ModernSpace ADU Construction is a certified ADU builder serving Redmond, offering tailored accessory dwelling unit services. Competitive pricing, no hidden fees, and a satisfaction guarantee make them a trusted local choice.
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Puget 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.
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Sockeye Homes designs & builds custom ADUs and DADUs, offering full-service support from permits to construction. Fixed-cost packages range from $218K–$335K+, suiting retirees, families & rental income seekers.
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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 castcottages.com.
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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.
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Seattle ADUs offer rental income & flexible living. Coates Design Architects guides homeowners through detached, attached, garage & basement conversions. Costs range $200K–$350K+, with 7–11 month timelines. Sustainable design & permit-ready plans included.
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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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Greater Seattle Remodeling builds code-compliant ADUs across the Seattle metro, including detached ADUs, garage conversions, and basement apartments. They match homeowners with vetted contractors for permits, design, and construction.
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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, garage conversions & rental-ready DADUs.
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New Image Construction Management is a Washington State general contractor and building company based in Seattle, WA. With a primary focus of new home construction and renovation of residential and commercial properties.
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Neil Kelly Washington offers ADU design and build services in the Northwest, including detached ADUs, garage conversions, and attached units. Their team navigates local permits, balances design with functionality, and helps homeowners add value through custom accessory dwelling units.
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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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An Accessory Dwelling Unit (ADU) is an independent living space on a single-family property. Washington State's HB 1337 boosted ADU construction, easing zoning rules, removing owner-occupancy requirements, and capping impact fees at 50%.
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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 ADU solutions.
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Homez Remodel is a Seattle ADU builder specializing in DADUs, backyard cottages, garage conversions & basement ADUs. With 10+ years experience, they handle permits, design & construction across Seattle, Bellevue, Kirkland & more.
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.