ADU Contractors

Portland, ME design-build firm O'Brien Wood & Iron has offered expert construction, renovation, historic restoration & custom millwork since 2008. With 60+ years combined experience, they serve residential & commercial clients with quality craftsmanship.

Don’t settle for a one-size-fits-all design. Whether you want something simple and efficient or stylish and custom, Laguna Construction Inc. works with your vision and your budget to create the perfect ADU for your property.

Modern Space Construction is an ADU contractor offering full-service accessory dwelling unit building, garage conversions, and remodeling. Services cover design, site prep, finishes, and project completion, helping homeowners add value, rental income, and flexible living space.

New Hampton Construction builds custom ADUs on Long Island, including in-law suites, guest houses, rental units & home offices. Projects range from $100K–$300K+, take 4–8 months, and may qualify for Plus One ADU Program grants.

Microhouse is a Seattle-based ADU builder specializing in custom detached ADUs (DADUs). They guide homeowners through zoning, design, and construction. Seattle permitted 551 DADUs in 2022, with a 40% increase in 2023. Microhouse offers site assessments and tailored DADU solutions.

Axis Construction builds ADUs and DADUs in Wichita Falls, TX. Services include backyard cottages, garage apartments, and custom units for rental income, multi-generational living, or workspace. Full project management from design to permits and construction.

Cupertino ADU is Silicon Valley's premier ADU builder, specializing in accessory dwelling units for rental income, intergenerational living, home offices, and eco-friendly housing solutions tailored to Cupertino homeowners.

At Ingenuity Construction Group, we specialize in crafting exceptional Accessory Dwelling Units (ADUs) that blend seamlessly with your existing property. With over 20 years of experience, our dedicated team ensures each ADU project is completed with meticulous attention to detail and superior craftsmanship.

Home Sweet Home Remodeling converts basements into ADUs & in-law suites across St. Louis & St. Charles. Services include design, permitting, and construction of self-contained living spaces for multi-generational living or rental income.

Evereve Builders is a Southern California construction company led by Daniel Jimenez, with 23 years of experience. Specializing in ADUs, garage conversions, granny flats, and high-end residential builds.

ProCare Construction is an Austin, Texas contractor with 30 years of experience offering general contracting, remodeling, ADUs, roofing, and more. Specializing in detached, attached, garage conversion, and basement ADUs for residential and commercial clients.

Suite Additions Portland specializes in ADU construction, garage conversions, home additions, and accessibility remodeling in the Portland metro area. Led by Tim Jorgens (CCB #201364), they offer full-service design, permitting, and build solutions.