Bao-Tran Builders Inc specializes in ADU construction, including detached ADUs, granny flats, JADUs, garage conversions & multi-unit properties. Expert ADU contractor delivering functional, high-quality housing solutions for property owners.read more
Epic Modulars delivers fast, flexible, and customizable solutions for homes and ADUs. Their manufactured homes and ADUs are built in controlled factory environments, ensuring superior quality, faster timelines, and predictable costs.
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Your Prefab ADU will be delivered and installed to your site. All ready to enjoy a sustainable home to last for generations.
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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.
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YCD Studio is a Bay Area architecture firm specializing in ADU design and permits in Moraga and the Lamorinda area. Services include detached ADUs, garage conversions, and JADUs, with expertise in WUI standards and local fire district requirements... read more
Clever Design & Remodeling builds ADUs across the San Francisco Bay Area, including garage conversions, attached, detached, and junior ADUs. Services cover permits, construction, interior design, and landscaping. Average ADU cost is ~$145,000.... read more
Tiny House Basics designs custom tiny house trailers with insulated floors, no thermal bridging, and build-ready delivery. Models range from 10–50ft, up to 12ft wide, in bumper pull or gooseneck styles. Lifetime consulting included.
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Colibri Kitchen & Bath offers full-service ADU construction in Oakland, handling design, permitting, and building. Services include site assessment, architectural plans, 3D renderings, and complete construction from foundation to finishing.read more
Mendez and Son's Construction is a Bay Area ADU contractor offering design-build services in Palo Alto, Mountain View, San Mateo & Walnut Creek. They handle detached ADUs, garage conversions & JADUs, managing permits to final inspection.read more
NorCal ADU Builders is a California-based full-service ADU contractor handling planning, permits, Title 24 compliance, and construction—including foundation, framing, roofing, plumbing, and interior finishes—for detached ADUs, garage conversio... read more
Kaplan Architects added a 280 sq ft ADU to an existing garage in Crocker Highlands, Oakland. Built into a hillside, it features a kitchenette, full bath, and Tudor-style exterior, serving as office, studio, or rental unit.
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Soliz General Construction & Painting Inc is a Bay Area ADU contractor with 20+ years of experience. They offer full-service ADU design and construction, including permits, structural work, and finishing for granny flats, in-law suites, and ba... read more
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
LRL Builders, Inc. is a licensed ADU contractor in Walnut Creek, CA, specializing in detached, attached, garage conversion, and junior ADUs. They handle design, permitting, and construction, serving Walnut Creek and surrounding Bay Area communitie... read more
Tucan Builder is a family-owned general contractor in Redwood City, CA, serving San Mateo County. Specializing in ADU construction, room additions, kitchen remodeling, and home renovations, they bring 30+ years of combined experience.
read moreSouth 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.
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:
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.
Depending on your property type and goals, skilled South San Francisco ADU contractors can help you build:
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.