NW Finishing is a Seattle-area ADU contractor offering full-service accessory dwelling unit design and construction. Serving Bellevue, Kirkland, Redmond, Renton, and more, they handle permits, planning, and builds for detached, cottage, and prefab... read more
The DADU Guy is a Tacoma-based detached ADU builder serving Pierce County, WA. Specializing in DADUs, garage conversions, and basement conversions, they offer 5 floor plans, guaranteed pricing, and full project management to maximize property valu... read more
Wise Choice Construction offers expert home additions & ADU builds in Seattle, WA. From detached ADUs and granny flats to in-law suites, they handle permits, zoning, and seamless integration—boosting property value and livable space.
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Cast Architecture specializes in ADU and backyard cottage design in Seattle since 2009. With 80+ projects, their Cedar Cottage is pre-approved by Seattle & Kirkland. Award-winning designs include Widner Cottage and Lichtenstein Studio. Visit c... read more
Seattle 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.
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Tacoma 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.
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Evola Builds LLC, led by Michael and Amber Evola, offers residential renovation and construction services including bathroom remodels, ADU work, garage conversions, and structural modifications, collaborating closely with architects and homeowners... read more
Era 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.
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Giant Builders Seattle is a Kent, WA general contractor with 20+ years of experience offering ADU construction, garage conversions, kitchen & bathroom remodeling, room additions, roofing, deck building, and more.
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Cornerstone Builders LLC is a Sequim-based ADU builder serving Washington's North Olympic Peninsula for 40+ years. This certified design-build firm manages all phases—design, permitting, and construction—offering transparent, process-driven AD... read more
Home Care Contractors builds ADUs in King County, including DADUs, garage conversions, and basement units. They handle permits, design, and construction. Costs range from $300K–$700K, with timelines of 7–13 months total.
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Alfa Framing offers residential construction services including structural framing, siding installation, roofing, and ADU/DADU construction. Serving new builds and additions, they bring decades of experience and a solution-oriented approach.
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ADU Builders Seattle (Maksymov Brownstone LLC) specializes in detached ADU construction across Seattle & King County. Licensed & bonded, they handle zoning, permits, and SDCI approvals. Services include backyard cottages, two-story units, ... read more
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.
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:
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:
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.