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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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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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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We specialize in building high-quality, custom Accessory Dwelling Units (ADUs) that provide both functionality and style for homeowners in Port Orchard, WA, and the surrounding areas. Whether you’re looking to add a rental property, create a cozy space for family, or simply expand your living area, an ADU is a versatile and valuable investment.
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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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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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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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Lindal Homes offers custom ADU and DADU kit home solutions across the US and Canada. Flexible floor plans, the Lindal Elements collection, and system-built construction make adding a backyard cottage or guest suite efficient and cost-effective.
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Northwest ADU is a trusted ADU builder in Mill Creek, WA, offering full-service accessory dwelling unit construction, including detached ADUs, garage conversions, and basement conversions, with expert permit and zoning support.
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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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Our team specializes in ADU construction and home remodeling, creating functional, well-designed spaces with quality craftsmanship and attention to detail.
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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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Renton, 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.