Custom Home in Portland, Oregon
Verified custom home businesses in Portland, OR
Showing 1–2 of 2 listings
PORTLAND ADU
Unlock the full potential of your home by adding additional living space. We also specialize in remodeling basements, bathrooms, kitchens and bonus spaces so that you can turn your dream home into a reality.
The Powell Group
The Powell Group is a hands-on homebuilding company that specializes in the construction of custom homes and Accessory Dwelling Units (ADUs) in the greater Portland metropolitan area. They help guide you through each step of the homebuilding process and ensure customers have a positive experience and a home that will last.
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.