ADU Crew

6680 Alhambra Avenue, Martinez, CA 94553 28.7 miles

Your Prefab ADU will be delivered and installed to your site. All ready to enjoy a sustainable home to last for generations.

Clarity Construction

111 North Market Street, San Jose, CA 95113 36.1 miles

Clarity Construction is a Bay Area contractor specializing in ADUs, home additions, and remodeling in Sunnyvale, Palo Alto, and South San Francisco. Services include backyard ADU builds, in-law suites, permits, and kitchen remodels.

BuildZig ADU Services

3007 Telegraph Avenue, Oakland, CA 94609 16.1 miles

BuildZig ADU Services is a Bay Area ADU contractor specializing in design, permitting, and construction. They handle garage conversions, detached ADUs, basement/attic conversions, and more, offering transparent pricing throughout.

Larson Shores Architects

1295 Alabama Street, San Francisco, CA 94110 7.8 miles

Licensed 17 years in business Eco-Friendly

Larson Shores Architects is a San Francisco-based firm offering residential, ADU, and commercial design services. Founded in 2007 by Josh Larson, they specialize in new builds, garage conversions, in-law suites, and full permit navigation across t... read more

Adapt Dwellings

5944 Claremont Avenue, Oakland, CA 94618 16.1 miles

Licensed

ADUs add rental income & property value. Services include garage conversions, detached ADUs, JADUs & granny flats. ADU Feasibility Studies cover code, utilities & ROI. Architectural services via Adapt Dwellings ensure smooth approval t... read more

Lion ADU Builders

456 Cavour Street, Oakland, CA 94618 13.4 miles

Lion ADU Builders is an Oakland ADU contractor offering detached ADUs, garage conversions, in-law suites, and custom builds. They manage design, permits, and construction, helping homeowners add space and property value across the Bay Area.

Green Living Builders, LLC

833 Bancroft Way, Berkeley, CA 94710 16 miles

Licensed Eco-Friendly Free Consultation

Green Living Builders LLC is a licensed, bonded Berkeley CA general contractor specializing in ADU construction, garage conversions, home remodels, and new builds across the East Bay. Diamond Certified with deep local expertise.

Top Rated Builders

5450 Thornwood Drive, San Jose, CA 95123 41.3 miles

At Top Rated Builders, we offer expert ADU construction services tailored to meet your specific needs. Whether you’re looking to add a studio ADU, a one-bedroom ADU, or a larger family unit, our experienced team will guide you through the entire... read more

ProStruct Engineering

450 Folsom Street, #1502, San Francisco, CA 94105 9.4 miles

ProStruct Engineering offers ADU structural engineering services across California, providing permit-ready plans and calculations for detached ADUs, garage conversions, granny flats, and more, with a 2–3 week turnaround.

Shed Shop

3201 Diablo Avenue, Hayward, CA 94545 19.2 miles

Turnkey Solutions

Shed Shop offers ADUs (Accessory Dwelling Units) via their Mini Cottage program. Sizes range from 192 to 480 sq. ft. Services include foundation, plumbing, electrical, permits & more. Available in select cities.

Apex Homes

10275 North De Anza Boulevard, Cupertino, CA 95014 31 miles

Licensed Eco-Friendly

prefabADU

1111 Western St, Fairfield, CA CA 94533 48.3 miles

16 years in business Prefab Specialist

prefabADU is a Bay Area ADU builder with 16+ years of experience offering affordable kits and plans from under $45K. With 12 state-approved plans valid across California, they simplify permits, design, and installation for homeowners.

Harmony Design & Development

5880 3rd Street, San Francisco, CA 94124 9.2 miles

Harmony Design & Development builds custom ADUs across the San Francisco Bay Area, including detached units, garage conversions, and in-law suites. They manage permits, design, and construction from start to finish.

Shefer Builder Inc.

585 S Winchester blvd #759, San Jose, CA 95128 34.6 miles

Shefer Builder Inc. offers full-service ADU construction, managing design, permits, and building. Specializing in detached ADUs, granny flats, and in-law suites, they deliver custom accessory dwelling units that boost property value and rental inc... read more

Greenberg Construction

908 Industrial Avenue, Palo Alto, CA 94303 19.8 miles

Eco-Friendly Luxury Builds

Greenberg Construction builds custom ADUs, including detached units & garage conversions. Services include 3D renderings, dedicated project management, eco-friendly options & expert design guidance to add value & living space to your p... read more

Other cities in California

What you need to know

ADU Contractors in South San Francisco: Building in the Industrial City of the Peninsula

South San Francisco, famously known as the "Industrial City" — a title proudly displayed on Sign Hill — is a unique Bay Area community that has evolved far beyond its industrial roots. Today, it is home to a thriving biotech corridor and a growing residential population. With housing demand at an all-time high in San Mateo County, ADU contractors in South San Francisco are playing a critical role in helping homeowners maximize their property potential and address the local housing shortage.

Understanding South San Francisco ADU Regulations

ADU contractors working in South San Francisco must navigate both California state ADU laws and the city's own municipal codes. South San Francisco falls under the jurisdiction of San Mateo County guidelines while also maintaining its own zoning ordinances. Key regulations that experienced ADU builders in South San Francisco must be familiar with include:

Why Hire a Local ADU Contractor in South San Francisco?

Hiring a licensed ADU contractor with local South San Francisco experience is essential. The city's terrain includes hillside lots — particularly near Sign Hill and the areas bordering San Bruno Mountain State Park — which can present unique grading and foundation challenges. A knowledgeable contractor will understand how to handle these site-specific conditions while keeping your project compliant and on budget.

Types of ADUs Commonly Built in South San Francisco

Depending on your property type and goals, skilled South San Francisco ADU contractors can help you build:

The Value of ADUs in South San Francisco's Housing Market

With proximity to San Francisco, the SFO airport corridor, and major biotech employers like Genentech, South San Francisco has consistently strong rental demand. Adding an ADU can significantly increase your property value and generate steady rental income. Working with a reputable ADU contractor in South San Francisco, CA ensures your project meets all local building codes, passes inspections, and is completed efficiently — giving you the best return on your investment.

ADU Contractors near South San Francisco, CA