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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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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Harjo Construction builds AADUs & DADUs in Seattle with 300+ projects since 2010. Costs range $275K–$650K, max 1,000 sq ft, 4–6 month build time. Seattle removed owner-occupancy rules, boosting ADU rental potential.
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Olympic View Building is an ADU contractor offering detached ADU construction, garage conversions, in-law suites, granny flats, and JADU services. They help homeowners add value and living space while navigating zoning laws and building codes.
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H26 Builders is a Seattle ADU contractor offering attached ADUs, detached ADUs, and garage conversions. Services include design consultation, permitting support, and project management to help homeowners add functional living or rental space.
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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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DIGS is a trusted ADU builder serving King & Snohomish County, WA. They offer custom ADU/DADU design, permitting, construction, and site development, helping homeowners add rental income, property value, and flexible living space.
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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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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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Gravity Builders LLC is a licensed ADU contractor and custom home builder in Renton, WA. Specializing in ADU/DADU construction, custom homes, outdoor living spaces, and concrete work, they deliver quality craftsmanship with transparency and integrity.
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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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Emerald ADU Builders Seattle specializes in ADU design, permitting, and construction. They build detached ADUs, attached ADUs, and garage conversions, serving Seattle homeowners with quality craftsmanship and transparent pricing.
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LYD Construction is a Seattle-area ADU builder & remodeling contractor with 25 years of experience. Services include kitchen, bathroom, basement renovations, deck building & ADU construction. Financing up to $200,000 available. Based in Bellevue, WA.
read moreEdmonds, Washington is a charming waterfront city nestled along the shores of Puget Sound in Snohomish County. Known for its vibrant arts scene, historic downtown, and stunning views of the Olympic Mountains, Edmonds is a highly desirable place to live. As housing demand continues to grow in the greater Seattle metro area, many homeowners in Edmonds are turning to Accessory Dwelling Units (ADUs) as a smart solution for adding living space, generating rental income, or housing family members. Finding experienced ADU contractors in Edmonds, WA is the critical first step toward making that vision a reality.
Before breaking ground, it's essential to understand the local rules that govern ADU construction in Edmonds. The City of Edmonds has specific zoning codes under its Edmonds Community Development Code (ECDC) that regulate ADU development. Key regulations include:
A knowledgeable ADU contractor in Edmonds will be well-versed in these local codes and can help navigate the permitting process through the Edmonds Building Division efficiently.
Choosing the right contractor for your ADU project in Edmonds requires careful consideration. The city's unique geography — including sloped lots, older neighborhoods, and proximity to environmentally sensitive shoreline areas — means that local experience truly matters. Look for contractors who offer:
With Edmonds' strong real estate market and proximity to Seattle, Lynnwood, and the Edmonds-Kingston ferry terminal, an ADU can significantly increase your property's value and rental appeal. Whether you're building a backyard cottage, garage conversion, or basement ADU, working with a qualified Edmonds ADU contractor ensures your project meets all local standards while maximizing your investment in this beautiful Pacific Northwest community.