A spa or hot tub is exempt from the pool-barrier requirements if it has a safety cover meeting the ASTM F1346 standard. Without a compliant cover, the same 48-inch barrier rules that apply to pools apply to the spa.
Oregon's residential code (ORSC Appendix G) regulates spas and hot tubs like pools, but grants a key exemption: a spa or hot tub with a lockable safety cover complying with ASTM F1346 does not need a surrounding barrier. This is the practical path most homeowners use rather than fencing a hot tub. Electrical and plumbing work still requires permits and inspection through the county or city building department. If no ASTM-rated cover is provided, the spa must be enclosed by a 48-inch barrier meeting the full pool standard.
A spa without an ASTM F1346 cover and without a compliant barrier is a code violation; electrical work done without a permit can also trigger correction orders.
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See how Marion County's hot tub rules rules stack up against other locations.
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