Renovate Builders

4555 39th Avenue Southwest, Seattle, WA 98116 28.5 miles

BB Builders Pro

801 Southwest 16th Street, Renton, WA 98057 32.6 miles

BB Builders Pro specializes in ADU construction, garage conversions, home additions, and detached backyard cottages. Services include custom design, permitting, zoning compliance, and renovations—ideal for rental income or family housing.

Emerald City Construction & Renovation

2571 152nd Avenue Northeast, Redmond, WA 98052 20.4 miles

Eco-Friendly Luxury Builds

Seattle ADU & DADU contractor Emerald City Construction & Renovation builds accessory dwelling units across Seattle, Bellevue & Eastside. Projects cost $350K–$500K+, take 8–14 months, and support rental income, multigenerational living & more.

Cascadia ADU

901 1st Street, Snohomish, WA 98290 0.6 miles

10 years in business Eco-Friendly

Cascadia ADU builds attached, detached, garage & basement ADUs across King, Snohomish, Skagit & Chelan Counties, WA. Full-service design, permitting & construction completed in 8–10 weeks with 10+ years experience.

True Built Home

3403 North Proctor Street, Tacoma, WA 98407 48.4 miles

Eco-Friendly

True Built Home builds custom ADUs in Washington & Oregon, offering 14 floor plans from 495–1,199 sq ft, priced from $119,900. Plans include granny flats, in-law suites & backyard cottages with transparent pricing and customizable designs.

Love Construction

17025 33rd Avenue South, SeaTac, WA 98188 34.2 miles

Eco-Friendly

Love Construction builds ADU & DADU units in Seattle & Puget Sound to Passive House standards. Attached ADUs cost $85K–$280K; DADUs $175K–$550K. Includes permitting, energy modeling & a 5-year warranty.

Harjo Construction

4900 15th Avenue Northwest, Seattle, WA 98107 22.3 miles

15 years in business

Harjo Construction builds AADUs & DADUs in Seattle with 300+ projects since 2010. Costs range $275K–$650K, max 1,000 sq ft, 4–6 month build time. Seattle removed owner-occupancy rules, boosting ADU rental potential.

Exceptional Home Builders Seattle

1525 11th Avenue, Seattle, WA 98122 23.9 miles

Licensed 20 years in business Luxury Builds

Exceptional Home Builders is a Seattle ADU contractor with 20+ years of experience. They offer full-service ADU construction, design-build, permitting, interior design, and renovations for backyard cottages, garage conversions, and basement units.

North West Builders & Renovations

1135 Lake Washington Boulevard North, Renton, WA 98057 29.8 miles

Modern ADU Plans

3660 Lavender Ln NE, Bainbridge Island, WA 98110 28.1 miles

Explore pre-designed ADU floor plans from Modern ADU Plans — studio, 1-bed, 2-bed, garage conversions & more. Save time, reduce costs & maximize property value with ready-to-build accessory dwelling unit designs.

Deane Home Services

17837 1st Avenue South, Normandy Park, WA 98148 35.3 miles

Licensed Luxury Builds

Deane Home Services builds ADUs in South King County, WA, including garage conversions, basement remodels, and detached backyard cottages. Licensed, bonded & insured. Serving Kent, Renton, Federal Way & more.

Other cities in Washington

What you need to know

Searching for top Attached ADU ADU Contractors in Snohomish, Washington? Our directory highlights trusted local professionals who specialize in designing and building accessory dwelling units (ADUs).

Working with a qualified Attached ADU ADU Contractor in Snohomish 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 Attached ADU professionals can guide you through every step.

Snohomish homeowners are increasingly investing in ADUs to create additional living space, generate rental income, or support multigenerational living. The Attached ADU experts featured here bring local expertise and proven experience to help make your project a success.

Browse our listings to find the best Attached ADU ADU Contractors in Snohomish, Washington, and get started today.

Attached ADU near Snohomish, WA