Intelligent Choice Builders is a licensed Bay Area ADU contractor serving Palo Alto, Cupertino, San Jose & Sunnyvale. They build detached ADUs, garage conversions, granny flats & more, managing permits, design & construction end-to-end.
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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+.
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Edri Construction, Inc. is a Berkeley-based general contractor specializing in ADU construction across the Bay Area. Services include garage conversions, detached ADUs, attached additions, granny flats, and custom interiors, with full project management from permits to finishing.
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DevArt8 Builders specializes in ADU construction in Gilroy, offering floor plans from 350–650 sq. ft. They handle permits, ensure zoning compliance, and build detached ADUs, attached units, and garage conversions tailored to each property.
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E&E General Construction Inc (License #1067263) specializes in ADU construction and garage conversions in Richmond, CA. Services include detached ADUs, attached units, and garage conversions across the Bay Area. Free estimates available.
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ResCom ADU is a full-service ADU builder in Walnut Creek, CA, offering design, permits, engineering, construction & hookups. With 100+ years of combined experience, they deliver custom, cost-effective accessory dwelling units using SIPs & Net-Zero technology.
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ASL Remodeling is a California licensed ADU contractor (CSLB #1060310) with 20+ years experience and 300+ completed projects. Services include detached ADUs, garage conversions, granny flats, JADUs, and in-law suites with full design-build support.
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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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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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AKD Homes is a SF Bay Area ADU contractor with 20+ years of experience. They offer full-service ADU design, permits, and construction, including detached ADUs, granny flats, and custom builds ranging from 400–750 sq. ft.
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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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We guide you through design options and material choices, taking precise measurements to create a custom plan that perfectly fits your property. This careful planning ensures that your new ADU will seamlessly blend with your existing space and meet all your functional needs.
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King David Construction is a Palo Alto ADU contractor offering full-service design, permitting & construction across the Bay Area. Specializing in detached ADUs, garage conversions & in-law suites.
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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 California and New Jersey.
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BuildZig ADU Services is a Bay Area ADU contractor specializing in design, permitting, and construction. They handle garage conversions, detached ADUs, basement/attic conversions, and more, offering transparent pricing throughout.
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.