Concerning project permit applications for residential housing units.

This bill requires cities to review residential housing permit applications under the zoning rules in effect when a fully completed application is submitted, rather than current rules. It allows cities to pause processing until fees are paid or notices are posted, but does not make applications invalid for missing these items. The law applies to projects in urban growth areas and does not override other requirements like those in chapter 43.21C RCW. It standardizes the timing for permit reviews to reduce delays in housing development.