Design-Build Firm in Portland, Oregon
Verified design-build firm businesses in Portland, OR
Showing 1–4 of 4 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.
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.
Propel Studio
Transform your Portland property with a custom ADU designed and built to maximize your space and investment. From initial concept through completion, we specialize in creating accessory dwelling units tailored to your family's needs and your home's unique architecture.
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.
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.