WA SB5554

Cities and code cities must prohibit historic landmark designations for properties zoned residential or mixed use that are less than 40 years old

Written consent from property owners is required before any historic landmark designation that would restrict use, alteration, or demolition; designations made without consent are void

These restrictions do not apply to properties already within established historic districts created through local preservation ordinances

Cities have one year from the effective date to adopt these requirements into their development regulations; after that deadline, state requirements automatically supersede conflicting local regulations

Actions taken by cities to implement these historic landmark requirements are exempt from administrative or judicial appeals under the State Environmental Policy Act (SEPA)