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.
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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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Bicknell Builds offers ADU construction in the greater Seattle area, including detached ADUs, backyard cottages, granny flats, and in-law suites. Ideal for rental income, family housing, or added property value.
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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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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.
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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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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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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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Northwest ADU builds custom detached ADUs, garage conversions & basement ADUs across Western Washington. Serving King, Pierce & Snohomish Counties with full-service ADU construction, build-ready plans & permit management.
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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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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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Lakewood, Washington, is one of Pierce County's largest cities, with a growing population and a strong demand for additional housing solutions. As a city that borders Joint Base Lewis-McChord (JBLM), Lakewood sees consistent demand for rental housing from military families and personnel, making Accessory Dwelling Units (ADUs) an especially attractive investment for homeowners. Working with experienced ADU contractors in Lakewood, WA, can help you navigate local regulations while maximizing your property's potential.
Before beginning any ADU project in Lakewood, it's essential to understand the city's specific zoning and permitting requirements. Lakewood falls under the jurisdiction of the City of Lakewood Community Development Department, which oversees building permits and land use regulations. Key considerations include:
Professional ADU contractors in Lakewood, WA, are experienced in building several types of accessory dwelling units suited to the city's residential landscape. Given that many Lakewood properties feature ranch-style homes and larger lots, the most popular ADU types include:
Hiring a licensed and insured ADU contractor local to Lakewood, WA provides significant advantages. Local contractors are familiar with Pierce County's permitting timelines, Lakewood's specific zoning maps, and the city's inspection processes. They maintain established relationships with the Lakewood Community Development Department, which can help streamline your project approval and construction timeline.
With Lakewood's proximity to JBLM and its location along major commuter corridors like I-5 and SR-512, rental demand remains consistently strong. Homeowners who invest in a professionally built ADU can generate significant monthly rental income while also increasing overall property value. A qualified ADU contractor in Lakewood, WA, can help you design a unit that meets both local code requirements and the practical needs of today's renters, making your investment both compliant and profitable.