Detached ADU in Washington
Chapman Projects
4225 335th Place Southeast, Fall City, WA 98024
Chapman Projects offers ADU design and construction in Seattle, Bellevue, and King County. With 20+ years of experience, they provide custom accessory dwelling units, detached ADUs, and backyard cottages using sustainable building practices.
read more
Tenhulzen Construction
16900 9th Avenue Southeast, Mill Creek, WA 98012
Tenhulzen Construction offers ADU and DADU construction services in Washington State, providing pre-approved and custom plans. Options suit various budgets and timelines, with benefits including added property value and flexible living spaces.
read more
Pelletier Construction Group
1150 North 84th Street, Seattle, WA 98103
Gordon T. Jacob - Multifamily | DADU | Remodel
6901 81st Street Court East, Puyallup, WA 98371
Gordon T. Jacob is a family-run ADU builder and home remodeling contractor in South Puget Sound. Specializing in detached ADUs, backyard cottages, middle housing, and full home renovations in the Tacoma area.
read more
Brutsky Builds
800 Bellevue Way Northeast, Bellevue, WA 98004
Brutsky Builds is a licensed ADU contractor in Bellevue offering full-service accessory dwelling unit construction. Services start from $210,000, covering design, permitting, and build completion in ~6 months.
read more
FTS Excavation
12714 151st Street East, Puyallup, WA 98374
FTS Excavation offers full-service ADU site development in South Puget Sound, Western Washington. Services include grading, utilities, septic systems, foundation excavation & permits. Certified, reliable ADU contractor for backyard homes & accessory dwelling units.
read more
Backyard ADU
4813 37th Avenue Northeast, Seattle, WA 98105
Backyard ADU is a full-service ADU contractor managing every stage of accessory dwelling unit builds, including feasibility, permits, site surveys, foundations, construction, utility connections, and condo legal services.
read more
Rain Creek Construction
8826 NE 339th St, La Center, WA 98629
Accessory Dwelling Units (ADUs) add self-contained living space to existing properties. Rain Creek Construction serves Clark County homeowners with ADU builds, including garage conversions, basement apartments & detached units, backed by 10+ years of custom home experience.
read more
Carriage Houses Northwest
4401 80th Street Northeast, Marysville, WA 98270
Carriage Houses NW is a Pacific Northwest ADU builder specializing in infill housing. They develop ADUs, duplexes, and townhomes, partner with homeowners, and offer fee-to-build services, leveraging WA State HB 1110 and HB 1337 legislation.
read more
Huskies Construction
1201 Monster Road Southwest, Renton, WA 98057
Huskies Construction in Renton specializes in home additions, ADUs, and DADUs. Services include garage conversions, granny flats, in-law suites, backyard cottages, and room additions, helping homeowners expand living space or generate rental income.
read more
Hammer & Hand
2450 6th Avenue South, Seattle, WA 98134
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 networks.
read more
Drew Thatcher Construction
23 Country Club Drive Southwest, Lakewood, WA 98498
Drew Thatcher Construction builds ADUs in Lakewood, WA, including detached units, attached ADUs, and garage conversions. Founded by a Navy nuclear engineer, they offer design-build services with local Pierce County expertise.
read more
Olympic View Building
10037 Washington 3, Bremerton, WA 98312
Olympic View Building is an ADU contractor offering detached ADU construction, garage conversions, in-law suites, granny flats, and JADU services. They help homeowners add value and living space while navigating zoning laws and building codes.
read more
Homecare Heroes
930 1/2 Valley Mall Parkway, Wenatchee, WA 98802
When you choose Your Home Care Heroes, you’re choosing expertise focused on one goal: creating an exceptional building experience. Our clients consistently tell us they ‘love their home and wouldn’t change a thing,’ citing our clear communication, attention to detail, and unwavering support throughout the process.
read more
NorthLight Custom Builders
9800 Harbour Place, Mukilteo, WA 98275
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-up.
read more
Other cities in Washington
What you need to know
Searching for top Detached ADU ADU Contractors in Washington? Our directory highlights trusted local professionals who specialize in designing and building accessory dwelling units (ADUs).
Working with a qualified Detached ADU ADU Contractor in Washington ensures your ADU project meets local building codes, zoning laws, and permit requirements. Whether you're planning a detached ADU, garage conversion, or backyard cottage, experienced Detached ADU professionals can guide you through every step.
Washington homeowners are increasingly investing in ADUs to create additional living space, generate rental income, or support multigenerational living. The Detached ADU experts featured here bring local expertise and proven experience to help make your project a success.
Browse our listings to find the best Detached ADU ADU Contractors in Washington, and get started today.