At ADU San Mateo, we combine architectural insight, construction experience, and deep knowledge of Bay Area zoning laws to deliver high quality accessory dwelling units from design through move in. Our mission is simple: to make building your ADU clear, fast, and stress free.
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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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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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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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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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The ADU Dudes is a Bay Area & Northern California ADU contractor offering ADU construction, JADUs, garage conversions, home additions & new builds. Licensed under San Andres Construction (#1081083), serving San Jose, Oakland, Fremont & more.
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We Do Construction specializes in ADU garage conversions across the San Francisco Bay Area. Licensed and insured, they handle permitting, 3D planning, construction, and interior design, offering free estimates for homeowners.
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Valley Home Builders Inc. is a Silicon Valley design-build contractor serving Santa Clara & San Mateo Counties. Founded in 2005, they specialize in kitchen remodeling, ADU construction, and home renovations across San Jose, San Mateo & beyond.
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Manzanita Design Build is an East Bay ADU contractor specializing in accessory dwelling units. Serving Berkeley, Oakland, Alameda & more. New ADU construction starts ~$300K, 5–8 month build time. Licensed (#1034108) & insured.
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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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Done Right Builders & Remodeling is a licensed Bay Area ADU contractor (Lic#1002689) with 20+ years experience. Services include detached/attached ADUs, JADUs & garage conversions in Union City, Hayward, San Jose & Santa Clara.
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Spruce ADU Builders is a licensed ADU contractor in Union City offering expert accessory dwelling unit construction. Services include granny flats, in-law suites, and custom ADUs with free consultations, transparent pricing, and a 100% satisfaction guarantee.
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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.
read moreNewhall is one of the oldest and most historically rich communities within the City of Santa Clarita, California. Known for its charming Old Town district and its roots in the early California oil industry, Newhall presents a unique backdrop for Accessory Dwelling Unit (ADU) construction. Homeowners in Newhall looking to add an ADU must work with experienced ADU contractors familiar with Santa Clarita's specific building codes and the character-sensitive nature of this historic neighborhood.
Since Newhall falls under the jurisdiction of the City of Santa Clarita, all ADU projects must comply with Santa Clarita's ADU ordinance, which aligns with California state law (AB 68, SB 9, and related legislation). Key regulatory considerations include:
Working with a licensed ADU contractor experienced in Newhall and the greater Santa Clarita Valley is essential for a smooth permitting and construction process. The City of Santa Clarita's Building and Safety Division oversees all permit applications, inspections, and approvals. A knowledgeable contractor will handle:
Newhall's mix of older single-family homes and newer developments makes it suitable for a variety of ADU types. Garage conversion ADUs are particularly popular given the existing structures on many properties. Detached backyard cottages and Junior ADUs (JADUs) converted from existing interior spaces are also common choices for homeowners looking to add rental income or multigenerational living space.
Whether you're looking to generate rental income, house family members, or increase your property value, hiring a qualified ADU contractor in Newhall, CA is the first step. Make sure your contractor is licensed by the California Contractors State License Board (CSLB) and has verifiable experience with local Santa Clarita permitting processes.