, and daily site operations. You need a contractor when you have your designs finalized and are ready to transition into the building phase. They ensure the foundation is poured correctly, the framing is solid, and the utilities are hooked up safely. A good contractor acts as your primary point of contact, keeping the work on schedule while maintaining high standards of quality for your new dwelling.

Frequently asked in San Francisco

What are the disadvantages of ADUs in San Francisco?

In San Francisco, potential disadvantages of ADUs can include the high initial construction costs and the impact on limited yard space. You may also see an increase in utility bills. Understanding these factors is crucial for a successful project. A quick call can help you weigh these points.

How much does an ADU cost in California?

The cost of an ADU in California, including San Francisco, varies greatly depending on size, materials, and site conditions. Factors like foundation type, finishes, and whether you're building a detached or attached unit all play a role. It's best to get a personalized quote tailored to your specific project needs and location within San Francisco.

What are the rules for ADUs in California?

California has state-level laws encouraging ADU development, but San Francisco has its own specific ordinances regarding setbacks, height limits, and parking. These rules are designed to ensure ADUs integrate well into neighborhoods like the Mission. We can help you understand how these regulations apply to your specific situation.

Is an ADU allowed in Maryland?

California has offered various grant and financing programs to help homeowners build ADUs, though specific program details and availability can change. These programs aim to make ADUs more accessible. While we don't manage grants directly, understanding your project's scope can help you identify potential funding avenues. Let's discuss your project first.

What are the rules for ADUs in California?

California has state-level laws encouraging ADU development, but San Francisco has its own specific ordinances regarding setbacks, height limits, and parking. These rules are designed to ensure ADUs integrate well into neighborhoods like the Castro. We can help you understand how these regulations apply to your specific situation.

Also serving nearby: Daly City · Richmond · San Mateo · Berkeley · Oakland

All cities in California →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

808,988residents

17,323per sq mile

8ZIP codes served

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 Mission, Sunset District, Richmond District, Haight-Ashbury, The Castro, Nob Hill — and every surrounding area.