6 county-level rules, plus city-specific rules for 3 cities in Multnomah County, Oregon.
Verified from official government sources
In unincorporated Multnomah County, short-term rental of an entire home or ADU is generally NOT permitted. Multnomah County does not have a specific STR permit program. STR use in residential zones is governed by general zoning rules and typically requires a conditional use permit or is prohibited.
STRs in Multnomah County unincorporated areas are subject to state noise standards and county code. Since entire-home STRs are generally prohibited in unincorporated areas, any STR operating with approval must comply with county nuisance and neighbor-protection standards.
Multnomah County collects a Transient Lodging Tax (TLT) for lodging businesses in the county outside Portland city limits. The county TLT is 5.5% for unincorporated areas. Oregon State TLT is 1.5% (ORS 320.300). Gresham has its own 8% city TLT in addition.
Multnomah County unincorporated areas have no specific STR parking rules. Standard county zoning and land use requirements apply. Off-street parking requirements for residential uses are set by Multnomah County Zoning Code Chapter 39.
Portland caps STR occupancy at 2 adults per bedroom plus 2 additional under PCC 33.207 (Accessory Short-Term Rentals). Multnomah County unincorporated areas limit STRs to 5 guest rooms under MCC 39.3085. Gresham requires Type I occupancy in single-family zones. All cities require operators to post maximum occupancy and a local contact number.
Portland requires $1 million liability insurance for all Accessory Short-Term Rentals under PCC 33.207.060. Multnomah County unincorporated STRs require $500,000 minimum under MCC 39.3085. Platform-provided coverage (Airbnb AirCover, Vrbo) may satisfy minimums if it meets the primary-coverage requirement. Proof of insurance must be submitted at permit application and renewal.
3 cities in Multnomah County have their own short-term rentals rules. Each link goes to that city's dedicated page with code citations.
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