Wash. Rev. Code § 61.10.030
(1) Except when a statute, regulation, rule, or written guideline promulgated by an institutional third party applicable to a residential mortgage transaction purchased in whole or in part by an institutional third party specifically prohibits cancellation during the term of indebtedness, the lender or servicer of a residential mortgage transaction may not charge or collect future payments from a borrower for mortgage insurance, and the borrower is not obligated to make such payments, if all of the following conditions are satisfied:
(c) The outstanding principal balance of the residential loan is not greater than eighty percent of the current fair market value of the property and is:
(3) This section does not apply to:
[ 1998 c 255 s 3.]