Deharo Construction is a trusted ADU builder serving Livermore, Pleasanton, and Dublin. Specializing in accessory dwelling units, new construction, and home additions, they deliver custom granny flats, detached ADUs, and in-law suites across the Tri-Valley area.
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Green Living Builders LLC is a licensed, bonded Berkeley CA general contractor specializing in ADU construction, garage conversions, home remodels, and new builds across the East Bay. Diamond Certified with deep local expertise.
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Gordon Reese Design Build is a licensed ADU contractor in Walnut Creek, CA, with 41+ years of experience. They offer custom ADU design and construction, 3D renderings, transparent pricing, serving the Bay Area including Danville, Lafayette & Concord.
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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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Element Home Remodeling is a Mountain View ADU contractor offering full design-build services in Silicon Valley. They specialize in garage conversions, backyard cottages, in-law suites & rental units, serving Palo Alto, Sunnyvale & San Jose.
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Quartz Construction builds ADUs in San Jose, including detached units, garage conversions, and in-law suites. ADUs offer extra space, passive rental income, and multigenerational living solutions for Bay Area homeowners.
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Bobcat Builders is a Bay Area ADU contractor specializing in accessory dwelling units in Palo Alto. They offer attached & detached ADUs, garage conversions, granny flats & in-law suites, backed by a Two Year Satisfaction Guarantee.
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Elite Construction builds ADUs in Santa Cruz County, offering detached units, garage conversions & addition ADUs. Projects range 250–1,200 sq ft, cost $115K–$450K, and take 6–9 months. Free estimates available.
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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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Atra Construction is a Bay Area ADU contractor offering full-service design and build. They handle permits, planning, and construction management. Floor plans range from 240 sq ft studios to 1,200 sq ft three-bedroom units.
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AK Builders Inc is a White Salmon, WA contractor serving the Columbia River Gorge. They offer new home builds, remodels, ADU projects, and custom woodworking across Oregon and Washington.
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Edri Construction, Inc. in Burlingame offers full-service ADU construction across the Bay Area, including garage conversions, detached ADUs, attached additions, and custom interiors, with energy-efficient builds and multi-generational living solutions.
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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 moreUnion City, California, situated in Alameda County between Fremont, Newark, and Hayward, is a diverse and growing community that has seen increasing demand for Accessory Dwelling Units (ADUs). With its proximity to major employment hubs in Silicon Valley and the Bay Area, many Union City homeowners are turning to experienced ADU contractors to add rental income opportunities or house extended family members. The city's mix of single-family residential neighborhoods and relatively spacious lots makes it a prime location for ADU development.
Before breaking ground, homeowners must understand that ADU projects in Union City fall under both California state law and local Alameda County and City of Union City zoning ordinances. The Union City Community Development Department oversees the permitting process. Key regulations that your ADU contractor must navigate include:
Hiring a licensed ADU contractor familiar with Union City is essential for a smooth construction process. Local contractors understand the specific requirements of the Union City Building and Safety Division, including soil conditions common to the area and local utility connection protocols. They are also well-versed in coordinating with PG&E for utility hookups and navigating Alameda County's environmental review processes when applicable.
Union City homeowners typically work with ADU contractors to build one of the following unit types:
Working with a qualified ADU contractor in Union City, CA ensures your project meets all local building codes, stays on budget, and is completed efficiently. From initial design and permit submission to final inspection, the right contractor will guide you through every step. Given the high demand for rental housing in the Bay Area, investing in an ADU in Union City is a smart long-term decision for any homeowner.