ADU builders · Portland, Oregon
Vetted, public-records-checked ADU builders serving Portland. We never publish builder photos or marketing copy without permission — listings sourced from public business directories are clearly marked.
Sourced from public business directories. If you own one of these businesses, claim your listing.
Portland design-build team with expertise in ADU plans for historic properties.
Serves: Portland
Portland ADU builder using modular construction methods for accessory dwelling units.
Serves: Portland
Portland and Seattle ADU builder of garage conversions, backyard cottages, and in-law suites.
Serves: Portland, Seattle
Portland and Vancouver custom ADU builder for family, rental income, and property uses.
Serves: Portland
Portland ADU construction and design firm.
Serves: Portland
Permit info for Portland
Real permit fees, timelines, and ADU-specific rules for Portland.
View Portland permit guide →Tell us about your project — budget, timeline, ADU type — and we'll route you to up to three verified builders in your area.