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Council reports progress on single‑exit and multiplex‑housing code work

Washington State Building Code Council · November 14, 2025

Summary

The Building Code Council’s tags reported near‑final decisions on single‑exit appendices and substantial progress on an IRC‑based multiplex housing proposal with target tag approvals and full council review planned for December.

Council member Roger reported progress on two related code initiatives: single‑exit provisions and a multiplex‑housing approach under the residential code.

Roger said the single‑exit work (which would allow prescriptive single‑exit solutions up to specified heights under a required appendix) has passed through the issues log and that the tag hopes to forward the updated document to the full council at its Dec. 2 tag meeting and then for final council consideration by mid‑December. ‘‘We are through our whole issue log, so we've agreed on everything,’’ Roger said.

On multiplex housing, which would allow up to six‑unit, three‑story buildings under the IRC in prescribed conditions, Roger said the group is about three‑quarters through its issues log with further meetings scheduled on Nov. 18 and Dec. 16 to finalize decisions and incorporate them into a posted document for council action and public review.

Roger said both items will use appendices (not optional tools) because state legislation requires statewide adoption of the approaches when adopted.

Next steps: tags will finalize documents and post updated materials ahead of tag and full‑council actions scheduled before the end of the year.

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