Accessory dwelling unit builders near me

Looking for accessory dwelling unit builders near me in San Francisco, CA? Call AccessoryDwellingUnit Solutions 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 several moving parts that shape your total budget. The biggest factor is whether you choose a prefabricated unit or a custom build on-site. Site preparation is also significant; if your land requires extensive grading, utility trenching, or foundation work, costs will climb. Your choice of finishes—like kitchen cabinetry, flooring, and siding materials—also shifts the bottom line. We help you navigate these variables to find a setup that fits your property. Exact pricing confirmed free on the call.

About this service

Local builders provide the labor and project management needed to turn an empty backyard space into a functional living area. You need them when you have a vision for a guest house or rental but need a team familiar with your specific regional climate and local building department inspectors. Hiring nearby crews often simplifies logistics and ensures that your builder has established relationships with local supply houses and inspectors.

Frequently asked in San Francisco

What are the disadvantages of ADUs in San Francisco?

Disadvantages in San Francisco might include the high upfront construction costs due to urban density and labor. Permitting can also be complex and time-consuming. You'll also need to consider ongoing maintenance. However, the potential for significant property value increase and rental income often outweighs these challenges. A local builder can guide you through this.

How much does an ADU cost in California?

What are the rules for ADUs in California?

California has state laws to streamline ADU development, but San Francisco has its own specific zoning and building codes. These often include strict requirements for setbacks, height, and integration with existing structures. Understanding these local rules is critical for a successful build. A local ADU specialist will be knowledgeable in these areas.

Is ADU allowed in Maryland?

This information is for San Francisco, California. Maryland has its own unique set of regulations for accessory dwelling units, which differ from California's laws. For accurate information on ADU rules in Maryland, you should consult with local authorities or ADU professionals within that state.

For current information on ADU grants applicable to San Francisco, it's best to research recent state and local initiatives. A local ADU builder can help you explore potential funding opportunities.

What are the rules for ADU in California?

California has state laws designed to facilitate ADU construction, but San Francisco enforces its own stringent local ordinances. These regulations cover everything from lot coverage and height limits to fire safety and accessibility. Ensuring compliance is vital for a smooth permitting process. A local builder will be an expert in these rules.

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: Sunset District, Richmond District, The Castro, Nob Hill, Mission District — and every surrounding area.