Detached ADU near Cupertino, CA

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

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.

At ADU San Mateo, we combine architectural insight, construction experience, and deep knowledge of Bay Area zoning laws to deliver high quality accessory dwelling units from design through move in. Our mission is simple: to make building your ADU ... read more

Vitalize Build is a Bay Area ADU contractor offering design and construction services for detached ADUs, garage conversions, and in-law suites. They provide preapproved, predesigned, and custom layouts ranging from 238 to 1,200 sq ft.

Epic Modulars delivers fast, flexible, and customizable solutions for homes and ADUs. Their manufactured homes and ADUs are built in controlled factory environments, ensuring superior quality, faster timelines, and predictable costs.

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.... read more

SF Bay ADU is a full-service Bay Area ADU contractor offering design, permitting, and construction for units from 600–1,200 sq ft. Options include studio, 2bed/2bath, garden cottage, and in-law suites for rental income or multigenerational livin... read more

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.

Custom Home is a Bay Area ADU contractor (CSLB #986048) with 160+ projects since 2005. They build detached, attached, junior ADUs & garage conversions across South Bay & Peninsula, with costs from $120K–$500K+.

Intelligent Choice Builders is a licensed Bay Area ADU contractor serving Palo Alto, Cupertino, San Jose & Sunnyvale. They build detached ADUs, garage conversions, granny flats & more, managing permits, design & construction end-to-end... read more

YCD Studio is a Bay Area architecture firm specializing in ADU design and permits in Moraga and the Lamorinda area. Services include detached ADUs, garage conversions, and JADUs, with expertise in WUI standards and local fire district requirements... read more

RWB Construction is a Lafayette, CA-based ADU contractor serving the Bay Area. They build detached ADUs, garage conversions, granny flats & in-law suites, managing design, permitting, and construction from start to finish.