Vitalize Build is a Bay Area ADU contractor offering design and construction services for detached ADUs, garage conversions, and in-law suites. They provide preapproved, predesigned, and custom layouts ranging from 238 to 1,200 sq ft.
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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 the Bay Area.
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CDU Inc. offers expert ADU construction & remodeling in the Greater Bay Area. Services include new builds, garage conversions, electrical, plumbing & custom design to boost property value & functionality.
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Jeff Martinez Construction Inc. builds ADUs in Oakley, CA with 27+ years of experience. Services include detached ADUs, garage conversions, permits, finishing, and landscape integration across Contra Costa County.
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Step-up Construction is a San Jose ADU contractor specializing in garage conversions, attached additions, and detached backyard ADUs. Costs range from $80K to $475K. They guide homeowners through permits, zoning, and San Jose's ADU regulations.
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Jaws Construction Services builds ADUs, garage conversions, and JADUs. They handle permits, HOA coordination, and offer site-built or prefab options. East Bay ADUs rent for $1,500–$3,500+/month, potentially boosting property value.
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Eano offers custom on-site ADU design and build services, handling permits, construction, and financing. Their app tracks progress in real time. Licensed pros average 10+ years experience. Flexible 0% interest financing options available.
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Manzanita Design Build is an East Bay ADU contractor specializing in accessory dwelling units. Serving Berkeley, Oakland, Alameda & more. New ADU construction starts ~$300K, 5–8 month build time. Licensed (#1034108) & insured.
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Metricon Homes offers ADU construction and garage conversion services. Choose from 5 sizes: Marigold, Camellia, Magnolia, Dahlia, and Sunflower. Their Design to Doorstep process covers custom design to completion. Licensed contractor: Tobin Brinker, License #1128717.
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Alon Design & Remodeling is a leading ADU contractor offering detached, attached, garage conversion, basement, and JADU options. ADUs boost property value, generate rental income, and provide independent living spaces with full amenities.
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Vargas Construction is a California ADU contractor offering detached, attached, garage, junior, and multifamily ADUs. They handle design, permitting, and construction with energy-efficient materials, custom interiors, and full amenities in 2–6 months.
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Collins Remodeling is a licensed ADU contractor in Alameda, CA, specializing in detached ADUs, garage conversions, JADUs, and granny flats. They manage permitting, design, and construction, helping homeowners add value and rental income.
read moreSan Francisco is one of the most densely populated cities in the United States, with a severe housing shortage that has made Accessory Dwelling Units (ADUs) a critical solution for homeowners looking to add living space or generate rental income. The city's unique topography, historic Victorian and Edwardian architecture, and strict local zoning laws make working with experienced ADU contractors in San Francisco absolutely essential. Unlike many other California cities, San Francisco has its own set of layered regulations that go beyond state ADU laws, requiring contractors who are deeply familiar with local codes.
San Francisco has embraced ADU development in response to its housing crisis, but the permitting process remains complex. Skilled San Francisco ADU contractors must navigate requirements set by the San Francisco Planning Department and the Department of Building Inspection (DBI). Key regulatory considerations include:
Due to the city's dense urban fabric and existing building stock, the most common ADU types built by San Francisco ADU contractors include garage conversions, basement conversions, and internal unit splits. Detached ADUs are less common given the limited lot sizes typical of San Francisco properties. Many homeowners in neighborhoods like the Sunset, Richmond, and Mission Districts are converting underutilized garages or ground-floor spaces into fully permitted rental units.
Hiring a contractor with proven experience in San Francisco ADU projects can save homeowners significant time and money. Local contractors understand the nuances of working with the DBI, managing neighbor notifications, and coordinating with utility providers like PG&E and SFPUC. They are also familiar with the city's ADU pre-approved plans program, which can accelerate permit timelines considerably.
With San Francisco's housing demand showing no signs of slowing, investing in an ADU remains one of the smartest moves a property owner can make. Partnering with a knowledgeable ADU contractor in San Francisco ensures your project is completed efficiently, legally, and to the highest standard.