ADU Contractors

Calcons is a California-based ADU contractor specializing in detached ADUs, garage conversions, JADUs, granny flats, and backyard cottages. They manage permits, design, and construction for homeowners seeking to add livable space.

Whether you want to make space for a new hobby, a new family member, or just enhance your living spaces, we’ve got you covered! Home additions are a great way to enlarge your home’s space and improve comfort and functionality. Our team in the ... read more

Summit 48 Construction builds luxury ADUs in NH's Lakes Region, including guest houses, in-law suites & carriage homes. Custom finishes, zoning knowledge & full project management from design to completion.

Honua Builders is a Kihei, Maui-based construction firm offering luxury custom homes, remodels, additions, and ADU construction across Hawai'i. Led by two licensed B General Contractors, they deliver hands-on, high-quality residential and commerci... read more

High Power Construction, based in Compton, CA, offers ADU contractor services including detached units, garage conversions, granny flats, and in-law suites. Serving the greater Los Angeles area with quality craftsmanship.

ELS Home Builders specializes in ADU design and construction across San Jose, Palo Alto & the SF Bay Area. Services include granny flats, in-law suites, garage conversions & detached ADUs for multigenerational living.

ELoghomes offers EasyCabin™ ADU log cabin kits priced $35,000–$55,000, featuring solid Eastern White Pine walls, Andersen 400 Series windows, and 80 lb. snow load specs for year-round durability. Ideal granny flats or rental units.

Cahla Construction Group is a licensed ADU contractor in Los Angeles offering ADU construction, garage conversions, kitchen & bathroom remodeling, home additions, and general contracting for residential and commercial clients.

Eco-friendly ADU builder specializing in accessory dwelling units, granny flats, and JADUs. Uses recycled materials and steel-skinned insulated panels. Flexible designs, fast build times. Service-disabled veteran-owned with veteran housing and emp... read more

NorthLight Custom Builders offers ADU construction in King & Snohomish County. Services include attached & detached units for rental income, family living, or home offices. Structured process from consultation to one-year warranty follow-u... read more

3 Day Kitchen & Bath is a trusted ADU contractor in San Diego offering full-service accessory dwelling unit construction. From garage conversions to detached ADUs, they manage every project phase with a structured, professional approach.

Coli Studio is a trusted ADU builder in Arizona and Florida, specializing in custom accessory dwelling units, casitas, granny flats, and in-law suites. They manage design, permits, and construction end-to-end for a stress-free experience.

If you’re considering an attached or converted ADU, or wanting to create a one-of-a-kind freestanding cottage, we can help. The expertise, craftsmanship and environmental awareness we bring to remodeling and custom homebuilding are a great fit f... read more

Acton ADU is a Bay Area ADU contractor founded by Stan Acton with 30+ years of experience. They offer full-service ADU design, construction, garage conversions, and permitting across San Jose and the broader Bay Area.