604.1 Scope. Level 3 alterations apply where one of the criteria is exceeded:
1. The work meets or exceeds the threshold of either substantial improvement or substantial damage; or
2. The alteration area exceeds 50 percent of the building area.
[Statutory Authority: RCW
19.27.031,
19.27.074, and
19.27.540. WSR 23-02-073, 23-12-103, and 23-20-023, § 51-50-480604, filed 1/4/23, 6/7/23, and 9/25/23, effective 3/15/24.]