ADU builders · Seattle, Oregon
Vetted, public-records-checked ADU builders serving Seattle. We never publish builder photos or marketing copy without permission — listings sourced from public business directories are clearly marked.
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Portland and Seattle ADU builder of garage conversions, backyard cottages, and in-law suites.
Serves: Portland, Seattle
Permit info for Seattle
Real permit fees, timelines, and ADU-specific rules for Seattle.
View Seattle 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.