Seattle ADU & DADU contractor Emerald City Construction & Renovation builds accessory dwelling units across Seattle, Bellevue & Eastside. Projects cost $350K–$500K+, take 8–14 months, and support rental income, multigenerational living & more.
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Cruvers Contracting LLC builds ADUs in Snohomish, WA, tackling rural challenges like septic systems, slopes, and wooded lots. Serving areas including Lake Stevens, Monroe, and Everett with phased planning and durable, site-specific construction.
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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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Backyard ADU is a full-service ADU contractor managing every stage of accessory dwelling unit builds, including feasibility, permits, site surveys, foundations, construction, utility connections, and condo legal services.
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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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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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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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SkyDADU is a DADU builder and equity partner serving King, Snohomish, and Pierce counties in Washington State. They offer fixed-price packages, up to 100% funding, and handle permitting, construction, and condominiumization for detached accessory dwelling units.
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Zee Design & Build is a Kirkland, WA ADU contractor serving King, Snohomish, Skagit & Island Counties. Offering full-service ADU construction—garage conversions, basement units, backyard cottages & more—since 2012.
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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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Interbay Construction is a Washington State ADU contractor building guest houses, in-law suites, detached ADUs & backyard cottages. Quality materials, clear communication & reliable timelines for every accessory dwelling unit project.
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Volcano Builders is a licensed, family-owned construction company serving Seattle, Bellevue & Monroe, WA. Specializing in kitchen remodels, bathroom renovations, home additions, deck builds, and ADU construction since 2021.
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Avio Homes is a Seattle-based ADU contractor specializing in detached ADUs, backyard cottages, and in-law suites. Serving Seattle, Tacoma, and Olympia, they handle design, permitting, and construction with local zoning expertise.
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Seattle ADU is a Seattle-based contractor specializing in accessory dwelling units, including detached ADUs, garage conversions, attached ADUs, and JADUs. They manage design, permitting, and construction for homeowners seeking additional living space.
read moreRenton, Washington is one of the fastest-growing cities in the greater Seattle metro area, home to Boeing's commercial airplane manufacturing headquarters and a growing tech workforce. This rapid population growth has made Accessory Dwelling Units (ADUs) an increasingly popular housing solution for Renton homeowners looking to add rental income, house family members, or increase property value. Finding experienced ADU contractors in Renton, WA is essential to navigating the city's specific permitting requirements and building codes.
Before breaking ground, homeowners and ADU contractors in Renton must comply with the City of Renton's Development Services Division regulations. Renton follows Washington State's updated ADU-friendly legislation, which has streamlined the approval process. Key regulations include:
Skilled ADU builders in Renton, WA are experienced in constructing several types of accessory dwelling units suited to the city's diverse residential neighborhoods, from the Highlands to Kennydale and Talbot Hill:
Working with a local ADU contractor in Renton offers significant advantages. Local professionals are familiar with the City of Renton's Community and Economic Development (CED) department processes, understand soil and topography challenges common in the area, and have established relationships with local inspectors. This local expertise can significantly reduce permit approval timelines and avoid costly construction delays.
The cost of constructing an ADU in Renton typically ranges from $150,000 to $350,000 depending on size, type, finishes, and site conditions. Garage conversions tend to be more affordable, while custom detached ADUs command higher budgets. Given Renton's strong rental market driven by Boeing and nearby Amazon employees, the return on investment for a well-built ADU can be substantial.