ADU Builder in Portland, Oregon
Verified adu builder businesses in Portland, OR
Showing 1–7 of 7 listings
Hammer & Hand
Hammer & Hand is a construction company specializing in residential and commercial projects, with a focus on high-performance building and custom woodshop services.
Neil Kelly
Neil Kelly is a design/build remodeling company serving the Northwest since 1947. They offer custom ADU design and construction services, bringing expertise, craftsmanship, and environmental awareness to remodeling and custom homebuilding.
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.
PortlandADU.com
Portland's premier resource for everything related to Accessory Dwelling Units. Powered by GatherADU, we bring together top architects, contractors, and ADU specialists under one roof.
Relevant Buildings
From container homes to wood-framed homes, we\'re your local ADU builder. Our goal is to make your home building journey as easy as possible. From financing help, design, permitting, and building, we provide everything you’ll need to make your ADU dream a reality.
Shelter Solutions
At Shelter Solutions, we use a streamlined ADU Design-Build model and 28 years of expertise that merge every stage of your project under one roof. By focusing on both Portland ADU design and construction, you benefit from minimized delays, lower expenses, and top-tier craftsmanship.
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.