City · Oregon
ADU rules in Hillsboro
These are the primary sources for accessory dwelling unit regulations in Hillsboro: the city's own zoning code, planning department pages, and permit guides. Start here before talking to anyone: the rules below are what your permit reviewer will apply.
ADU regulations
- hillsboro-oregon.govOfficial sourceReviewed July 2026https://www.hillsboro-oregon.gov/our-city/departments/community-development/projects/code-amendments
- hillsboro-oregon.govOfficial sourceReviewed July 2026https://www.hillsboro-oregon.gov/services/permitting-center/developers-contractors/land-use-planning-approval
- ecode360.comOfficial sourceReviewed July 2026https://ecode360.com/44407044#44407048
Short-term rental rules
Planning to rent your ADU on Airbnb or VRBO? Hillsboro regulates short-term rentals separately; check these before counting on nightly rental income.
Oregon statewide law also applies
Oregon sets baseline ADU rights at the state level. Where local rules are stricter than state law allows, state law usually wins, so both are worth reading.
See Oregon statewide rulesSpotted something outdated?
Zoning codes change. If a link is dead or Hillsboro has updated its ordinance, report it and we'll verify against the official source.
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