New Avenue, Inc is a full-service design-build company serving the San Francisco Bay Area and Portland, OR since 2011. They specialize in ADUs, custom homes, renovations, additions, and Enclaves, managing design, permitting, and construction under one roof.
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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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Urban Shore Builders offers full-service ADU design & construction, including garage conversions, detached units & additions. As a turnkey ADU contractor, they handle permits, design & build. Services include plumbing, electrical, HVAC & retaining walls.
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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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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.
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Edri Construction, Inc. is a Mill Valley-based Bay Area ADU contractor offering full-service accessory dwelling unit construction, including garage conversions, detached ADUs, JADUs, and in-law suites, with permit handling and energy-efficient building.
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AK Pahulu Construction, a licensed Bay Area general & concrete contractor since 2015, offers custom homes, ADUs, remodeling, framing & more. Serving Oakland, San Jose, Fremont & beyond. Projects range from $10K–$2M.
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Mountain Top Construction is a Bay Area ADU builder serving San Rafael, San Francisco, and Las Vegas. They specialize in detached ADUs, backyard cottages, granny flats, and in-law suites, managing design, permitting, and construction.
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RWB Construction is a Lafayette, CA-based ADU contractor serving the Bay Area. They build detached ADUs, garage conversions, granny flats & in-law suites, managing design, permitting, and construction from start to finish.
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Whether you’re planning a rental unit, a guest house, or a private suite for family, RenoRevive will help you design and build a fully functional ADU that fits your needs, your lot, and your long-term goals.
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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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Apex Homes is a full-service ADU builder in the South Bay Area, serving Campbell, Palo Alto & South San Jose. They offer detached ADUs, granny flats & in-law suites, with pre-designed floor plans from $185,000.
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GR Innovative Builders Inc. is a Bay Area ADU contractor specializing in accessory dwelling units, granny flats, and in-law suites. Completed projects in Richmond, Oakland, Lafayette & Pinole. Featured in Sunset Magazine.
read moreMill Valley, nestled in the scenic hills of Marin County just north of San Francisco, presents a unique set of challenges and opportunities for ADU contractors. Known for its dense redwood forests, steep terrain, and architecturally distinctive homes, Mill Valley requires experienced ADU professionals who understand the complexities of building on hillside lots, working around mature trees, and complying with both California state ADU laws and the City of Mill Valley's local regulations.
Mill Valley falls under the jurisdiction of the City of Mill Valley Community Development Department, which oversees ADU permitting. While California state law (AB 68, AB 881, and SB 13) has significantly streamlined ADU approvals statewide, Mill Valley still enforces specific local standards that contractors must navigate carefully. Key considerations include:
Given the nature of Mill Valley's existing housing stock — largely single-family homes with garages, basements, or detached structures — the most popular ADU types in the area include:
Selecting a qualified ADU contractor in Mill Valley means finding a professional with demonstrated experience in Marin County's regulatory environment. The right contractor will be familiar with the Mill Valley Building Division, understand fire-safe construction methods, and have relationships with local engineers and arborists. Look for contractors who are licensed by the California Contractors State License Board (CSLB) and who have a proven portfolio of completed ADU projects in hillside communities similar to Mill Valley.
Investing in an ADU in Mill Valley can significantly increase your property's value and provide rental income in one of the most desirable communities in the San Francisco Bay Area. With the right contractor, the process can be smooth, code-compliant, and tailored to the unique character of your Mill Valley property.