Attached ADU in California

ADUs are secondary residential units on the same lot as a primary home. Ability Drafting Services assists homeowners with ADU design and permitting, covering detached, attached, and garage conversion types, preparing full drawing sets for approval... read more

Licensed San Diego design-build contractor (CSLB #1074166) building attached and detached ADUs across San Diego and Orange County, with design, permitting and construction handled in-house.

ADU Designers & Builders is a full-service ADU contractor in Fullerton, CA, offering detached ADUs, garage conversions, attached ADUs & JADUs across Southern California, with expert design, permitting, solar integration & 0% financing ... read more

URBN BLDRS is a specialized ADU contractor helping homeowners plan and build accessory dwelling units. They offer expert guidance, dedicated project teams, and streamlined processes from consultation to construction completion.

LPI Construction offers custom homes, ADU construction, and solar electric systems. Services cover hillside builds, detached/attached ADUs, garage conversions, and sustainable building practices, managing full project lifecycles from permits to co... read more

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.

Mountain Top Construction is a Bay Area ADU builder serving San Rafael, San Francisco, and Las Vegas. They specialize in detached ADUs, backyard cottages, granny flats, and in-law suites, managing design, permitting, and construction.

If you’re considering adding an accessory dwelling unit to your home, contact your local ADU contractors near Sebastopol: Sightline Builders. Locally owned and operated in Sonoma County, they have over 28 years of experience in the construction ... read more

The ADU Coach offers 30+ years of experience in ADU construction, project management, and rental properties. Services range from DIY guidance to full-service builds, covering detached ADUs, garage conversions, granny flats, and backyard cottages.<... read more

Green Bee Construction Inc builds high-end ADUs, custom homes, additions, and renovations for Nevada County homeowners who want quality they can trust. Based in Grass Valley, we bring twenty years of local permitting expertise — including septic... read more

Platinum Home Builders & Design Inc. builds ADUs in Los Angeles, offering detached, attached, garage conversion, and above-garage units. They handle permits, design, and construction, with projects typically completed in 4–6 months.

Calpacific Contracting builds ADUs, casitas & garage conversions across Riverside, Orange, LA & San Bernardino Counties. 80+ years experience. Full-service: permits, design, construction & inspections handled end-to-end.

Kellow Construction offers full-service ADU construction in Santa Barbara County, handling design, permitting, and building. Options include detached, attached, garage conversion, and Junior ADUs. Key regulations cover size limits, setbacks, parki... read more

AAHA Studio is a Los Angeles architecture and interior design firm specializing in residential projects, including ADUs. They offer expertise in accessory dwelling units, granny flats, and in-law suites, blending historic character with modern des... read more

Bela Development is an LA-based design-build firm with 15+ years specializing in ADU construction, garage conversions, detached ADUs, and JADUs. They manage design, permitting, and build under one roof, delivering legal living spaces that boost pr... read more