Detached ADU near San Mateo, 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 California and New Jersey.

Wellmade is a California prefab ADU builder specializing in panelized accessory dwelling units. Founded in 2020, they've completed 200+ projects, reducing construction waste by 85%. Serving CA, OR, and WA with all-inclusive pricing.

Elite Construction builds ADUs in Santa Cruz County, offering detached units, garage conversions & addition ADUs. Projects range 250–1,200 sq ft, cost $115K–$450K, and take 6–9 months. Free estimates available.

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.

Edri Construction, Inc. is a Berkeley-based general contractor specializing in ADU construction across the Bay Area. Services include garage conversions, detached ADUs, attached additions, granny flats, and custom interiors, with full project mana... read more

HBC Construction, based in Fremont, CA, specializes in ADU building, garage conversions, new homes & additions across the Bay Area. Licensed, code-compliant, full-service from planning to completion.

SOD Home Group builds attached & detached ADUs, including granny flats, in-law suites, garage conversions & backyard cottages. Licensed ADU contractor (Lic. 942085) helping homeowners expand living space efficiently.

PCI Construction Inc is a trusted ADU contractor offering custom accessory dwelling units, garage conversions, granny flats, and in-law suites. Licensed, bonded, and insured, they handle permitting, design, and construction efficiently.

Inspired ADUs is an architect-led ADU design firm serving the Bay Area and Southern California. With 20+ years of experience and 250+ ADUs permitted, they offer custom, panelized, and modular ADU solutions, plus interior design and SB9 lot split s... read more

AKD Homes is a SF Bay Area ADU contractor with 20+ years of experience. They offer full-service ADU design, permits, and construction, including detached ADUs, granny flats, and custom builds ranging from 400–750 sq. ft.

Edri Construction, Inc. is a San Francisco-based ADU contractor offering full-service accessory dwelling unit construction across the Bay Area, including garage conversions, detached ADUs, granny flats, and energy-efficient home additions with in-... read more

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 ... read more

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.