MTR (Modern Technology Resources Inc.) offers full-service ADU design and construction in Sacramento, CA. Services include custom builds, garage conversions, permit management, and prefab options—helping homeowners add value with functional, affordable accessory dwelling units.
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At Gadi Construction, they design and build Accessory Dwelling Units (ADUs) that maximize your property’s potential. Whether you want extra income through rental space, a private guest suite, or a comfortable home office, their ADU construction services make it possible.
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NorCal ADU Builders is a California-based full-service ADU contractor handling planning, permits, Title 24 compliance, and construction—including foundation, framing, roofing, plumbing, and interior finishes—for detached ADUs, garage conversions, and backyard cottages.
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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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Northbay Home Solutions offers full-service ADU construction in San Rafael, San Francisco & North Bay. Services include detached ADUs, garage conversions & JADUs, covering design, permits & build.
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Element Homes is a California ADU contractor offering full-service design, permitting, and construction. They build detached ADUs, garage conversions, and in-law suites across the Bay Area, with in-house teams, warranties, and free estimates.
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Bay Builders & Remodeling specializes in custom ADU construction across Santa Clara, San Mateo, and East Bay. Services include attached, detached, garage conversions, and JADUs, helping homeowners add rental income, family housing, or workspace.
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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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UDA ADU is a California ADU contractor specializing in detached ADUs, garage conversions, JADUs, and in-law suites. They handle design, permitting, and construction, offering homeowners a streamlined, full-service ADU building experience.
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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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Realty Builders Inc. is a licensed ADU contractor specializing in custom accessory dwelling units, including in-law suites, granny flats, garage conversions & rental units, offering streamlined permitting & guaranteed workmanship.
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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.
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J.A. Mejia Construction is a licensed ADU builder & home addition contractor in Sonoma County & the Bay Area. Services include detached ADUs, garage conversions, in-law suites & second-story additions in Santa Rosa, Petaluma & beyond.
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Todd Jersey Architecture (TJA) is a Berkeley-based sustainable design firm serving the SF Bay Area. Specializing in ADUs, remodels, new homes & historic preservation, TJA combines 30+ years of experience with a performance-driven, eco-conscious approach.
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Shefer Builder Inc. offers full-service ADU construction, managing design, permits, and building. Specializing in detached ADUs, granny flats, and in-law suites, they deliver custom accessory dwelling units that boost property value and rental income.
read moreMartinez, 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.
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:
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:
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.