Redmond hot tubs over 24 inches deep need a building permit. A locking ASTM F1346 safety cover meets the barrier rule. A WA L&I electrical permit is required for the 240V circuit and GFCI.
Residential hot tubs and spas in Redmond follow the Washington State Building Code and IRC Appendix G. A building permit is required when water depth exceeds 24 inches. Unlike full swimming pools, a hot tub may substitute a locking safety cover meeting ASTM F1346 for the 48-inch barrier, provided the cover is in place and locked whenever the tub is not in use. The cover must be rated for the full size of the tub. A Washington State Department of Labor and Industries electrical permit is required for the 240-volt circuit, GFCI protection, dedicated disconnect within sight of the tub (5 to 10 feet), and bonding of metal parts. Plumbing work is typically minimal for self-contained spas but must comply with the Uniform Plumbing Code. Location must meet accessory structure setbacks in the Redmond Zoning Code. Hot tubs on decks or rooftops require structural engineering to verify load capacity (typically 100 pounds per square foot for water plus occupants). Draining hot tubs to stormwater systems is prohibited; water must be dechlorinated and discharged to landscaping or the sanitary sewer with utility approval.
No permit: stop work under RMC 15.04 plus double fees. Missing locking cover: barrier violation. Illegal discharge: stormwater violation under RMC 13.08.
Redmond, WA
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