ADU Contractors near Union City, CA
Realty Builders Inc.
50 California Street, San Francisco, CA 94111
24.6 miles
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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Palo Alto ADU Solutions
2590 Marshall Drive, Palo Alto, CA 94303
13 miles
Custom ADU builders in Palo Alto, CA, specializing in granny flats, detached ADUs & backyard cottages. Personalized design, permitting, and full construction management for quality accessory dwelling units.
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Apex Homes ADU Design-Builder
10050 North Foothill Boulevard, Cupertino, CA 95014
19.6 miles
Apex Homes is a full-service ADU builder in the South Bay Area, serving Campbell, Palo Alto & South San Jose. They offer detached ADUs, granny flats & in-law suites, with pre-designed floor plans from $185,000.
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California Building and Remodeling
1900 Camden Avenue, Albany, CA 95124
24.2 miles
California Building and Remodeling offers ADU construction, kitchen & bathroom remodeling, roofing, and concrete services in Albany, CA and the Bay Area. Experienced ADU contractor serving Albany, Berkeley, Richmond & more.
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Loona Construction Inc.
8407 Central Avenue, Newark, CA 94560
6.1 miles
Loona Construction Inc. is a San Francisco ADU contractor specializing in detached ADUs, garage conversions, attached ADUs, and JADUs. They handle design, permitting, and construction, helping homeowners add rental income or family housing.
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Urban Shore Builders
226 Delfino Avenue, Point Richmond, CA 94801
30.1 miles
Urban Shore Builders offers full-service ADU design & construction, including garage conversions, detached units & additions. As a turnkey ADU contractor, they handle permits, design & build. Services include plumbing, electrical, HVAC & retaining walls.
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Apex ADU Builders
10050 North Foothill Boulevard, Los Angeles, CA 95014
19.6 miles
Apex ADU Builders is a Los Angeles-based contractor specializing in accessory dwelling unit construction. Services include new builds, garage conversions, permitting, and design. Costs range from $80K–$400K, with potential ROI 35% higher than homes without ADUs.
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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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Nestadu
100 Shoreline Highway, Mill Valley, CA 94941
33.2 miles
Nestadu is a full-service ADU builder offering custom site-built and prefab accessory dwelling units. Prefab models range from $115K–$317K. Custom builds start at $400/sq ft. Financing options include HELOCs, construction loans, and CA grants.
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Northbay Home Solutions
47 Paul Drive, San Rafael, CA 94903
36.9 miles
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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Elite ADU Santa Cruz
347 Soquel Avenue, Santa Cruz, CA 95062
43 miles
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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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.