[freebeard]

Washington's wiretapping law is a "two-party consent" law. Washington makes it a crime to intercept or record a private telephone call, in-person conversation, or electronic communication unless all parties to the communication consent. See Wash. Rev. Code § 9.73.030(1). Whether a conversation or other communications is "private" depends on a number of case-specific factors, such as the subjective intention of the parties, the reasonableness of their expectation that the conversation would be private, the location of the conversation, and whether third parties were present. State v. Townsend, 57 P.3d 255, 259 (Wash. 2002). You should always get the consent of all parties before recording any conversation that common sense tells you is private.

http://www.dmlp.org/legal-guide/washington/washington-recording-law