ADU Contractor in Portland, Oregon
Verified adu contractor businesses in Portland, OR
Showing 1–6 of 6 listings
ADU PDX
Specializing in accessory dwelling unit construction throughout Portland, we help homeowners add valuable living space to their properties with expert design and quality craftsmanship. From new builds to conversions, our team handles every aspect of bringing your ADU project to completion.
Birdsmouth Design-Build
Specialized ADU contractor serving Portland homeowners looking to add accessory dwelling units to their properties, from initial design through final construction. Brings expert knowledge of local building codes and zoning requirements to maximize your project's potential.
J.A.M Concept Remodeling LLC
Specializing in ADU construction and conversions throughout the Portland area, this contractor transforms underutilized spaces into fully functional accessory dwelling units for homeowners seeking to maximize their property's potential. With expertise in building codes and design optimization, they deliver custom ADU solutions tailored to each client's needs and budget.
Orange Splot
A housing development company and general contractor specializing in community-oriented, affordable, and green housing projects including multi-unit developments and townhomes in Portland and beyond.
Portland ADU Builders
We specialize in building accessory dwelling units throughout Portland, helping homeowners add rental income or guest space to their properties with expert design and construction. From permits to completion, we handle every aspect of your ADU project with quality craftsmanship and local expertise.
Portland ADU Contractor
Specializing in accessory dwelling unit construction and conversions throughout the Portland area, this contractor helps homeowners maximize their property value by building new ADUs or transforming existing structures into livable rental units. With expertise in local zoning requirements and permitting processes, they deliver quality ADU projects tailored to your home and budget.
Frequently Asked Questions — ADU Builders in Portland
How much does it cost to hire an ADU builder in Portland?
ADU construction costs in Portland, Oregon vary widely depending on size, type, and site conditions. Detached ADUs typically range from $150,000–$400,000+, while garage conversions and attached ADUs can be more affordable. Contact multiple builders in Portland to get accurate quotes for your specific project.
How long does it take to build an ADU in Portland?
In Portland, the ADU construction timeline typically ranges from 6 to 18 months from permit application to move-in. Permitting alone can take 2–6 months depending on Oregon local regulations. Prefab and modular ADUs often have faster timelines than site-built units.
Do I need a permit to build an ADU in Portland?
Yes, a building permit is required for ADU construction in Portland, Oregon. Your ADU builder will typically handle the permit application as part of their service. Oregon has adopted streamlined ADU permitting laws in recent years, which may reduce wait times.
What types of ADUs can be built in Portland?
Common ADU types in Portland include detached ADUs (backyard cottages), attached ADUs, garage conversions, basement conversions, and prefab/modular ADUs. The best type for your property depends on lot size, zoning, and budget. A local Portland ADU builder can advise on what's allowed on your specific parcel.