ADU Contractors near San Ramon, CA
Luma Dwellings Home Builder
63 Hazel Tree Ridge, Orinda, CA 94563
15.8 miles
We are a family-first, boutique residential design & build firm serving the Orinda and East Bay community. We’re not just service providers — we’re your neighbors. We understand the local permitting process, the hillside terrain, the fir... read more
Mendez and Son's Construction Inc
39647 Iolani Ct., Fremont, CA 94538
16.3 miles
Mendez and Son's Construction is a Bay Area ADU contractor offering design-build services in Palo Alto, Mountain View, San Mateo & Walnut Creek. They handle detached ADUs, garage conversions & JADUs, managing permits to final inspection.read more
Bao-Tran Builders Inc
2156 The Alameda, San Jose, CA 95126
28.9 miles
Bao-Tran Builders Inc specializes in ADU construction, including detached ADUs, granny flats, JADUs, garage conversions & multi-unit properties. Expert ADU contractor delivering functional, high-quality housing solutions for property owners.read more
Quartz Construction
1777 Hamilton Avenue, San Jose, CA 95125
32.3 miles
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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Rosegold Builders, Inc.
358 South Abbott Avenue, Milpitas, CA 95035
23.4 miles
Rosegold Builders builds custom ADUs across the Bay Area and Los Angeles, handling permits, zoning, and construction. Services include garage conversions, backyard cottages, and rental units designed to boost property value.
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Build My Casita
652 Gilman Street, Palo Alto, CA 94301
25.1 miles
Home Quality Remodeling
1070 Concord Avenue, Concord, CA 94520
16.4 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,... read more
Greyhawk Construction
P.O. Box 154, Patterson, CA 95363
46.4 miles
Greyhawk Construction offers full-service ADU construction, including garage conversions, detached backyard cottages, granny flats, and in-law suites. They manage design, permitting, and build, helping homeowners add value and flexible living spac... read more
Done Right Builders and Remodeling
1825 De La Cruz Boulevard, Santa Clara, CA 95050
27.8 miles
Done Right Builders & Remodeling is a licensed Bay Area ADU contractor (Lic#1002689) with 20+ years experience. Services include detached/attached ADUs, JADUs & garage conversions in Union City, Hayward, San Jose & Santa Clara.
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AK Pahulu Construction
1353 B Street, Hayward, CA 94541
9.4 miles
AK Pahulu Construction, a licensed Bay Area general & concrete contractor since 2015, offers custom homes, ADUs, remodeling, framing & more. Serving Oakland, San Jose, Fremont & beyond. Projects range from $10K–$2M.
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Urban Building Workshop
130 Bush Street, San Francisco, CA 94104
25.4 miles
Urban Building Workshop is a full-service architecture firm in the Bay Area specializing in custom homes, remodels, and ADUs. Experts in Marin County, San Francisco, and Sonoma County permitting, they deliver efficient, light-filled designs.
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Joy Line Homes
3110 Mission Drive, Capitola, CA 95065
48.7 miles
Joy Line Homes offers the ADURA ADU Series — factory-built backyard cottages and granny flats featuring modern design, high-end finishes, and durable materials. An affordable, plan-based ADU solution for homeowners seeking quality detached acces... read more
Dwelling Lab
21 El Caminito, Walnut Creek, CA 94598
11.6 miles
Dwelling Lab is an Oakland-based ADU design firm offering full-service planning, schematic design, construction drawings, permitting, and construction oversight for detached ADUs, attached additions, and garage conversions.
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BUILD 33
21045 Cory Court, Cupertino, CA 95014
31.6 miles
BUILD 33 (CSLB #1051529) is a licensed general contractor based in Cupertino, CA, serving California, Arizona, Nevada, and Louisiana. They offer home additions, flooring, painting, plumbing, electrical, and more. Free quotes available.
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ON Design & Remodeling
1762 Technology Drive, San Jose, CA 95110
27.1 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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Other cities in California
What you need to know
ADU Contractors in San Ramon: Building in One of California's Most Affluent Cities
San Ramon, California, is consistently ranked among the wealthiest and most desirable cities in the Bay Area, with a median household income well above the state average. Located in Contra Costa County within the San Ramon Valley, this thriving city is home to major corporate headquarters and a highly educated population. As housing demand continues to surge across the Bay Area, ADU contractors in San Ramon are playing a critical role in helping homeowners maximize their property value and address the region's housing shortage.
San Ramon ADU Regulations and Zoning Requirements
Before breaking ground, experienced ADU contractors in San Ramon must navigate the city's specific zoning and permitting requirements. San Ramon follows California state ADU laws (AB 68, AB 881, and SB 13), which streamlined ADU approvals statewide, but the city also enforces its own local standards. Key regulations include:
- 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.
- Setback requirements: A minimum 4-foot rear and side setback is typically required for detached ADUs.
- Height limits: Detached ADUs are generally limited to 16 feet in height.
- Owner-occupancy: San Ramon previously required owner-occupancy, but state law has suspended this requirement through 2025.
- Parking: In many cases, one replacement parking space is required when a garage is converted, though exceptions apply near transit corridors.
Types of ADUs Built by San Ramon Contractors
Professional ADU builders in San Ramon offer a variety of construction options tailored to the city's predominantly single-family residential neighborhoods. Common ADU types include:
- Detached ADUs: Standalone structures built in backyards, ideal for larger lots common in San Ramon neighborhoods like Gale Ranch and Windemere.
- Attached ADUs: Units added to the side or rear of an existing home.
- Garage Conversions (ADUs): Converting existing garages into livable space, a cost-effective option popular in San Ramon.
- Junior ADUs (JADUs): Units up to 500 square feet created within the existing footprint of a primary residence.
Why Hire a Local ADU Contractor in San Ramon?
Working with a licensed ADU contractor familiar with San Ramon ensures your project complies with Contra Costa County building codes, the City of San Ramon's Community Development Department requirements, and California Title 24 energy efficiency standards. Local contractors understand the soil conditions, HOA restrictions common in master-planned communities, and the permitting timelines specific to this city. A knowledgeable contractor can also help you leverage California's ADU fee waivers for units under 750 square feet, potentially saving thousands of dollars.
Whether you're looking to generate rental income, house extended family, or increase your property's resale value, partnering with a qualified ADU contractor in San Ramon, CA is the smartest first step toward a successful build.