Arciform is a Portland-based ADU design/build firm specializing in accessory dwelling units, including garage conversions, detached ADUs & in-law suites. They handle permits, historic properties & full construction.
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As a premier ADU contractor in Portland, Sert Construction specializes in designing and building high-quality, functional ADUs. Whether you're considering an added space for rental income, additional family space, or a home office, our team of experienced ADU builders ensures a seamless integration of these units into your existing property.
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ADU-PDX is a Portland-based ADU builder with 30+ years of experience. They specialize in garage conversions, detached ADUs, granny flats & in-law suites, handling permits and zoning for hassle-free builds across the Portland metro area.
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For more than 15 years, we’ve turned backyards into beautifully crafted living spaces. From permits to finishing touches, our team knows every step inside and out. Choose the classic charm of our Traditional Series, the clean lines of our Modern Series or the efficiency and flexibility of our Urban Series. Build with the crew that wrote the ADU playbook: RG ProBuilders.
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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.
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Brothers Lane Builders, LLC specializes in ADU (Accessory Dwelling Unit) construction for homeowners in Salem, Oregon. Whether you want a backyard cottage, in-law suite, or rental unit, our experienced team guides you through every step—from planning and permitting to expert building and finishing.
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Westside ADU Builders is a licensed ADU contractor in Beaverton, OR, offering detached ADUs, attached ADUs, garage conversions, JADUs, and home additions. They manage design, permits, and construction from start to finish.
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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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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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Cronen Building Co. is an expert ADU builder specializing in granny flats, garage conversions, backyard cottages, and detached ADUs. They deliver custom accessory dwelling units that boost property value and functionality.
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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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Signature ADU is an experienced ADU builder offering full-service design and construction. Their team includes experts in architecture, general contracting, and project management, handling detached ADUs, garage conversions, granny flats, and in-law suites from start to finish.
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ADU builder Amplified Renovations serves Portland, OR and Vancouver, WA, specializing in accessory dwelling units including backyard cottages, garage conversions, and basement ADUs. Costs range from $150K–$350K+, with rental income potential of $1,500–$2,500/month.
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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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JRW Construction LLC offers full-service ADU construction, managing permits, inspections, and trade scheduling. They build detached ADUs, in-law suites, granny flats, garage conversions, and JADUs with quality finishes and energy-efficient systems.
read moreColton is a small, unincorporated rural community located in Clackamas County, Oregon. Unlike incorporated cities, Colton falls under the jurisdiction of Clackamas County's land use and zoning regulations, which significantly shapes how ADU (Accessory Dwelling Unit) contractors operate in this area. The rural character of Colton, surrounded by forests and farmland, means that ADU projects here often involve unique site considerations such as well water systems, septic systems, and larger lot sizes — all of which experienced local ADU contractors must be well-versed in handling.
Since Colton is an unincorporated community, ADU permits and approvals are governed by Clackamas County rather than a city planning department. Oregon state law, particularly House Bill 2001 and subsequent legislation, has expanded ADU allowances statewide, but county-specific rules still apply. In rural residential zones common to the Colton area, ADU contractors must navigate regulations including:
Skilled ADU contractors serving Colton, OR understand that rural builds come with distinct challenges compared to urban or suburban projects. These professionals are experienced in site preparation on sloped or wooded terrain, coordinating with Clackamas County's building department for permits, and working with subcontractors who specialize in rural utilities. Whether you are looking to build a detached ADU, an attached ADU, or convert an existing structure such as a barn or garage into a livable unit, local contractors can guide you through every step of the process.
Adding an ADU to a Colton property offers several practical advantages for rural homeowners:
When planning an ADU in Colton, it is essential to work with licensed and insured ADU contractors who have direct experience with Clackamas County's permitting process and rural construction requirements. Choosing a contractor familiar with the specific demands of unincorporated Oregon communities will save time, reduce costs, and ensure your project meets all local and state building codes from start to finish.