ADU Contractors near Union City, CA
9 Builders
San Jose, CA 95122
21.5 miles
9 Builders is a Bay Area ADU contractor offering full-service design, permits & construction. Specializing in detached ADUs, garage conversions & additions, costs range $150K–$350K, taking 8–14 months to complete.
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Alameda Tiny Homes
2315 Lincoln Avenue, Alameda, CA 94501
16.7 miles
Golden View Renovation
1545 Berger Drive, San Jose, CA 95112
17.3 miles
Golden View Renovation offers ADU design, room additions & full construction services in San Jose & the Bay Area. Services include permits, JADUs, remodeling & free consultations for homeowners seeking to expand living space.
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Velazquez Construction
156 Casillas Avenue, Freedom, CA 95019
48.1 miles
Velazquez Construction is a licensed, bonded general contractor (Lic. #1081720) with 18+ years serving Watsonville, Santa Cruz, Monterey & San Jose. Specializing in ADUs, garage conversions, remodels & home additions.
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Burton Builders LLC
32 9th Street, Richmond, CA 94801
29.6 miles
Burton Builders LLC is a trusted construction company specializing in ADU construction, single-family, multifamily, and commercial builds. Known for quality workmanship and client-focused service, they deliver expert results on every project.
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Home WiP Construction Concierge
171 Main St 261, Los Altos, CA
16.4 miles
ADU San Mateo
3 East 3rd Avenue, San Mateo, CA 94401
17.1 miles
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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Soliz General Construction & Painting Inc
10069 Bernhardt Drive, Oakland, CA 94603
12.5 miles
Soliz General Construction & Painting Inc is a Bay Area ADU contractor with 20+ years of experience. They offer full-service ADU design and construction, including permits, structural work, and finishing for granny flats, in-law suites, and backyard cottages.
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UDA ADU
Palm Avenue, Los Altos, CA 94022
16.8 miles
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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Parsa Construction
1105 Fair Weather Circle, Concord, CA 94518
23.8 miles
Parsa Construction offers residential & commercial remodeling, ADU construction, and retrofit services. Specializing in kitchen, bathroom, room additions, and accessory dwelling units like granny flats and detached ADUs, they manage permits, design, and build.
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Haus+
Corte Madera, CA 94925
35.6 miles
Haus+ is a Bay Area ADU builder offering turnkey accessory dwelling units for California homeowners. They handle design, permitting, and construction using a panelized hybrid method, with all-inclusive upfront pricing and in-house financing available.
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San Francisco ADU Solutions
967 Connecticut Street, San Francisco, CA 94107
26.5 miles
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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OCA Builders | Construction Company & ADU Contractor
245 20th Avenue, Santa Cruz, CA 95062
44 miles
OCA Builders is a trusted Santa Cruz general contractor specializing in ADU construction, custom homes, kitchen & bathroom remodeling, room additions, and commercial build-outs, delivering quality craftsmanship with deep local zoning expertise.
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Perpetual Homes ADU
4115 Blackhawk Plaza Circle, Danville, CA 94506
14.7 miles
Perpetual Homes is a Northern California ADU builder with 40+ years of experience. They offer customizable prefab ADUs, a 10-step process, no site work markup, Energy Star insulation, a 7-year warranty, and an A+ BBB rating.
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DNM Architecture
1A Gate 5 Road, Sausolito, CA 94965
32.2 miles
DNM Architecture is a California-based firm specializing in ADU design and permitting. Their ADUxDNM program covers site analysis, design, permitting, and construction management, offering detached ADUs, garage conversions, and more.
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Other cities in California
What you need to know
ADU Contractors in Union City, CA: Building in the Heart of the Tri-City Area
Union 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.
Understanding Union City ADU Regulations and Permitting
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:
- Setback requirements: Detached ADUs typically require a minimum 4-foot rear and side yard setback.
- Maximum ADU size: Detached ADUs can be up to 1,200 square feet, while attached ADUs are generally limited to 50% of the primary dwelling's square footage.
- Height limits: Detached ADUs are generally limited to 16 feet in height, though this can vary based on proximity to the main structure.
- Owner-occupancy rules: California state law has suspended owner-occupancy requirements for ADUs until 2025, offering more flexibility for Union City property owners.
- Parking requirements: ADUs located within half a mile of public transit may be exempt from additional parking requirements — a significant advantage given Union City's access to BART.
Why Hire a Local ADU Contractor in Union City?
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.
Types of ADUs Popular in Union City
Union City homeowners typically work with ADU contractors to build one of the following unit types:
- Detached ADUs: Standalone structures in the backyard, ideal for larger lots common in Union City's residential neighborhoods.
- Attached ADUs: Extensions of 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 home's footprint, often from a converted bedroom or garage space.
- Garage Conversions: A cost-effective option for Union City homeowners looking to maximize existing structures.
Get Started with a Trusted Union City ADU Contractor
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.