Detached ADU

Founded in 1986 by Mike Morain, KGM Construction is an A+ BBB-rated contractor offering residential remodeling, new home construction, ADUs, granny flats, garage conversions, commercial builds, and storm damage restoration with 35+ years of experi... read more

Expert Designers is an NYC-based ADU architect firm helping homeowners convert garages, basements, and backyards into legal accessory dwelling units. Services include design, permit filing, and construction support under NYC's City of Yes zoning u... read more

JT Collective Tiny Homes, a licensed Clovis, CA dealer and manufacturer, builds custom tiny homes on wheels for ADUs, in-law suites, or primary residences, offering upgrades like SIPs, heated flooring, and ADA-compliant designs tailored to client ... read more

Hammer & Hand is a Portland & Seattle general contractor with 30+ years of experience in new homes, remodels, ADUs & commercial builds. Employee-owned, they offer expert craftsmanship, custom woodwork & trusted subcontractor networ... read more

UNI Construction builds detached and attached ADUs, handling site planning, structural engineering, and permit-ready drawings. Options include backyard cottages, granny flats, and in-law suites, all code-compliant and tailored to your property.read more

All Under One Roof builds ADUs, granny flats, garage conversions & in-law suites. Licensed, insured, 31+ years experience. Full-service ADU contractor handling design, permits & construction with a lifetime workmanship warranty.

Build-Small is an ADU contractor specializing in detached ADUs, garage conversions, in-law suites, JADUs, and backyard cottages. They guide homeowners through zoning, permitting, and construction for efficient, compact secondary living spaces.

Bayside Builders Group is a licensed Bay Area ADU contractor with 25+ years of experience. Services include detached ADUs, garage conversions, and in-law suites. Serving Oakland, San Jose, San Francisco, and surrounding counties.

Moss Architecture is a leading Chicago ADU contractor specializing in accessory dwelling units, coach houses, and garage conversions. Following the 2021 Chicago ADU ordinance, they design detached ADUs, in-law suites, and backyard cottages across ... read more

Oak Coast Construction is a California-based contractor specializing in ADU development, custom homes, design-build, remodeling, and commercial construction. They also offer printing services including blueprints and signage via Oak Coast Printing... read more

Golden State Buildings LLC, based in Sanger, CA, builds ADUs across Central California. They offer 4 floor plans (420–1,200 sq ft), handle permits, and provide financing options. Free delivery within 50 miles.

New Era Home Services LLC is a full-service ADU builder specializing in custom accessory dwelling units, including granny flats, rental units, and garage conversions, guiding homeowners through design, permitting, and construction.

ProStruct Engineering offers ADU structural engineering services across California, providing permit-ready plans and calculations for detached ADUs, garage conversions, granny flats, and more, with a 2–3 week turnaround.