Accessory Dwelling Units (ADUs) add self-contained living space to existing properties. Rain Creek Construction serves Clark County homeowners with ADU builds, including garage conversions, basement apartments & detached units, backed by 10+ years of custom home experience.
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Pioneer ADU is a Salem, Oregon-based family-owned ADU contractor with 25+ years of experience and 110+ completed projects. They build detached, attached, and conversion ADUs, managing design, permitting, and construction with transparent pricing.
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Jason Allen Contracting, LLC is a Portland-based contractor specializing in ADU construction, home additions, basement remodeling, kitchen and bathroom renovations, garage conversions, and master plan design services for homeowners.
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JCS Construction LLC builds custom ADUs in Oregon, including detached backyard cottages, granny flats, garage conversions, basement conversions, and pole building ADUs. They handle both standard and non-traditional structures with quality craftsmanship.
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RP Construction is a family-owned custom home builder in Salem, Oregon, with 20+ years of experience and 110+ satisfied clients. They offer transparent pricing, clear communication, and quality craftsmanship from design to move-in.
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Triangle Bar Group is a Portland, Oregon design-build contractor specializing in custom homes, additions, remodels, and ADUs. They manage design, permitting, and construction under one roof, serving Portland and Vancouver, WA homeowners.
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TaylorSmith Sustainable Construction is a Portland, Oregon contractor specializing in sustainable new homes, renovations, energy retrofits, and ADU construction. All new builds target DOE Net Zero Energy Ready certification.
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Integrity Timber Frame offers custom prefabricated timber frame home, cabin, and ADU kits in South Dakota. Using their TruFit™ System and SIPs panels, they deliver strong, energy-efficient, sustainable structures with faster assembly and potential cost savings.
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At Catalyst, our Portland ADU Builders are experts in building homes, small homes, Casitas and Accessory Dwelling Units. Trust Catalyst Construction and Remodel to bring experience and high performance to build out your new attached or unattached ADU. We bring true potential, function and value.
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SQFT Studios, founded in 2015 by Architect Eli Green, is a Portland-based ADU builder specializing in detached ADUs, garage conversions, backyard cottages, and guest suites, with 10+ years of experience.
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Conrad Construction is Portland's trusted ADU builder with 20+ years of experience. Specializing in backyard cottages, garage conversions, granny flats & detached ADUs, they handle permits, design & construction to boost property value.
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EcoCraft LLC designs & builds custom ADUs in Portland, OR, including detached ADUs, garage conversions & in-law suites. Serving Beaverton, Tigard & Vancouver, WA. Projects range from $150K–$350K. Full permitting support included.
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Mighty ADU Company is a trusted ADU contractor in Portland, OR, specializing in designing and building accessory dwelling units. They manage everything from planning and permitting to construction, ensuring quality, transparency, and stress-free results for homeowners.
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Suite Additions Portland specializes in ADU construction, garage conversions, home additions, and accessibility remodeling in the Portland metro area. Led by Tim Jorgens (CCB #201364), they offer full-service design, permitting, and build solutions.
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Shelter Solutions is Portland's trusted ADU contractor since 1997, with 250+ completed projects. Specializing in detached ADUs, backyard cottages & in-law suites, they offer full design-build services, permit handling & expert guidance throughout Oregon.
read moreWilsonville, Oregon is one of the most carefully planned cities in the Portland metro area, known for its strong community design standards and proximity to major employers like Mentor Graphics and Xerox. This master-planned character means that ADU contractors in Wilsonville must navigate a unique set of local development codes that go beyond standard Oregon state requirements. Whether you're looking to build a detached ADU, an attached ADU, or convert an existing garage, working with an experienced Wilsonville ADU contractor is essential to ensuring your project meets all local standards.
Wilsonville falls under the jurisdiction of the City of Wilsonville Community Development Department, which enforces its own land use and zoning codes. Oregon state law (particularly HB 2001) requires cities like Wilsonville to allow ADUs in single-family residential zones, but the city may still apply specific standards. Key regulations that ADU contractors must address in Wilsonville include:
Hiring a local ADU contractor familiar with Wilsonville can save you significant time and money. Local contractors understand the nuances of the city's permitting process, including submitting plans to the Community Development Department and coordinating inspections. They are also familiar with Wilsonville's stormwater management requirements, which are particularly relevant given the city's location near the Willamette River and its commitment to environmental stewardship.
A qualified ADU builder in Wilsonville, Oregon will typically guide you through the following steps:
Adding an ADU to your Wilsonville property is a smart investment, whether for rental income, multigenerational living, or increasing property value. With the right ADU contractor in Wilsonville, OR, the process can be smooth and efficient. Be sure to choose a licensed, bonded, and insured contractor with proven experience in Oregon's ADU regulations and Wilsonville's specific development standards.