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 & ... read more
Bay Harbor Remodeling & Construction is a licensed Bay Area contractor with 25+ years of experience. Services include kitchen & bathroom remodeling, ADU conversions, roofing, decks, and more across 50+ California cities.
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Mola Construction is a trusted ADU builder in San Jose with 20+ years of experience. They offer custom ADUs, kitchen remodels, home additions, and full remodeling services across the Bay Area, ensuring California code compliance.
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Greenberg Construction builds custom ADUs, including detached units & garage conversions. Services include 3D renderings, dedicated project management, eco-friendly options & expert design guidance to add value & living space to your p... read more
SF Bay ADU is a full-service Bay Area ADU contractor offering design, permitting, and construction for units from 600–1,200 sq ft. Options include studio, 2bed/2bath, garden cottage, and in-law suites for rental income or multigenerational livin... read more
Decor Builders is a San Jose-based ADU contractor with 15+ years of Bay Area experience. They offer full-service ADU design and construction, including granny flats and in-law suites, handling permits, engineering, and project management.
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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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Sigura Construction, Inc. builds ADUs & garage conversions in Silicon Valley. Licensed, A+ BBB rated, Diamond Certified 18+ years. Serving Menlo Park, Palo Alto, Atherton & more. Free estimates available.
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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 t... read more
Excellent Home Remodeling offers professional home addition services in Sonoma, helping homeowners expand living spaces, add bedrooms, bathrooms, home offices, or in-law suites. They handle planning and execution tailored to each property's needs.... read more
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-... read more
ADBC Architecture completed an 800 SF detached ADU in East Bay, CA in 2025, designed for multigenerational living. Built with thermally modified wood and steel, the backyard cottage features high ceilings and large windows for a spacious feel.
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Bao-Tran Builders Inc specializes in ADU construction, including detached ADUs, granny flats, JADUs, garage conversions & multi-unit properties. Expert ADU contractor delivering functional, high-quality housing solutions for property owners.read more
SOD Home Group builds attached & detached ADUs, including granny flats, in-law suites, garage conversions & backyard cottages. Licensed ADU contractor (Lic. 942085) helping homeowners expand living space efficiently.
read moreHalf Moon Bay, nestled along the stunning San Mateo County coastline, presents a unique set of challenges for ADU contractors. Much of the city falls within the California Coastal Zone, which means that accessory dwelling unit projects may require not only standard local permits but also a Coastal Development Permit (CDP) issued in compliance with the California Coastal Act. Experienced ADU contractors in Half Moon Bay understand how to navigate these additional regulatory layers, ensuring your project moves forward without costly delays.
Half Moon Bay follows California state ADU law while also enforcing its own Municipal Code and Local Coastal Program (LCP). Homeowners in residential zones such as R-1 and R-2 are generally permitted to build ADUs, but contractors must carefully review setback requirements, lot coverage limits, and height restrictions that can vary by parcel. The city typically allows ADUs up to 1,200 square feet for detached units, and Junior ADUs (JADUs) up to 500 square feet within existing primary structures. Key considerations include:
Working with an ADU contractor experienced in Half Moon Bay is essential due to the city's complex regulatory environment. A knowledgeable contractor will handle the permitting process with the City of Half Moon Bay Community Development Department, coordinate with the California Coastal Commission when necessary, and ensure your ADU meets all building codes including seismic safety standards relevant to this coastal region. Attempting to manage these requirements without professional guidance can result in permit denials, project delays, and significant financial setbacks.
Given the character of Half Moon Bay's residential neighborhoods — many featuring larger lots with existing single-family homes — the most popular ADU types include:
Half Moon Bay's desirable location along the San Mateo County coast means that a well-built ADU can command strong rental rates and significantly increase property value. By partnering with a licensed, local ADU contractor who understands the city's coastal regulations, zoning codes, and construction environment, homeowners can confidently move from concept to completed unit — and start enjoying the financial and lifestyle benefits of their new accessory dwelling unit.