ADU Contractors

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.

Braverman Design is a Durham, NC residential architecture firm specializing in ADUs, renovations, new construction, and aging-in-place design. Led by registered architect Jessie Braverman, they offer schematic design, permit drawings, and pre-designed ADU plans.

J.A. Mejia Construction is a licensed ADU builder & home addition contractor in Sonoma County & the Bay Area. Services include detached ADUs, garage conversions, in-law suites & second-story additions in Santa Rosa, Petaluma & beyond.

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 completion.

The Powell Group is a Portland-area custom home and ADU builder led by Mitch Powell, with 20+ years of experience. They've completed 500+ homes and 30+ ADU projects, offering expert construction from planning to completion.

Urban ADU builds energy-efficient accessory dwelling units in Colorado Springs, CO. Featuring spray foam insulation, solar options, Zero Energy Ready certification, and 3D planning tools, they simplify ADU construction from permits to placement.

Utah Structures offers customizable ADU buildings in two styles: the modern ADU Series and rustic Heartland Series. Buyers can choose size, color, doors, windows, and add-ons for guest suites, rentals, or home offices.

ADU Homes is a full-service ADU contractor in Los Angeles & Orange County offering design-build solutions. They handle design, permitting & construction with fixed pricing. Options include studios, 1-3 bed units & carriage units.

Hammer Contractors builds ADUs in Washington DC, including detached units, garage conversions, and basement apartments. They handle zoning compliance, permits, and full construction, helping homeowners add rental income or family living space.

Bethoney Builders LLC is a South Shore residential contractor specializing in ADU construction, home additions, custom builds, and renovations. Services include in-law suites, garage conversions, finished basements, and structural repairs.

Cocoon Homes builds factory-made ADUs and tiny homes in Utah and beyond. Offering towable, skirted, or foundation-anchored units, they serve homeowners, developers, and disaster relief needs with scalable, durable, permitted housing solutions.

ADU San Diego is a licensed contractor specializing in accessory dwelling unit design and construction across San Diego County. Services include garage conversions, detached ADUs, and JADUs, with costs ranging from $100,000–$400,000.

Shermans Builders Inc. is a licensed San Diego ADU contractor with 150+ projects completed. Services include detached ADUs, garage conversions, and JADUs, covering permits, design, and construction with upfront cost estimates.

Joel & Co. Construction, serving Los Angeles since 1983, offers expert residential & commercial construction, including custom homes, kitchen & bathroom remodels, ADUs, room additions, and general contracting across Beverly Hills, Santa Monica & beyond.

Maui Eco Built offers prefab & custom ADUs, granny flats, and homes on Maui. Panelized construction cuts build time. Structures range from permit-exempt under 200 sq ft to 3,000 sq ft homes. Design, permits & site planning available.