Idaho adopts the International Residential Code statewide under Idaho Code 39-4109, which requires residential swimming pools, spas, and hot tubs to be enclosed by a barrier at least 48 inches high with self-closing, self-latching gates.
Idaho Code 39-4109 designates the International Residential Code (IRC) as the state residential building code. IRC Appendix G and Section AG105 require residential pools, spas, and hot tubs deeper than 24 inches to be enclosed by a barrier at least 48 inches high measured from the outside. Openings cannot allow a 4-inch sphere to pass, and gates must be self-closing and self-latching, opening outward, with latches at least 54 inches above the ground. Local jurisdictions adopting building codes under Idaho Code 39-4116 must enforce standards no less stringent than state requirements.
Building a pool without a compliant barrier can result in stop-work orders, denial of certificate of occupancy, civil fines, and personal injury liability. Local enforcement varies but state minimums apply.
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