Mana Construction Inc

531 Ridge Ave, Vallejo, CA 94591 31.5 miles

Joy Line Homes

3110 Mission Drive, Capitola, CA 95065 46.1 miles

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 accessory dwelling units.

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.

Eco Scale Construction

Sunnyvale, CA 94085 28.9 miles

Eco Scale Construction builds ADUs in Sunnyvale, Los Altos & Palo Alto, CA. Services include detached ADUs, garage conversions & JADUs. Costs range from $80K–$400K+. Fully compliant with California ADU regulations.

ENE Smarthome, Inc.

690 Saratoga Avenue, San Jose, CA 95129 33.6 miles

ENE Smarthome, Inc. is a Bay Area contractor offering home remodeling, ADU construction, smart home upgrades, and accessibility improvements. Services include garage conversions, granny flats, aging-in-place remodels, and SB9-compliant ADU projects.

Dream Build Services

3654 Thornton Ave, Fremont, CA 94536 23.3 miles

Eco-Friendly

Dream Build Services is a full-service ADU contractor in Fremont, CA, offering detached ADUs, garage conversions, basement conversions, and JADUs. Services include design, permits, electrical, plumbing, HVAC, and solar integration across the East Bay.

Design and Construction by M&M

100 South Murphy Ave STE 200, Sunnyvale, CA 94086 28.7 miles

Bay Area general contractor Design and Construction by M&M specializes in ADUs, remodeling, room additions, and custom builds. Serving Burlingame, Los Altos, and Campbell, they manage design, permitting, and construction. Free consultations available.

Todd Jersey Architecture

1321 Eighth Street, Berkeley, CA 94710 16.6 miles

30 years in business Eco-Friendly

Todd Jersey Architecture (TJA) is a Berkeley-based sustainable design firm serving the SF Bay Area. Specializing in ADUs, remodels, new homes & historic preservation, TJA combines 30+ years of experience with a performance-driven, eco-conscious approach.

Quartz Construction

1777 Hamilton Avenue, San Jose, CA 95125 37.1 miles

Quartz Construction builds ADUs in San Jose, including detached units, garage conversions, and in-law suites. ADUs offer extra space, passive rental income, and multigenerational living solutions for Bay Area homeowners.

Valley Boutique Builders

153 2nd Street, Los Altos, CA 94022 25.1 miles

Licensed Eco-Friendly Luxury Builds

Valley Boutique Builders is a licensed Bay Area ADU contractor offering full-service accessory dwelling unit construction, custom home additions, kitchen and bathroom remodeling, and new construction with free initial consultations.

Home Quality Remodeling

1070 Concord Avenue, Concord, CA 94520 29.8 miles

Licensed 20 years in business Free Consultation

Home Quality Remodeling Inc. is a licensed Bay Area general contractor (CSLB #838832) with 20+ years of experience. Services include kitchen & bathroom remodeling, room additions, ADUs, and outdoor living across Concord, San Jose, and Paramus, NJ.

Palo Alto ADU Solutions

2590 Marshall Drive, Palo Alto, CA 94303 21.9 miles

Custom ADU builders in Palo Alto, CA, specializing in granny flats, detached ADUs & backyard cottages. Personalized design, permitting, and full construction management for quality accessory dwelling units.

UDA ADU

Palm Avenue, Los Altos, CA 94022 25.7 miles

UDA ADU is a California ADU contractor specializing in detached ADUs, garage conversions, JADUs, and in-law suites. They handle design, permitting, and construction, offering homeowners a streamlined, full-service ADU building experience.

Custom Home

2092 Concourse Drive, San Jose, CA 95131 34.1 miles

Licensed 21 years in business

Custom Home is a Bay Area ADU contractor (CSLB #986048) with 160+ projects since 2005. They build detached, attached, junior ADUs & garage conversions across South Bay & Peninsula, with costs from $120K–$500K+.

J&A BUILDERS INC

99 South Almaden Avenue, San Jose, CA 95113 36.8 miles

Eco-Friendly

J&A Builders Inc serves San Jose & the Bay Area with residential construction, remodeling, ADUs, second floor additions & garage conversions. Services include kitchen, bathroom, whole-home remodels & granny flats.

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