Washington Revised Code Title 63. Personal Property § 63.19.080. Renegotiation--Same lessor and consumer

(a) The addition or return of property in a multiple-item agreement or the substitution of the lease property, if in either case the average payment allocable to a payment period is not changed by more than twenty-five percent;

(b) A deferral or extension of one or more periodic payments, or portions of a periodic payment;

(c) A reduction in charges in the lease or agreement; and

(d) A lease or agreement involved in a court proceeding.