ADU Contractors near Martinez, CA
Valley Home Builders inc.
3466 Edward Avenue, Santa Clara, CA 95054
45.7 miles
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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DSA Architects
1107 Virginia Street, Berkeley, CA 94702
12.5 miles
DSA Architects designed an 850 sq. ft. second-floor ADU in Berkeley Hills for multi-generational living. Features 2 beds, 1 bath, open layout, Tilden Park views, roof deck, solar PV, heat pumps, and gray-water system.
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AK Pahulu Construction
1353 B Street, Hayward, CA 94541
22.2 miles
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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Metricon Homes
2010 Crow Canyon Road, Suite 100, San Ramon, CA 94583
17 miles
Metricon Homes offers ADU construction and garage conversion services. Choose from 5 sizes: Marigold, Camellia, Magnolia, Dahlia, and Sunflower. Their Design to Doorstep process covers custom design to completion. Licensed contractor: Tobin Brinker, License #1128717.
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Kaplan Architects
49 Zoe Street, San Francisco, CA 94107
21.5 miles
Kaplan Architects added a 280 sq ft ADU to an existing garage in Crocker Highlands, Oakland. Built into a hillside, it features a kitchenette, full bath, and Tudor-style exterior, serving as office, studio, or rental unit.
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Ingenious General Construction
2890 North Main Street, Walnut Creek, CA 94597
5.8 miles
Ingenious General Construction is a BBB-certified, licensed contractor in Walnut Creek, CA, serving the East Bay. With 20 years of experience, they offer ADUs, kitchen & bathroom remodeling, home additions, pool construction, and landscaping.
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YCD Studio
424 Treat Avenue, San Francisco, CA 94110
23 miles
YCD Studio is a Bay Area architecture firm specializing in ADU design and permits in Moraga and the Lamorinda area. Services include detached ADUs, garage conversions, and JADUs, with expertise in WUI standards and local fire district requirements.
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S.D White Construction Inc
1151 Hensley Street, Richmond, CA 94801
14.1 miles
S.D White Construction Inc, a licensed Bay Area ADU contractor with 20+ years experience, builds detached, attached, garage conversion & above-garage ADUs in Richmond, CA. Full-service from design & permits to final inspection, completed in 3–5 months.
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Decor Builders
800 Charcot Avenue, San Jose, CA 95131
43.8 miles
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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Inspired ADUs
1940 Union Street, Oakland, CA 94607
15.7 miles
Inspired ADUs is an architect-led ADU design firm serving the Bay Area and Southern California. With 20+ years of experience and 250+ ADUs permitted, they offer custom, panelized, and modular ADU solutions, plus interior design and SB9 lot split services.
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Home by Tom
1990 North California Boulevard, Walnut Creek, CA 94596
6.9 miles
Home by Tom is a Bay Area ADU contractor with 21+ years of experience serving Walnut Creek. They build detached ADUs, attached ADUs, and garage conversions, managing design, permits, and construction for rental income or multi-generational living.
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Barzel Builders
4039 Transport Street, Palo Alto, CA 94303
39.6 miles
Eco Scale Construction
Sunnyvale, CA 94085
42.7 miles
Eco Scale Construction builds ADUs in Sunnyvale, Los Altos & Palo Alto, CA. Services include detached ADUs, garage conversions & JADUs. Costs range from $80K–$400K+. Fully compliant with California ADU regulations.
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Build My Casita
652 Gilman Street, Palo Alto, CA 94301
38.3 miles
Alon Design & Remodeling
722 Charcot Avenue, San Jose, CA 95131
43.8 miles
Alon Design & Remodeling is a leading ADU contractor offering detached, attached, garage conversion, basement, and JADU options. ADUs boost property value, generate rental income, and provide independent living spaces with full amenities.
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Other cities in California
What you need to know
ADU Contractors in Martinez, CA: Building in the Heart of Contra Costa County
Martinez, the county seat of Contra Costa County, is a historic waterfront city with a rich architectural heritage and a growing demand for additional housing. As housing costs continue to rise throughout the Bay Area, ADU contractors in Martinez, California are playing a vital role in helping homeowners maximize their property value and create additional living space. With its mix of Victorian-era homes, craftsman bungalows, and mid-century properties, Martinez presents unique opportunities and challenges for ADU construction professionals.
Understanding Martinez ADU Regulations and Permitting
Before breaking ground on an accessory dwelling unit in Martinez, homeowners and contractors must navigate the city's specific zoning and building codes. Martinez follows California state ADU law while also enforcing its own local guidelines. Key regulatory considerations include:
- Zoning compliance: ADUs are generally permitted in single-family and multifamily residential zones throughout Martinez.
- Size limitations: Detached ADUs can be up to 1,200 square feet, while attached ADUs are typically limited to 50% of the primary dwelling's square footage.
- Setback requirements: A minimum 4-foot rear and side setback is required for most new detached ADUs.
- Historic district considerations: Some areas of Martinez fall within historic overlay zones, requiring additional design review to preserve the city's architectural character.
- Parking requirements: In many cases, replacement parking is not required when a garage is converted into an ADU.
Types of ADUs Built by Martinez Contractors
Experienced ADU builders in Martinez, CA are skilled in constructing a variety of unit types to suit different property layouts and homeowner needs. The most common ADU types in the area include:
- Detached ADUs: Standalone structures built in the backyard, ideal for larger lots common in Martinez's residential neighborhoods.
- Garage Conversions: Transforming existing garages into livable space, a popular and cost-effective option.
- Attached ADUs: Units added directly to the existing home, sharing at least one wall with the primary structure.
- Junior ADUs (JADUs): Units up to 500 square feet created within the existing footprint of a home.
Why Hire a Local ADU Contractor in Martinez?
Working with a licensed ADU contractor familiar with Martinez ensures your project moves smoothly through the city's Building and Planning Department. Local contractors understand the nuances of building on hillside lots, working near the Carquinez Strait waterfront, and dealing with the region's seismic requirements. They also have established relationships with local inspectors and subcontractors, which can significantly reduce project timelines and costs.
Whether you're looking to generate rental income, house a family member, or increase your property's resale value, investing in an ADU in Martinez, California is a smart long-term decision. Contact a qualified local ADU contractor today to start planning your project.