ADU Contractors near Alameda, CA
Edri Construction, Inc. Walnut Creek
1990 N California Blvd Ste 20, Walnut Creek, CA 94596
14.6 miles
Edri Construction, Inc. is a Walnut Creek-based ADU contractor serving the Bay Area. They specialize in garage conversions, detached ADUs, attached additions, in-law suites, and JADUs, handling design, permitting, and project management.
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Top Rated Builders
5450 Thornwood Drive, San Jose, CA 95123
41.9 miles
At Top Rated Builders, we offer expert ADU construction services tailored to meet your specific needs. Whether you’re looking to add a studio ADU, a one-bedroom ADU, or a larger family unit, our experienced team will guide you through the entire construction process.
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ON Design & Remodeling
1762 Technology Drive, San Jose, CA 95110
33.4 miles
ON Design & Remodeling is a Bay Area ADU builder offering home additions, garage conversions, granny flats, and in-law suites. They help homeowners expand living space, boost property value, and generate rental income.
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Urban Shore Builders
226 Delfino Avenue, Point Richmond, CA 94801
12.9 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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Edri Construction, Inc. San Francisco
701 Cortland Avenue, San Francisco, CA 94110
8.3 miles
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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ADU San Mateo
3 East 3rd Avenue, San Mateo, CA 94401
14.4 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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Edri Construction, Inc. Berkeley
2120 University Ave, Berkeley, CA 94704
7.3 miles
Edri Construction, Inc. is a Berkeley-based general contractor specializing in ADU construction across the Bay Area. Services include garage conversions, detached ADUs, attached additions, granny flats, and custom interiors, with full project management from permits to finishing.
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Bay Area Home Remodelers
225 Schwerin Street, San Francisco, CA 94134
8.8 miles
Bay Area Home Remodelers builds ADUs in Daly City, San Francisco & San Jose. Services include garage conversions, granny flats, JADUs & detached units. Full project support from permits to completion.
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Palo Alto ADU Solutions
2590 Marshall Drive, Palo Alto, CA 94303
24 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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Home Quality Remodeling
1070 Concord Avenue, Concord, CA 94520
18.4 miles
Home Quality Remodeling Inc. is a licensed Bay Area general contractor (CSLB #838832) with 20+ years of experience. Services include kitchen & bathroom remodeling, room additions, ADUs, and outdoor living across Concord, San Jose, and Paramus, NJ.
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Kyvos Construction
430 Railroad Avenue, Pittsburg, CA 94565
26.9 miles
Kyvos Construction offers home remodeling & ADU construction in Concord, CA. Services include kitchen & bathroom renovations, room additions, garage conversions, detached & attached ADUs, granny flats, and in-law suites.
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ExpandADU | Prefab ADUs
41111 Mission Boulevard, Fremont, CA 94539
25.6 miles
ExpandADU is a California-based prefab ADU builder offering full-service accessory dwelling unit construction, including consultation, design, planning, and build. Serving the Bay Area and beyond, they specialize in detached ADUs, granny flats, and JADUs.
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NorCal ADU Builders
San Francisco, CA 94104
7.5 miles
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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California Building and Remodeling
1900 Camden Avenue, Albany, CA 95124
39.7 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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Realty Builders Inc.
50 California Street, San Francisco, CA 94111
7.4 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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Other cities in California
What you need to know
Building ADUs on Alameda Island: Unique Challenges and Opportunities
Alameda, California is a unique island city situated in the San Francisco Bay, connected to the mainland by tunnels and bridges. This distinctive geography creates specific considerations for ADU contractors in Alameda. The city sits in a liquefaction and seismic hazard zone, meaning that accessory dwelling unit construction must meet strict foundation and structural requirements. Experienced Alameda ADU contractors understand that soil conditions on the island often require additional geotechnical assessments before breaking ground, adding an important layer of planning to every project.
Alameda ADU Regulations and Zoning Requirements
The City of Alameda follows California state ADU law while also maintaining its own local guidelines. Alameda has a strong commitment to historic preservation, as many of its neighborhoods feature Victorian and Craftsman-era homes. ADU builders in Alameda must often navigate the city's Design Review process to ensure that new accessory dwelling units are compatible with the architectural character of existing structures. Key regulations include:
- Detached ADUs can be up to 1,200 square feet in most residential zones
- Junior ADUs (JADUs) up to 500 square feet are permitted within existing single-family homes
- Setback requirements of 4 feet from rear and side property lines for detached ADUs
- ADUs in historic districts may require additional design review approval
- Owner-occupancy requirements may apply depending on the type of ADU and local ordinance updates
Why Hire a Local ADU Contractor in Alameda?
Working with a licensed ADU contractor familiar with Alameda is essential for a smooth permitting and construction process. Local contractors understand the nuances of working with the City of Alameda's Building and Planning Departments, which can help reduce delays and costly revisions. They are also well-versed in the city's utility infrastructure, including the specific requirements for connecting to Alameda Municipal Power (AMP), the city's publicly owned electric utility — a detail that can affect project timelines and costs.
Types of ADUs Commonly Built in Alameda
Given Alameda's older housing stock and lot sizes, the most popular ADU types built by Alameda ADU contractors include:
- Garage Conversions – Many Alameda homes have detached garages ideal for conversion
- Detached Backyard ADUs – New construction units built in rear yards
- Junior ADUs (JADUs) – Carved out of existing interior space within the primary home
- Above-Garage ADUs – Second-story additions above existing garage structures
Start Your Alameda ADU Project Today
Whether you're looking to add rental income, house extended family, or increase your property value, building an ADU in Alameda is a smart investment. Partnering with an experienced ADU contractor in Alameda, CA ensures your project meets all local codes, respects the city's historic character, and is completed efficiently. Contact a qualified local ADU specialist today to get started with a site evaluation and design consultation.