ADU Contractors near Cupertino, CA
CDU Inc.
#595 San Ramon Valley Blvd, Danville, CA 94526
35.2 miles
CDU Inc. offers expert ADU construction & remodeling in the Greater Bay Area. Services include new builds, garage conversions, electrical, plumbing & custom design to boost property value & functionality.
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ADU Home Addition
68 Centre Street, Mountain View, CA 94041
5.6 miles
ADU Home Addition is a leading Bay Area ADU contractor with 12+ years of experience. They specialize in custom ADU construction, in-law suites, garage conversions, home additions, and rental-optimized ADUs, handling design, permits, and full const... read more
Marini Construction
11155 Foothill Avenue, Gilroy, CA 95020
30.9 miles
At Michael Marini Construction, we know that the journey starts with understanding both the potential and the requirements involved. With years of experience guiding clients through everything from design ideas to local building rules, we’re her... read more
Aboveboard Construction
3950 Bramble Lane, Santa Cruz, CA 95062
24.3 miles
Aboveboard Construction Inc. serves Santa Cruz County & Los Gatos with 20+ years in residential construction. Services include new homes, ADUs, remodels, additions, kitchens, bathrooms, decking, fencing & repairs.
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Urbatect Development, LLC
444 Airport Boulevard, Watsonville, CA 95076
30.1 miles
Urbatect Development LLC is a California & Washington ADU contractor offering custom homes, garage conversions, JADUs & detached ADUs. 15+ years experience, 3,500+ projects, fixed pricing, fast permitting & 3D design.
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Bao-Tran Builders Inc
2156 The Alameda, San Jose, CA 95126
6.7 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
HDR Remodeling
5677 Horton Street, Emeryville, CA 94608
38.6 miles
HDR Remodeling is a Bay Area Design Build firm since 1987, specializing in kitchen remodels, bathroom renovations, and home improvements across Oakland, Berkeley, Alameda, and the East Bay, backed by an experienced team of architects and designers... read more
Karl Kardel Company
4926 East 12th Street, Oakland, CA 94601
32.5 miles
Karl Kardel Company offers home remodeling, additions, and ADU construction in Oakland, Pasadena, and the Bay Area. Services include detached ADUs, garage conversions, granny flats, kitchen and bathroom renovations for residential properties.
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Manzanita Design Build
408 48th Street, Oakland, CA 94609
37.6 miles
Manzanita Design Build is an East Bay ADU contractor specializing in accessory dwelling units. Serving Berkeley, Oakland, Alameda & more. New ADU construction starts ~$300K, 5–8 month build time. Licensed (#1034108) & insured.
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Aldridge Construction
Monterey, CA 93901
49.6 miles
Aldridge Construction builds ADUs in Salinas, CA—detached, attached, garage conversions & interior units. Projects cost $150K–$300K, take 4–8 months, and include full permitting support. Free consultations available.
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Other cities in California
What you need to know
ADU Contractors in Cupertino, CA: Building in the Heart of Silicon Valley
Cupertino, California, is globally recognized as the home of Apple Inc. and sits at the center of Silicon Valley's booming tech economy. This reputation drives exceptionally high property values and a strong demand for additional housing solutions. ADU contractors in Cupertino are uniquely positioned to help homeowners maximize their property's potential, whether to house family members, generate rental income, or accommodate the area's ever-growing workforce. With median home prices consistently among the highest in Santa Clara County, adding an Accessory Dwelling Unit (ADU) is one of the smartest investments a Cupertino homeowner can make.
Cupertino ADU Regulations and Zoning Requirements
Working with an experienced ADU contractor in Cupertino is essential because the city follows both California state ADU laws and its own local ordinances. Cupertino falls under Santa Clara County jurisdiction for some services but maintains its own Community Development Department, which oversees ADU permits. Key regulations homeowners and contractors must navigate 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 yard setback is required for most new detached ADUs, in compliance with California state law (AB 68).
- Height limits: Detached ADUs are typically limited to 16 feet in height, though two-story ADUs may be permitted under specific conditions.
- Owner-occupancy rules: As of 2020, California state law removed owner-occupancy requirements for ADUs built before 2025, giving Cupertino homeowners more flexibility.
- Parking requirements: ADUs are generally exempt from additional parking requirements when located within half a mile of public transit.
Types of ADUs Built by Cupertino Contractors
Skilled ADU builders in Cupertino are experienced in constructing a wide variety of unit types to suit different lot sizes and homeowner needs. The most common ADU types in the area include:
- Detached ADUs — standalone structures built in the backyard
- Attached ADUs — additions connected to the primary home
- Garage conversion ADUs — transforming existing garages into livable space
- Junior ADUs (JADUs) — units up to 500 square feet created within the existing home
Why Hire a Local ADU Contractor in Cupertino?
Hiring a licensed and experienced local ADU contractor familiar with Cupertino's specific permitting process, school district considerations, and neighborhood aesthetics is critical to a successful project. Local contractors understand the nuances of working with the Cupertino Community Development Department and can help streamline approvals, avoid costly delays, and ensure full compliance with both state and local building codes.
With the demand for housing in Silicon Valley showing no signs of slowing, investing in an ADU in Cupertino is a financially sound decision. Partner with a trusted Cupertino ADU contractor today to begin planning your project and unlock the full potential of your property.