Showing ordinances that apply to Dunthorpe, OR
Dunthorpe is an unincorporated community (population 1,704) in Multnomah County, Oregon. Because Dunthorpe is not an incorporated city, it does not have its own municipal code. Instead, Multnomah County ordinances apply directly to properties here. The hot tub rules rules below are the ones that govern your area.
Hot tub installations in Multnomah County require an electrical permit for the 240V circuit and must comply with Oregon Residential Specialty Code Appendix G if classified as a 'pool' (water deeper than 24 inches). A lockable ASTM F1346 safety cover may substitute for a fence on most spas. Setbacks follow underlying zoning; typical 3-5 ft from side property lines.
Hot tubs, spas, and swim spas in Multnomah County are regulated primarily through the Oregon Electrical Specialty Code (OAR 918-305) and Oregon Residential Specialty Code (OAR 918-480). An electrical permit is required for installation of the 50A 240V circuit typical for portable hot tubs — this is a $150-$250 permit in both Multnomah County Building Division and Portland BDS. GFCI protection is mandatory under NEC 680.41 and a readily accessible disconnect must be within sight and at least 5 feet from the tub. If the spa holds water deeper than 24 inches, it meets the ORSC definition of 'pool' and must comply with Appendix G barrier requirements (48-inch fence, self-closing gate). However, ORSC Appendix G allows a lockable safety cover compliant with ASTM F1346 to substitute for perimeter fencing on a hot tub — this is the most common approach. Setbacks follow zoning: Portland R-5 and R-7 zones require 5 ft side and rear setbacks for accessory structures; unincorporated Multnomah County EFU and rural residential typically require 10 ft. Drainage from the tub must be directed to a private sewer cleanout or approved drywell; discharge to storm drains is prohibited under Portland BES rules and federal Clean Water Act. Decks supporting hot tubs require engineered design — a 400-gallon hot tub with water and occupants weighs 5,000+ lbs. Indoor installations require per-NEC 680 bonding and ventilation per ORSC mechanical code.
Unpermitted electrical work: $500-$5,000 Oregon CCB penalty for contractors, stop-work for homeowners. Discharge to storm drain: Portland BES $500-$5,000 under Clean Water Act authority. Missing safety cover/barrier: correction order.
See how Dunthorpe's hot tub rules rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.