The bill introduces a new section to chapter 19.27 of the Revised Code of Washington (RCW) that mandates the state building code council to form a technical advisory group. This group is tasked with recommending amendments to the international building code to permit the use of scissor stairs in buildings with more than two dwelling units primarily occupied by permanent residents. The recommendations must take into account public health, safety, welfare, and construction costs, and are to be submitted in time for the council to incorporate them into the 2027 state building code update.

Additionally, the bill defines "scissor stairs" as two interlocking stairways with separate exits, enclosed and divided by fire-resistance rated assemblies. The new section will remain in effect until January 1, 2031, after which it will expire. This legislative action aims to enhance building safety and accessibility while considering the practical implications of construction costs.