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ADU Builders in Oregon

Find the best ADU builders and contractors across Oregon. Browse 14 cities with 51 verified builders ready to help with your accessory dwelling unit project.

51builders
14cities

Top Cities in Oregon

All Cities in Oregon

Top Rated Builders in Oregon

FeaturedVerified

Urban Home Works

Corvallis, OR
5.0(21)
ADU ConstructionBackyard Cottage

Specializing in ADU construction and related services in Corvallis, OR.

Arciform

Portland, OR
4.9(4)
ADU Construction

ADU design and construction for historic properties throughout Portland means balancing complex district requirements with respect for architectural character. From garage conversions to detached units, Arciform creates Accessory Dwelling Units that are functional, compliant, and complement your property’s heritage.

ADU Services in Oregon

ADU Builders

Full-service ADU construction companies that handle everything from design to completion.

Garage Conversion

Specialists in converting existing garages into livable accessory dwelling units.

Prefab ADU

Companies that manufacture and install prefabricated accessory dwelling units.

Custom ADU

Builders specializing in custom-designed ADUs tailored to your property and needs.

Backyard Cottage

Builders focused on detached backyard cottages and guest houses.

In-Law Suite

Contractors specializing in attached or detached in-law suites and granny flats.

ADU Design-Build

Firms offering integrated design and construction services for ADUs.

Tiny Home Builders

Builders specializing in tiny homes and compact living spaces.

ADU Contractors

Licensed general contractors experienced in ADU construction and renovation.

ADU Permit Services

Companies that help navigate ADU permitting, zoning, and regulatory requirements.

About ADU Construction in Oregon

Oregon is home to a growing ADU market with 51 builders across 14 cities. Accessory dwelling units are becoming increasingly popular in Oregon as homeowners look for ways to add living space, generate rental income, or provide housing for family members. Whether you're looking for a prefab ADU, custom-built backyard cottage, garage conversion, or in-law suite, our directory helps you find experienced local builders who understand Oregon's building codes and permit requirements.

ADU regulations vary by city and county in Oregon. Many municipalities have recently updated their zoning laws to make it easier to build ADUs. Our listed builders can help you navigate local regulations, obtain necessary permits, and complete your project on time and within budget.

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