Basement Conversion in Oregon
JAM Concept Remodeling
918 Northeast Killingsworth Street, Portland, OR 97211
JAM Concept Remodeling is a Portland ADU contractor with 25+ years of experience in basement conversions, garage conversions, home additions, and residential remodeling, helping homeowners add functional living space and long-term property value.<... read more
Neil Kelly Portland
804 North Alberta Street, Portland, OR 97217
Neil Kelly Portland offers full ADU design and build services, including detached units, garage conversions, and basement conversions. They handle zoning, permits, and custom design for functional, energy-efficient accessory dwelling units.
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Suite Additions Portland
11825 Southwest Greenburg Road, Tigard, OR 97223
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 solution... read more
ADU Design and Build LLC
2325 Northeast 19th Avenue, Portland, OR 97212
Portland ADU Design & Build is a licensed ADU contractor serving Portland & the Willamette Valley. Specializing in detached ADUs, garage conversions & basement ADUs, they manage design, permitting & construction for lasting propert... read more
Boss PDX
252 A Avenue, Lake Oswego, OR 97034
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.
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Linnius Construction
135 Northeast Norton Avenue, Bend, OR 97701
Linnius Construction builds ADUs across Southern & Central Oregon, including Bend, Medford & Ashland. Specializing in detached ADUs, garage conversions & in-law suites, they help homeowners add value & flexible living space.
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Hammer & Hand
1011 Southeast Lincoln Street, Portland, OR 97214
Hammer & Hand builds Accessory Dwelling Units (ADUs) in Portland & Seattle. From garage conversions to detached cottages, they guide homeowners through zoning, permits, design, and costs for rental income or multigenerational living.
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ReCraft Home Remodeling
1623 Southeast 6th Avenue, Portland, OR 97214
ReCraft Home Remodeling is a Portland-based contractor specializing in whole house remodels, kitchen, bathroom, basement renovations, and ADU construction, known for clear communication, careful planning, and on-time, on-budget delivery.
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Keyser Construction Inc
452 SW Alderwood Dr, West Linn, OR 97068
Keyser Construction Inc is a Portland, OR ADU contractor since 1996. They build detached cottages, garage conversions, basement & attic ADUs. Licensed, bonded & insured, offering free estimates and permit handling across the Portland metro... read more
Kimball Construction
132 East Broadway, Eugene, OR 97401
Kimball Construction offers ADU design & construction in Eugene, OR. Specializing in detached units, garage conversions, interior conversions & attached additions, they handle zoning, permits & builds for homeowners across the Northwes... read more
Jason Allen Contracting, LLC
4804 Northeast 52nd Avenue, Portland, OR 97218
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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Neil Kelly Inc
804 North Alberta Street, Portland, OR 97217
Neil Kelly designs & builds ADUs in the Northwest, including detached cottages, garage conversions, basement/attic conversions & attached units. Expert team handles permits, local regulations & custom design for rental income, guests o... read more
Top Form Contracting
Corvallis, OR 97330
Top Form Contracting offers expert ADU construction in Corvallis, Oregon. Services include design, new builds, and garage conversions. Licensed, permit-savvy, and competitively priced for quality accessory dwelling units.
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Exceptional Home Builders Salem
1525 11th Avenue, Salem, OR 98122
Exceptional Home Builders Salem is a licensed ADU contractor with 20+ years of experience. They build backyard cottages, garage conversions & basement apartments in Salem, handling design, permitting & construction.
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EcoCraft LLC
4408 NE 38th Ave, Portland, OR 97211
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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Other cities in Oregon
What you need to know
Searching for top Basement Conversion ADU Contractors in Oregon? Our directory highlights trusted local professionals who specialize in designing and building accessory dwelling units (ADUs).
Working with a qualified Basement Conversion ADU Contractor in Oregon ensures your ADU project meets local building codes, zoning laws, and permit requirements. Whether you're planning a detached ADU, garage conversion, or backyard cottage, experienced Basement Conversion professionals can guide you through every step.
Oregon homeowners are increasingly investing in ADUs to create additional living space, generate rental income, or support multigenerational living. The Basement Conversion experts featured here bring local expertise and proven experience to help make your project a success.
Browse our listings to find the best Basement Conversion ADU Contractors in Oregon, and get started today.