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ADU Contractors near Bothell, WA
Zee Design & Build
570 Kirkland Way, Kirkland, WA 98033 6.7 milesZee Design & Build is a Kirkland, WA ADU contractor serving King, Snohomish, Skagit & Island Counties. Offering full-service ADU construction—garage conversions, basement units, backyard cottages & more—since 2012.
read moreHuskies Construction
1201 Monster Road Southwest, Renton, WA 98057 21 milesHuskies 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 incom... read more
Tacoma DADU
7809 Pacific Avenue, Tacoma, WA 98408 37.9 milesTacoma DADU Builders is a premier detached ADU builder serving Tacoma and Puget Sound. With 40+ years of experience, they offer turnkey ADU construction—design, permitting, and build—for investors, homeowners, and first-time buyers.
read moreSeattle Remodeling LLC
17202 Aurora Avenue North, Shoreline, WA 98133 6.7 milesSeattle Remodeling LLC specializes in ADU construction in Seattle, offering mother-in-law suites, backyard cottages, garage conversions, and granny flats. They help homeowners add value, rental income, and flexible living space.
read moreNorthwest ADU
1201 Pacific Avenue, Tacoma, WA 98402 37.6 milesNorthwest ADU is a full-service ADU contractor in Western Washington specializing in detached ADUs, garage conversions, and basement conversions. Serving Pierce, King, and Snohomish Counties, projects range from $180K–$350K+, taking 6–10 month... read more
North West Builders & Renovations
1135 Lake Washington Boulevard North, Renton, WA 98057 18.7 milesGordon T. Jacob - Multifamily | DADU | Remodel
6901 81st Street Court East, Puyallup, WA 98371 42 milesGordon 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 moreFTS Excavation
12714 151st Street East, Puyallup, WA 98374 45.3 milesFTS 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 &... read more
Carriage Houses Northwest
4401 80th Street Northeast, Marysville, WA 98270 20.6 milesCarriage 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 moreElite Team Builders
701 5th Avenue, Seattle, WA 98104 13.1 milesElite Team Builders Inc. designs & builds ADUs—detached units, garage conversions & backyard cottages—in Seattle, Portland & Los Angeles. They offer custom design, quality materials & transparent pricing for lasting residential... read more
Love Construction
17025 33rd Avenue South, SeaTac, WA 98188 22.7 milesLove 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.
read morePuget Sound ADU Builders
4712 South Morgan Street, Seattle, WA 98118 16.1 milesPuget Sound ADU Builders is a leader in ADU construction in western Washington state, excelling in design, construction, finishing, and permitting ADUs, DADUs, backyard cabins, garage conversions, duplexes, town homes, and multi-unit projects.
read moreEra Builders
911 Northeast 70th Street, Seattle, WA 98115 8.4 milesEra Builders is a Seattle-based ADU contractor offering detached ADU construction, design, permitting, remodeling, and commercial renovations. They handle full ADU projects compliant with Seattle zoning rules, using sustainable practices.
read moreTenhulzen Construction
16900 9th Avenue Southeast, Mill Creek, WA 98012 5 milesTenhulzen 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 moreOther cities in Washington
- Bainbridge Island
- Battle Ground
- Bellevue
- Bellingham
- Black Diamond
- Bremerton
- Burbank
- Camas
- Edmonds
- Everett
- Fall City
- Federal Way
- Kennewick
- Kent
- Kirkland
What you need to know
ADU Contractors in Bothell, WA: Building in a Rapidly Growing Tech-Adjacent Community
Bothell, Washington has experienced remarkable population growth over the past decade, largely driven by its proximity to major tech employers in the greater Seattle-Eastside corridor. This growth has created significant demand for additional housing, making Accessory Dwelling Units (ADUs) an increasingly popular solution for homeowners. Whether you're looking to house extended family, generate rental income, or increase your property value, working with experienced ADU contractors in Bothell, WA is essential to navigating the local building landscape successfully.
Understanding Bothell's ADU Regulations and Permitting Requirements
Bothell operates under its own municipal code, and portions of the city fall under both Snohomish County and King County jurisdictions, which can add complexity to the permitting process. Homeowners and contractors must carefully determine which jurisdiction governs their specific parcel before beginning any ADU project. The City of Bothell generally allows ADUs in single-family residential zones, but there are important rules to follow:
- Maximum ADU size is typically limited to 1,000 square feet or a percentage of the primary dwelling's square footage
- Owner-occupancy requirements may apply, requiring the homeowner to reside in either the primary residence or the ADU
- Setback requirements, lot coverage limits, and height restrictions must all be carefully observed
- Detached ADUs, attached ADUs, and DADUs (Detached Accessory Dwelling Units) each have distinct approval pathways
- Utility connections, including water and sewer, must meet current city standards
What to Look for in a Bothell ADU Contractor
Choosing the right ADU contractor in Bothell means finding a professional who understands local zoning codes, has experience pulling permits through the City of Bothell's Community Development Department, and can manage the full scope of construction from design to final inspection. The best contractors will offer:
- Familiarity with Bothell's specific municipal code and dual-county jurisdiction nuances
- In-house or partnered architectural and design services
- Transparent project timelines and cost estimates
- A proven track record of completed ADU projects in the Bothell area
- Knowledge of Washington State energy code compliance requirements
The Value of ADUs in Bothell's Housing Market
Given Bothell's strong real estate market and high rental demand — fueled by workers at nearby companies and students attending University of Washington Bothell — an ADU can deliver exceptional return on investment. Rental rates in the area remain competitive, and a well-built ADU can significantly increase your property's overall market value.
Working with a licensed, insured, and locally experienced ADU contractor in Bothell, Washington ensures your project meets all code requirements, stays on budget, and is completed efficiently. Start by consulting with a contractor who specializes in ADU construction and has a deep understanding of Bothell's unique regulatory environment.