Jeff Martinez Construction Inc. builds ADUs in Oakley, CA with 27+ years of experience. Services include detached ADUs, garage conversions, permits, finishing, and landscape integration across Contra Costa County.
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LiveLarge Home is a California prefab ADU builder offering full-service solutions from permits to final inspection. Build times start at 4–6 weeks, with fixed pricing from $412/sq. ft. Models range from studios to 2-bed/2-bath units with premium finishes.
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ExpandADU is a California-based prefab ADU builder offering full-service accessory dwelling unit construction, including consultation, design, planning, and build. Serving the Bay Area and beyond, they specialize in detached ADUs, granny flats, and JADUs.
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Bay Villa Builders brings over 50 years of combined experience in crafting expertly designed ADUs that enhance both your home's functionality and its value. An Accessory Dwelling Unit, or ADU, serves as an additional living space on your property.
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Dream Build Services is a full-service ADU contractor in Fremont, CA, offering detached ADUs, garage conversions, basement conversions, and JADUs. Services include design, permits, electrical, plumbing, HVAC, and solar integration across the East Bay.
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JS Design & Build is a full-service ADU builder with the experience to navigate local codes, streamline approvals, and deliver exceptional results. Their in-house team of designers, builders, and project managers ensures seamless communication, consistent quality, and on-time, on-budget completion.
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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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We are a family-first, boutique residential design & build firm serving the Orinda and East Bay community. We’re not just service providers — we’re your neighbors. We understand the local permitting process, the hillside terrain, the fire-hazard restrictions, and the thoughtful planning needed to create homes that truly work for East Bay families.
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At Smith and Son Construction, they 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, they deliver innovative designs, expert craftsmanship, and a stress-free construction experience.
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Roof and Realm is a California-based steel-framed modular home and ADU builder offering fire, earthquake, and wind-resistant structures. Their eco-friendly builds use 98% recyclable materials, generate minimal waste, and support solar-ready, Net Positive energy designs.
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PCI Construction Inc is a trusted ADU contractor offering custom accessory dwelling units, garage conversions, granny flats, and in-law suites. Licensed, bonded, and insured, they handle permitting, design, and construction efficiently.
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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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Barcci Builders specializes in ADU construction across the Bay Area, offering design, permitting, and build services. With 40+ completed units, they handle JADUs, garage conversions, attached, and detached ADUs, with costs ranging from $60K to $400K+.
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Hilario Construction is a Santa Rosa ADU contractor offering full-service accessory dwelling unit construction, including permits, design, and turnkey delivery. Serving Santa Rosa, Windsor, and Petaluma, they build detached ADUs, granny flats, and in-law suites compliant with California ADU laws.
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ADU Builders Group is a Bay Area family-owned ADU contractor with 21+ years of experience. They build attached, detached, converted, and junior ADUs, offering full design-build services, permitting support, a 3-year warranty, and a 10-year structural guarantee.
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.