Passed by the House February 10, 2026 Yeas 95 Nays 0 LAURIE JINKINS Speaker of the House of Representatives Passed by the Senate February 26, 2026 Yeas 48 Nays 0 DENNY HECK President of the Senate	CERTIFICATE I, Bernard Dean, Chief Clerk of the House of Representatives of the State of Washington, do hereby certify that the attached is SUBSTITUTE HOUSE BILL 2228 as passed by the House of Representatives and the Senate on the dates hereon set forth. BERNARD DEAN Chief Clerk Chief Clerk
Approved March 9, 2026 9:15 AM	FILED March 10, 2026
BOB FERGUSON Governor of the State of Washington	Secretary of State State of Washington

ByHouse Local Government (originally sponsored by Representatives Zahn, Duerr, Ramel, Peterson, Parshley, Lekanoff, Reed, Thomas, Gregerson, Ormsby, Hill, and Bernbaum)

AN ACT Relating to scissor stair regulations in the state building code; adding a new section to chapter 19.27 RCW; and providing an expiration date.

(1) The state building code council shall convene a technical advisory group for the purpose of recommending amendments to the international building code that would allow scissor stairs serving occupancies containing sleeping units of more than two dwelling units in which the occupants are primarily permanent in nature. The recommendations must include considerations for public health, safety, and welfare, as well as construction costs.

(2) The advisory group shall provide its recommendations to the council in time for the council to adopt or amend rules and codes as necessary for implementation in the 2027 code update to the state building code.

(3) For the purpose of this section, "scissor stairs" means two interlocking stairways with two separate exits, that are separately enclosed and divided by fire-resistance rated assemblies.

Passed by the House February 10, 2026.

Passed by the Senate February 26, 2026.

Approved by the Governor March 9, 2026.

Filed in Office of Secretary of State March 10, 2026.