New Key Construction

2890 North Main Street, Walnut Creek, CA 94597 42.1 miles

ADBC Architecture

460 Mandana Boulevard, Oakland, CA 94610 36 miles

ADBC Architecture completed an 800 SF detached ADU in East Bay, CA in 2025, designed for multigenerational living. Built with thermally modified wood and steel, the backyard cottage features high ceilings and large windows for a spacious feel.

Andrew G. Construction

2000 Broadway Ste. #152, Redwood City, CA 94061 15.3 miles

Joy Line Homes

3110 Mission Drive, Capitola, CA 95065 17.7 miles

Prefab Specialist Luxury Builds

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 accessory dwelling units.

HDR Remodeling

5677 Horton Street, Emeryville, CA 94608 38.6 miles

Licensed 38 years in business Eco-Friendly

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.

King David Construction

3000 El Camino Real, Palo Alto, CA 94306 8.9 miles

Luxury Builds

King David Construction is a Palo Alto ADU contractor offering full-service design, permitting & construction across the Bay Area. Specializing in detached ADUs, garage conversions & in-law suites.

Remodeling Heroes

2150 Shattuck Avenue, Berkeley, CA 94704 40.1 miles

Licensed

Remodeling Heroes is a licensed ADU contractor in the SF Bay Area offering garage conversions, detached ADUs, in-law suites, permits, and full project management for code-compliant, lot-smart accessory dwelling unit construction.

Precision Construction Inc

19 Quail Run Circle, Salinas, CA 93907 48.4 miles

Precision Construction Inc offers custom ADU solutions in Monterey County, handling permits, site prep, design, and construction. Services include in-law suites, rental units, and home offices, tailored to local zoning rules and client budgets.

Ingenuity Construction Group

991 Berryessa Road, San Jose, CA 95133 9.4 miles

At Ingenuity Construction Group, we specialize in crafting exceptional Accessory Dwelling Units (ADUs) that blend seamlessly with your existing property. With over 20 years of experience, our dedicated team ensures each ADU project is completed with meticulous attention to detail and superior craftsmanship.

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.

Reno Revive Remodeling

2655 Stanwell Drive, Concord, CA 94520 46.1 miles

Whether you’re planning a rental unit, a guest house, or a private suite for family, RenoRevive will help you design and build a fully functional ADU that fits your needs, your lot, and your long-term goals.

ENE Smarthome, Inc.

690 Saratoga Avenue, San Jose, CA 95129 4 miles

ENE Smarthome, Inc. is a Bay Area contractor offering home remodeling, ADU construction, smart home upgrades, and accessibility improvements. Services include garage conversions, granny flats, aging-in-place remodels, and SB9-compliant ADU projects.

ADU Builders Group

15166 Los Gatos Boulevard, Los Gatos, CA 95032 6.9 miles

21 years in business Eco-Friendly

ADU Builders Group is a Bay Area family-owned ADU contractor with 21+ years of experience. They build attached, detached, converted, and junior ADUs, offering full design-build services, permitting support, a 3-year warranty, and a 10-year structural guarantee.

The ADU Dudes

Livermore, CA 29.5 miles

Licensed

The ADU Dudes is a Bay Area & Northern California ADU contractor offering ADU construction, JADUs, garage conversions, home additions & new builds. Licensed under San Andres Construction (#1081083), serving San Jose, Oakland, Fremont & more.

Adria Design + Build

648 Paco Drive, Los Altos, CA 94024 5 miles

We guide you through design options and material choices, taking precise measurements to create a custom plan that perfectly fits your property. This careful planning ensures that your new ADU will seamlessly blend with your existing space and meet all your functional needs.

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:

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:

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.

ADU Contractors near Cupertino, CA