Montana Statewide Rule

Montana Pool Barrier Building Code Requirements

Heavy RestrictionsApplies statewide across Montana (2026)

Montana adopts the International Swimming Pool and Spa Code through state building code adoption under MCA 50-60-203. Pool barriers must be at least 48 inches high with self-closing, self-latching gates. The code applies statewide for new residential pool construction and is enforced by local building departments.

Key Facts

Statute: MCA 50-60-203
Adopted code: ISPSC
Minimum height: 48 inches
Gate latch height: 54 inches min

Source: Montana Legislature

Full Breakdown

Under MCA 50-60-203, the Department of Labor and Industry adopts the state building code, including pool barrier provisions from the International Swimming Pool and Spa Code (ISPSC). Residential pools deeper than 24 inches must have a barrier at least 48 inches high measured from the outside. Gate latches must be at least 54 inches from the ground or otherwise child-resistant. Openings in the barrier cannot allow passage of a 4-inch sphere. Cities and counties enforce through their building inspection programs but cannot adopt less stringent requirements. Hot tubs with locked covers meeting ASTM F1346 may substitute for full barriers.

Violations & Penalties

Permit denial or stop work order for non-compliant installations. Civil liability exposure if drownings occur due to inadequate barriers.

Frequently Asked Questions

Do Montana pool barrier rules apply to above-ground pools?

Yes. Pools deeper than 24 inches require barriers under the ISPSC adopted by Montana, including above-ground pools without integrated barriers.

Can Montana cities require taller pool fences than 48 inches?

Cities can adopt amendments equally or more stringent than the state code, but cannot reduce the 48-inch minimum or self-latching requirements.

Sources

See something wrong?

Help us keep this page accurate. If you notice an error or outdated information, let us know.