Twin Brothers Group is a licensed framing contractor in Washington State specializing in ADU, DADU, garage conversions, and home additions across King and Snohomish County, serving Seattle-area GCs and owner-builders.
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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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Raincap Construction, a Seattle-based family-owned contractor, specializes in ADU and DADU construction. They build backyard cottages, in-law suites, and garage conversions, helping homeowners add living space, rental income, and property value.
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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.
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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.
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Better Builders is a Seattle-based general contractor specializing in residential remodeling, garage conversions, ADUs, kitchen and bathroom remodels, basement finishing, deck repairs, and exterior work, with dedicated project management.
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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.
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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.
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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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Lakeside ADU & Home Planning, based in Lake Stevens, WA, is a full-service ADU builder serving the Puget Sound Region. They specialize in backyard cottages, mother-in-law suites, garage conversions, and new builds, managing design, permitting, and construction.
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Seattle's 2019 ADU law changes made it easier to build accessory dwelling units on single-family lots. DADUs can't exceed 50% of the main home's size. No parking required. New detached ADUs start around $350,000.
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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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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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Seattle's trusted DADU & ADU builder offers custom builds, ADU conversions, and prefab cabins. Transparent pricing, expert guidance, and hands-on construction help homeowners add lasting value with backyard cottages and granny flats.
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Avead is an ADU contractor offering full-service accessory dwelling unit construction, including attached, detached, junior ADUs, garage conversions, and custom builds. With 20+ years of experience, transparent pricing, and a 5-year warranty.
read moreMukilteo is a charming waterfront city in Snohomish County, Washington, known for its scenic views of Puget Sound, the historic Mukilteo Lighthouse, and its proximity to Paine Field (Snohomish County Airport). This proximity to an active airport means that ADU contractors in Mukilteo must be especially mindful of FAA height restrictions and flight path regulations when designing and constructing accessory dwelling units. Working with an experienced local ADU contractor ensures your project stays compliant with these unique geographic and regulatory constraints.
ADU construction in Mukilteo is governed by the City of Mukilteo's Municipal Code and must align with Washington State's updated ADU-friendly legislation. Homeowners looking to add an accessory dwelling unit must navigate local zoning rules carefully. Key regulations include:
Hiring a qualified ADU contractor in Mukilteo, WA means working with professionals who understand the local permitting process through the City of Mukilteo's Community Development Department. The permitting process typically involves submitting detailed site plans, architectural drawings, and engineering reports. Given Mukilteo's hilly terrain and proximity to Puget Sound, geotechnical assessments and stormwater management plans may also be required. Experienced local contractors can streamline this process, reducing delays and unexpected costs.
Mukilteo homeowners commonly pursue several types of ADU projects, including:
Choosing a licensed and experienced ADU contractor familiar with Mukilteo, Washington is essential for a successful project. Local contractors understand the city's unique topography, soil conditions, airport proximity regulations, and municipal permitting requirements. They maintain relationships with local inspectors and can help you maximize your property's potential while ensuring full compliance with all applicable codes. Whether you're adding rental income or housing for family members, a trusted Mukilteo ADU contractor is your best investment.