ADU Contractors

MLS Construction builds custom DADUs in Nashville, TN. These detached accessory dwelling units serve as in-law suites, rental units, home offices, or storage. With 40+ years of experience, they offer energy-efficient, architecturally complementary designs.

USModular Inc. is a Temecula, CA ADU builder specializing in modular, prefabricated construction. Units are up to 90% factory-built, completed in ~120 days, and comply with IRC and local codes. Services include feasibility studies, design, engineering, permitting, and installation.

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.

Nance Brothers, LLC is a Charlotte, NC general contractor with 15+ years of experience in home remodeling, additions, custom decks, and ADU construction, serving Charlotte, Matthews, Waxhaw, Monroe, and surrounding communities.

Meetinghouse Builders offers custom ADU design & construction in Hollis, NH. Services include detached builds, garage conversions, basement ADUs & home additions. Features 3D renderings, style guides & full construction documents.

B&B Tiny Houses in Adams, MA offers modular ADUs starting at $99,000. Customizable, code-compliant units serve as in-law suites or rental spaces. Delivered across the US East region, with bulk discounts for 5+ orders.

Southland Remodeling is a Los Angeles ADU contractor offering detached ADUs, garage conversions, and room additions. With 20+ years experience, they handle design, permits, and construction across LA and San Fernando Valley.

Nico Pro Construction offers expert ADU construction in Sacramento, including detached units, garage conversions, in-law suites, and backyard cottages. Their quality-focused approach ensures functional, durable spaces that add long-term value to your property.

Alchemy Architects, founded in 1992 in Saint Paul, MN, specializes in prefab homes, ADUs, and the weeHouse system. Their LightHouse line offers backyard cottages and granny flats, with 60+ projects completed across the US.

Velmor Construction offers full-scope ADU construction in Reseda, covering custom design, permitting, and build. Services include detached ADUs, garage conversions, and in-law suites using quality materials and local code compliance.

Tiny Nooks is a professional ADU builder in Westport, CT, serving Fairfield County. They offer custom ADUs, garage conversions, home offices & pool houses with full project management, quality craftsmanship & on-time delivery.

Hilweh Builders LLC is an Oahu, Hawaii general contractor specializing in ADUs, home additions, and design-build remodeling. Led by Chad Hilweh, they offer integrated architect collaboration, on-budget project management, and Hawaii-specific residential construction expertise.

R Remodeling is a trusted ADU contractor in Whittier, specializing in accessory dwelling units for added living space or rental income. Experienced in detached ADUs, they manage projects from consultation to completion with minimal property disruption.

Streamline Design Group offers ADU design and permitting in San Diego, covering detached, attached, JADU, garage conversions, and multi-family units. Referenced in the State ADU handbook, they deliver permit-ready plans at 40–60% less than architect fees.

Jason Boutwell Construction, an ADU contractor in Ocala, FL, builds detached ADUs, attached units, granny flats, in-law suites, JADUs, and garage conversions. Integrating ADUs during new construction ensures better design, cost efficiency, and seamless property integration.