2018 Washington State Building Code
International Building Code 2018 (IBC 2018)
Section 3109 Swimming Pools, Spas and Hot Tubs of the 2018 Washington State Building Code addresses that this code is required in the design and construction of swimming pools, spas and hot tubs:
- For the sole use of residents and invited guests at a single-family dwelling;
- For the sole use of residents and invited guests of a duplex owned by the residents; or
- Operated exclusively for physical therapy or rehabilitation and under the supervision of a licensed medical practitioner.
Other "water recreation facilities" defined in RCW 70.90.110 shall be regulated under chapters 246-260 and 246-262 WAC.