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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Apex ADU Builders is a Los Angeles-based contractor specializing in accessory dwelling unit construction. Services include new builds, garage conversions, permitting, and design. Costs range from $80K–$400K, with potential ROI 35% higher than homes without ADUs.
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Crane Construction is a licensed Bay Area general contractor based in Walnut Creek, CA. They specialize in design-build projects, ADUs, garage conversions, remodeling, and new construction for residential and commercial clients. Free estimates available.
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HDR Remodeling is a Bay Area Design Build firm since 1987, specializing in kitchen remodels, bathroom renovations, and home improvements across Oakland, Berkeley, Alameda, and the East Bay, backed by an experienced team of architects and designers.
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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.
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Anura Design specializes in ADU design, offering styles from modern farmhouse and contemporary steel to Mediterranean stucco. Their interiors feature open-concept layouts, natural wood tones, and refined finishes tailored to compact, functional living spaces.
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Deharo Construction is a trusted ADU builder serving Livermore, Pleasanton, and Dublin. Specializing in accessory dwelling units, new construction, and home additions, they deliver custom granny flats, detached ADUs, and in-law suites across the Tri-Valley area.
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ELS Home Builders specializes in ADU design and construction across San Jose, Palo Alto & the SF Bay Area. Services include granny flats, in-law suites, garage conversions & detached ADUs for multigenerational living.
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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.
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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.
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Eagle ADU is a licensed ADU builder in Northern California offering three signature models: Eagle Studio ($180K–$220K), Eagle One ($230K–$280K), and Eagle Two ($310K–$360K), with rental income potential up to $4,000/month.
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Bay Villa Builders brings over 50 years of combined experience in crafting expertly designed ADUs that enhance both your home's functionality and its value. An Accessory Dwelling Unit, or ADU, serves as an additional living space on your property.
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Geico Builders offers ADU services including detached ADUs, attached ADUs, Junior ADUs, garage conversions, and home additions. Ideal for rental income, family housing, or maximizing space on your existing property.
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Element Homes is a California ADU contractor offering full-service design, permitting, and construction. They build detached ADUs, garage conversions, and in-law suites across the Bay Area, with in-house teams, warranties, and free estimates.
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Bay Area Home Remodelers builds ADUs in Daly City, San Francisco & San Jose. Services include garage conversions, granny flats, JADUs & detached units. Full project support from permits to completion.
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.