Detached ADU near Silverton, OR

Collins ADU Builders is a licensed Portland ADU contractor offering detached ADUs, garage conversions, JADUs, home additions & design services. Free consultations, transparent pricing, full permit coordination included.

With over 17 years of construction experience in the Portland metro area, Boss PDF helps clients turn underused space—like garages, basements, and backyards—into fully livable dwellings that add long-term value.

With over 50 years in residential & commercial construction, house lifting, and house moving - you can rest assured that your project will be handled with insight and care. At Emmert International, we’re here to make your ADU project a succe... read more

Born and Raised Construction builds ADUs in Portland, including detached units, garage conversions, backyard cottages & in-law suites. Benefits include rental income, aging in place & increased property value.

MyADU is a licensed ADU contractor in Vancouver, WA, specializing in custom accessory dwelling units across the Pacific Northwest. Founded in 2019, they offer design, permitting, and turnkey builds, completing most projects in 6–9 months.

Tweto Architecture specializes in ADU design, including detached ADUs, garage conversions & basement units. Serving Portland, Vancouver & Bend, they help homeowners add rental units, in-law suites & backyard cottages while navigating l... read more

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 r... read more

SQFT Studios, founded in 2015, is Portland's leading ADU design-build firm. Specializing in detached ADUs, garage conversions & backyard cottages, they deliver Earth Advantage Platinum-certified, sustainable builds tailored to every homeowner.... read more

Triangle Bar Group understands that embarking on an ADU project can feel overwhelming, especially with so many options, decisions, and different Portland ADU builders to choose from. That’s where they come in.

Aforma Design Studio offers white-label architectural design, rendering, and preconstruction services for builders, developers, and homeowners across the US, including ADUs, renovations, and new construction, delivered under your brand.

Das Chapin Design specializes in ADU design, garage & basement conversions, and general contracting. Offering permit support, construction consultation, and full build services via ADU Design & Build, LLC, they create efficient, livable sp... read more

Environs is a woman-owned design-build firm in Portland, Oregon, specializing in ADUs, home additions, remodels, and new construction. Licensed Oregon contractor (CCB 188377) with availability for projects breaking ground summer 2026.

Straight Line Design and Remodeling LLC offers ADU design and build services in Portland, Oregon. Serving Beaverton, Tigard, Lake Oswego & Hillsboro since 2010, they build backyard cottages for rental income, multigenerational living & add... read more

JDI Construction is a Portland-based ADU contractor offering full design-build services for detached, attached, garage conversion, basement, above-garage, and interior ADUs, including permits and eco-friendly practices.