DeBrus Construction LLC is a San Francisco general contractor specializing in seismic retrofits, foundation repair, ADU construction, and home remodeling. Led by Malcolm DeBrus, the company handles mandatory soft story retrofits, garage conversions, and full remodels with transparent pricing.
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Backyard Homes is a top ADU builder in Sacramento with 80+ completed units. They offer detached, attached, and conversion ADUs, handling design, permitting, and construction for a seamless experience across the greater Sacramento region.
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Edri Construction, Inc. is a Walnut Creek-based ADU contractor serving the Bay Area. They specialize in garage conversions, detached ADUs, attached additions, in-law suites, and JADUs, handling design, permitting, and project management.
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North Bay ADU & Additions is a trusted ADU builder serving the North Bay area, specializing in accessory dwelling units and home additions. They offer planning, construction, and permit consultation to help homeowners boost property value and rental income.
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ADUs (accessory dwelling units) are self-contained homes on existing properties. California's 2020 laws simplified ADU permits statewide. Alpha ADU Solutions, a San Francisco-based ADU builder with 100+ team members, specializes in granny flats, garage conversions & in-law suites.
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Realty Builders Inc. is a licensed ADU contractor specializing in custom accessory dwelling units, including in-law suites, granny flats, garage conversions & rental units, offering streamlined permitting & guaranteed workmanship.
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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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Edri Construction, Inc. is a San Francisco-based ADU contractor offering full-service accessory dwelling unit construction across the Bay Area, including garage conversions, detached ADUs, granny flats, and energy-efficient home additions with in-house project management.
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Green Living Builders LLC is a licensed, bonded Berkeley CA general contractor specializing in ADU construction, garage conversions, home remodels, and new builds across the East Bay. Diamond Certified with deep local expertise.
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Quality Choice Construction & Painting offers ADU construction services including studio, 1-bedroom, and 2-bedroom units. Options include garage conversions, backyard cottages, and detached ADUs for rental income or multi-generational living.
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Lion ADU Builders is an Oakland ADU contractor offering detached ADUs, garage conversions, in-law suites, and custom builds. They manage design, permits, and construction, helping homeowners add space and property value across the Bay Area.
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Based in Napa and serving St. Helena, Calistoga, and our neighbors in Sonoma, Solano, and Green Valley, we’re a full-service ADU builder with the experience to navigate local codes, streamline approvals, and deliver exceptional results. Our in-house team of designers, builders, and project managers ensures seamless communication, consistent quality, and on-time, on-budget completion.
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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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At Smith and Son Construction, we specialize in designing and building high-quality ADUs in San Leandro, CA. Whether you envision a private guest house, a rental unit, or a home office, we deliver innovative designs, expert craftsmanship, and a stress-free construction experience.
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Type Five is a Berkeley, CA-based ADU builder offering custom backyard cottages, granny flats & in-law suites. They combine modular design, transparent pricing & streamlined construction for stress-free, high-quality detached ADUs built to last.
read moreSonoma, California, is a city steeped in history, known for its iconic Sonoma Plaza — the largest plaza in California — and its position at the heart of one of the world's most celebrated wine regions. Building an Accessory Dwelling Unit (ADU) in Sonoma comes with unique considerations, as contractors must navigate the city's commitment to preserving its historic character while meeting the growing demand for additional housing. Working with experienced ADU contractors in Sonoma, CA is essential to ensure your project aligns with local aesthetics, zoning requirements, and state regulations.
ADU construction in Sonoma is governed by both California state law and the City of Sonoma's local ordinances. Under California's updated ADU laws (AB 68, SB 13, and related legislation), homeowners have expanded rights to build ADUs and Junior ADUs (JADUs) on their properties. However, Sonoma's local planning department enforces specific guidelines that contractors must follow:
Hiring a local ADU contractor in Sonoma means working with professionals who understand the nuances of building in Wine Country. Local contractors are familiar with the City of Sonoma's permit process, the planning department's expectations, and the architectural styles that complement the area's historic and rural character. They can help streamline the permitting process, which typically involves submitting plans to the City of Sonoma Community Development Department for review and approval.
Experienced ADU contractors in Sonoma can assist with a variety of ADU types suited to the area's property styles:
Whether you're looking to create rental income, house extended family, or increase your property value, building an ADU in Sonoma is a smart investment. Connect with a qualified ADU contractor in Sonoma, California who can guide you through design, permitting, and construction — ensuring your project meets all local and state requirements while honoring the charm of this historic Wine Country city.