relative to stairway requirements in certain residential buildings.

SB 282 amends New Hampshire's building code to allow residential buildings up to four stories (four floors above ground level) to have only one stairway, instead of the usual requirement for two, under specific conditions set by the state building code review board. This change directly affects developers and builders constructing new or renovated multi-family residential buildings in this size range. The bill overrides standard International Building Code requirements for stairway provisions in these buildings, with the review board establishing the exact conditions for when a single stairway is permitted. The law became effective July 15, 2025, after being signed by the governor.