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ADU Contractors near San Carlos, CA
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Colibri Kitchen & Bath
5976 Telegraph Ave, Oakland, CA 94609 23.2 milesColibri Kitchen & Bath offers full-service ADU construction in Oakland, handling design, permitting, and building. Services include site assessment, architectural plans, 3D renderings, and complete construction from foundation to finishing.
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DevArt8 Builders
1828 South Milpitas Boulevard, Milpitas, CA 95035 21.5 miles
Luxury Builds
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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Bayside Builders Group
1151 Harbor Bay Parkway, Alameda, CA 94502 15.8 miles
Licensed
25 years in business
Bayside Builders Group is a licensed Bay Area ADU contractor with 25+ years of experience. Services include detached ADUs, garage conversions, and in-law suites. Serving Oakland, San Jose, San Francisco, and surrounding counties.
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California Bay Builders & Remodeling
2150 N 1st Street Suite 400, San Jose, CA 95131 20.8 miles
Licensed
Eco-Friendly
Bay Area design-build ADU specialists. One project, one point of contact — design, engineering, permitting, and construction from start to finish. CSLB #1130783.
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Apex ADU Builders
10050 North Foothill Boulevard, Los Angeles, CA 95014 16.3 milesApex 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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ADU For You
1755 East Bayshore Road, Redwood City, CA 94063 3.2 miles
Luxury Builds
ADU For You is a Bay Area ADU builder based in Redwood City, offering end-to-end services including design, permits, and construction. Serving 1,000+ clients, they specialize in custom detached ADUs, granny flats, and in-law suites at competitive prices.
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Kyvos Construction
430 Railroad Avenue, Pittsburg, CA 94565 41.4 miles
Luxury Builds
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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Diagram Architecture
2201 Shore Line Drive, Alameda, CA 94501 17.9 milesDiagram Architecture & Diagram Design Build completed a 871 sq ft detached ADU with 2 beds, 1.5 baths, open floor plan, stainless appliances, custom closets & natural light—maximizing compact living through integrated design-build expertise.
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Alameda Tiny Homes
2315 Lincoln Avenue, Alameda, CA 94501 18.6 miles
Nestadu
100 Shoreline Highway, Mill Valley, CA 94941 29.6 miles
Luxury Builds
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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Jaws Construction Services
14000 Kelso Road, Byron, CA 94514 43.4 milesJaws Construction Services builds ADUs, garage conversions, and JADUs. They handle permits, HOA coordination, and offer site-built or prefab options. East Bay ADUs rent for $1,500–$3,500+/month, potentially boosting property value.
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Edri Construction, Inc. Walnut Creek
1990 N California Blvd Ste 20, Walnut Creek, CA 94596 30.3 miles
Eco-Friendly
Luxury Builds
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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Excellent Home Remodeling
1310 Alma Avenue, Walnut Creek, CA 94596 29.5 miles
Free Consultation
Excellent Home Remodeling offers professional home addition services in Sonoma, helping homeowners expand living spaces, add bedrooms, bathrooms, home offices, or in-law suites. They handle planning and execution tailored to each property's needs.
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Done Right Builders and Remodeling
1825 De La Cruz Boulevard, Santa Clara, CA 95050 20.3 miles
Licensed
20 years in business
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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Other cities in California
- North Highlands
- Sacramento
- North Hollywood
- Agoura Hills
- Encino
- Los Angeles
- Tarzana
- Long Beach
- Hollywood
- Glendale
- Valley Village
- Pasadena
- Burbank
- Downey
- Beverly Hills
What you need to know
Building ADUs in San Carlos: A City That Embraces Smart Growth
San Carlos, California, often called the "City of Good Living," is a vibrant Peninsula community in San Mateo County that has embraced accessory dwelling units (ADUs) as a practical solution to the Bay Area's ongoing housing challenges. With its desirable location between San Francisco and Silicon Valley, San Carlos has seen strong demand for ADUs as homeowners look to add rental income, house family members, or increase property value. Working with experienced ADU contractors in San Carlos is essential to navigating the city's specific planning requirements and making the most of your investment.
San Carlos ADU Regulations and Permitting Requirements
San Carlos follows California state ADU law while also maintaining its own local guidelines through the Community Development Department. Homeowners and ADU builders in San Carlos must be aware of the following key regulations:
- Detached ADUs can be up to 1,200 square feet, depending on lot size and zoning.
- Attached ADUs are generally limited to 50% of the primary dwelling's square footage.
- Junior ADUs (JADUs) are capped at 500 square feet and must be within the existing structure.
- Setback requirements typically require a minimum of 4 feet from rear and side property lines for new detached ADUs.
- ADUs must comply with San Mateo County's fire safety standards, which may require sprinkler systems in certain cases.
- Owner-occupancy requirements were suspended under California state law, allowing more flexibility for investors and homeowners alike.
Why Hire a Local ADU Contractor in San Carlos?
Hiring a licensed ADU contractor familiar with San Carlos is one of the most important decisions you'll make during your project. Local contractors understand the nuances of the city's permitting process, know how to work efficiently with the San Carlos Building Division, and are familiar with the architectural styles common in neighborhoods like White Oaks, Howard Park, and Beverly Terrace. A knowledgeable contractor can help streamline approvals and avoid costly delays.
Types of ADUs Popular in San Carlos
Given the typical lot sizes and existing home styles in San Carlos, the most popular ADU types include:
- Garage conversions – Many San Carlos homes have detached garages that are ideal candidates for conversion.
- Detached backyard cottages – A popular choice for homeowners with larger lots.
- Basement conversions – Some older homes in San Carlos have underutilized basement space perfect for ADU development.
Start Your San Carlos ADU Project Today
Whether you're looking to create a rental unit, a home office, or a space for aging parents, working with a qualified ADU contractor in San Carlos, CA ensures your project meets all local and state requirements. With rising property values and strong rental demand in the Peninsula, an ADU is one of the smartest investments a San Carlos homeowner can make. Reach out to a trusted local ADU specialist today to get started.