The Administrative Procedures Act, RCW 34.05, governs appeals of state administrative agencies. Sections 510 through 598 discuss Judicial Review and Civil Enforcement. These sections of the state code cover where the Petition for Review is filed, the time for filing, the contents of the petition, and other procedural information.
However, the Administrative Procedures Act does not cover appeals from a local government or municipal corporation. (See Washington Administrative Law Practice Manual §14.01.)
Note: Decisions or orders from local governmental agencies or municipal corporations can be appealed to the Superior Court. The Administrative Procedure Act does not apply to these entities. If your decision is from one of these non-APA agencies, please proceed to the next section “What if My Appeal is Not Governed by the APA?”