ADU Contractors near Orinda, CA
Jeff Martinez Construction
11 Susie Ct, Oakley, CA 94561
27.6 miles
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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Full Steam Ahead Construction
3527 Mount Diablo Boulevard, Lafayette, CA 94549
3.5 miles
Licensed ADU contractor Full Steam Ahead Construction serves East Bay homeowners with custom accessory dwelling units, including garage conversions, backyard cottages & in-law suites. Serving Concord, Oakland, Berkeley & more.
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Edri Construction, Inc. Mill Valley
1 Belvedere Pl, Mill Valley, CA 94941
20.8 miles
Edri Construction, Inc. is a Mill Valley-based Bay Area ADU contractor offering full-service accessory dwelling unit construction, including garage conversions, detached ADUs, JADUs, and in-law suites, with permit handling and energy-efficient building.
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DevArt8 Builders
1828 South Milpitas Boulevard, Milpitas, CA 95035
36.1 miles
DevArt8 Builders specializes in ADU construction in Gilroy, offering floor plans from 350–650 sq. ft. They handle permits, ensure zoning compliance, and build detached ADUs, attached units, and garage conversions tailored to each property.
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AKD Homes
3518 Arden Rd, Hayward, CA 94545
18.3 miles
AKD Homes is a Bay Area ADU contractor with 20+ years of experience. They offer full-service ADU design and build, including detached ADUs, custom designs, and conversions from Berkeley to San Jose.
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Clever Design & Remodeling
1630 Oakland Road, San Jose, CA 95131
37.9 miles
Clever Design & Remodeling builds ADUs across the San Francisco Bay Area, including garage conversions, attached, detached, and junior ADUs. Services cover permits, construction, interior design, and landscaping. Average ADU cost is ~$145,000.
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American Builders
1105 Grand Teton Drive, Pacifica, CA 94044
25.6 miles
American Builders is a San Francisco ADU contractor specializing in garage conversions, detached units, in-law suites & basement conversions. They handle permits, zoning, and deliver code-compliant accessory dwelling units on time and on budget.
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Crane Construction
1910 North Main Street, Walnut Creek, CA 94596
6.5 miles
Crane Construction is a licensed Bay Area general contractor based in Walnut Creek, CA. They specialize in design-build projects, ADUs, garage conversions, remodeling, and new construction for residential and commercial clients. Free estimates available.
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West Coast ADU
4245 Hargrave Avenue, Santa Rosa, CA 95407
49.4 miles
West Coast ADU is a California-based ADU builder offering prefab & manufactured accessory dwelling units. They help homeowners add rental income, house family members & boost property value with streamlined permitting & construction.
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Edri Construction, Inc. Walnut Creek
1990 N California Blvd Ste 20, Walnut Creek, CA 94596
6.4 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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Vargas Construction
16064 Vía Harriet, San Lorenzo, CA 94580
13.1 miles
Vargas Construction is a California ADU contractor offering detached, attached, garage, junior, and multifamily ADUs. They handle design, permitting, and construction with energy-efficient materials, custom interiors, and full amenities in 2–6 months.
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Type Five
1336 Channing Way, Berkeley, CA 94702
5.9 miles
Type Five is a Berkeley, CA-based ADU builder offering custom backyard cottages, granny flats & in-law suites. They combine modular design, transparent pricing & streamlined construction for stress-free, high-quality detached ADUs built to last.
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Green Living Builders, LLC
833 Bancroft Way, Berkeley, CA 94710
6.5 miles
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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Cupertino ADU Solutions
10320 North De Anza Boulevard, Cupertino, CA 95014
39.6 miles
Cupertino ADU is Silicon Valley's premier ADU builder, specializing in accessory dwelling units for rental income, intergenerational living, home offices, and eco-friendly housing solutions tailored to Cupertino homeowners.
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ExpandADU | Prefab ADUs
41111 Mission Boulevard, Fremont, CA 94539
29.3 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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Other cities in California
What you need to know
ADU Contractors in Orinda, CA: Building in the Scenic Lamorinda Hills
Orinda, California, nestled in the scenic hills of Contra Costa County, is known for its wooded, hillside terrain, top-rated schools, and upscale residential neighborhoods. These characteristics make it a highly desirable location for homeowners looking to add an Accessory Dwelling Unit (ADU) to their property. However, the unique topography and strict local regulations mean that hiring experienced ADU contractors in Orinda is absolutely essential for a successful project. From navigating steep slopes to complying with fire safety requirements in a high-risk fire zone, building an ADU in Orinda comes with its own set of challenges and opportunities.
Understanding Orinda's ADU Regulations and Permitting Process
Orinda falls under the jurisdiction of the City of Orinda Community Development Department, which oversees all ADU permits and building approvals. Like all California cities, Orinda must comply with California state ADU laws (AB 68, AB 881, SB 13), which have significantly streamlined the approval process. However, local zoning ordinances still apply. Key regulations that ADU contractors in Orinda must navigate include:
- Setback requirements: Detached ADUs typically require a minimum 4-foot side and rear setback.
- Maximum ADU size: Detached ADUs can be up to 1,200 square feet, while attached ADUs are limited to 50% of the primary dwelling's square footage.
- Height limits: Detached ADUs are generally limited to 16 feet in height.
- Fire safety compliance: Orinda is located in a Very High Fire Hazard Severity Zone (VHFHSZ), requiring ADUs to meet strict fire-resistant construction standards under CAL FIRE guidelines.
- Hillside grading: Many Orinda properties require geotechnical reports and grading permits due to the hilly terrain.
Why Hire a Local ADU Contractor in Orinda?
Working with a licensed and experienced ADU contractor familiar with Orinda's specific requirements can save homeowners significant time and money. Local contractors understand the nuances of building on hillside lots, including foundation challenges, drainage considerations, and soil stability. They are also well-versed in Orinda's design review process, which may apply in certain neighborhoods to ensure new structures are visually compatible with the surrounding environment.
Types of ADUs Commonly Built in Orinda
Given the large lot sizes typical of Orinda properties, homeowners have several ADU options to consider:
- Detached ADUs: Standalone structures in the backyard, ideal for larger lots.
- Attached ADUs: Extensions of the primary home, sharing at least one wall.
- Garage Conversions: Converting an existing attached or detached garage into a living space.
- Junior ADUs (JADUs): Units up to 500 square feet created within the existing home footprint.
Start Your Orinda ADU Project Today
Whether you're looking to generate rental income, house a family member, or increase your property value, an ADU is a smart investment in Orinda's competitive real estate market. Connect with a qualified ADU contractor in Orinda, CA who can guide you through every step — from initial design and permitting to final construction — ensuring your project meets all local and state requirements efficiently and professionally.