ADU Contractors near South San Francisco, CA

Home WiP Construction Concierge

171 Main St 261, Los Altos, CA 25.3 miles

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亞華建築YAHUA CONSTRUCTION

650Bfremont Ave, Los Altos, CA 94024 25.1 miles

Licensed 20 years in business Eco-Friendly

YAHUA Construction Inc. is a California-based licensed general contractor with 20+ years of experience. Specializing in ADUs, remodeling, MEP, roofing, and more, they serve the Bay Area with quality, sustainable construction.

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ADU For You

1755 East Bayshore Road, Redwood City, CA 94063 16.2 miles

Luxury Builds

ADU For You is a Bay Area ADU builder based in Redwood City, offering end-to-end services including design, permits, and construction. Serving 1,000+ clients, they specialize in custom detached ADUs, granny flats, and in-law suites at competitive ... read more

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

Barzel Builders

4039 Transport Street, Palo Alto, CA 94303 23.6 miles

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Level House Construction Inc

17332 Keaton Ave, Sonoma, CA 95476 46.3 miles

Level House Construction Inc. builds ADUs in Marin & Sonoma County, CA. Specializing in granny flats, in-law units & backyard cottages, they help homeowners add rental income, family housing & extra living space while boosting property... read more

AKD Homes

3518 Arden Rd, Hayward, CA 94545 17 miles

20 years in business

AKD Homes is a Bay Area ADU contractor with 20+ years of experience. They offer full-service ADU design and build, including detached ADUs, custom designs, and conversions from Berkeley to San Jose.

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Feldman Construction

3392 Georgetown Place, Santa Clara, CA 95051 31 miles

Luxury Builds

Feldman Construction specializes in custom ADU design and construction across the Bay Area, including San Mateo and Santa Clara County. They build detached ADUs, granny flats, and in-law suites to boost property value and expand living space.

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Bobcat Builders

East Palo Alto, CA 94303 19.8 miles

Bobcat Builders is a Bay Area ADU contractor specializing in accessory dwelling units in Palo Alto. They offer attached & detached ADUs, garage conversions, granny flats & in-law suites, backed by a Two Year Satisfaction Guarantee.

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Joy Line Homes

3110 Mission Drive, Capitola, CA 95065 46.1 miles

Prefab Specialist Luxury Builds

Joy Line Homes offers the ADURA ADU Series — factory-built backyard cottages and granny flats featuring modern design, high-end finishes, and durable materials. An affordable, plan-based ADU solution for homeowners seeking quality detached acces... read more

Nestadu

100 Shoreline Highway, Mill Valley, CA 94941 16.5 miles

Luxury Builds

Nestadu is a full-service ADU builder offering custom site-built and prefab accessory dwelling units. Prefab models range from $115K–$317K. Custom builds start at $400/sq ft. Financing options include HELOCs, construction loans, and CA grants.read more

Atra Construction

San Jose, CA 95120 43 miles

Eco-Friendly

Atra Construction is a Bay Area ADU contractor offering full-service design and build. They handle permits, planning, and construction management. Floor plans range from 240 sq ft studios to 1,200 sq ft three-bedroom units.

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Inspired ADUs

1940 Union Street, Oakland, CA 94607 13.3 miles

Licensed 20 years in business

Inspired ADUs is an architect-led ADU design firm serving the Bay Area and Southern California. With 20+ years of experience and 250+ ADUs permitted, they offer custom, panelized, and modular ADU solutions, plus interior design and SB9 lot split s... read more

Masterful Construction

3 3rd Avenue, San Mateo, CA 94401 8.1 miles

Licensed

Masterful Construction is a San Mateo ADU contractor serving the Bay Area. They build detached ADUs, garage conversions, and in-law suites, handling design, permits, and construction. Discounts available for military and first responders.

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Vino Design Build

2405 Laurel Street, Napa, CA 94558 45 miles

Are you considering adding an Accessory Dwelling Unit (ADU) to your property in Napa Valley, California? At Vino Design Build, we specialize in helping homeowners like you design, plan, and construct ADUs that enhance your property’s value and f... read more

Other cities in California

• North Highlands
• Sacramento
• North Hollywood
• Agoura Hills
• Encino
• Los Angeles
• Tarzana
• Long Beach
• Hollywood
• Glendale
• Valley Village
• Pasadena
• Burbank
• Downey
• Beverly Hills

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:

• ADUs are permitted in single-family and multifamily residential zones
• Detached ADUs can be up to 1,200 square feet in size
• Junior ADUs (JADUs) up to 500 square feet are allowed within the existing primary dwelling
• Setback requirements of 4 feet from rear and side property lines for detached ADUs
• Owner-occupancy requirements have been relaxed in line with recent California state law
• Permit applications are processed through the South San Francisco Building Division

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:

1. Detached ADUs — standalone units in the backyard, ideal for rental income
2. Attached ADUs — additions connected to the main home
3. Garage Conversions — converting existing garages into livable space
4. Junior ADUs (JADUs) — interior conversions within the existing home footprint

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.