In pleading the performance of conditions precedent in a contract, it shall not be necessary to state the facts showing such performance, but it may be stated generally that the party duly performed all the conditions on his or her part; and if such allegation be controverted, the party pleading shall be bound to establish, on the trial, the facts showing such performance.
RCW 4.36.080
Rules of court: Cf. CR 9(c).