RCW 48.12.200: Valuation of purchase money mortgages.

(1) Purchase money mortgages shall be valued in an amount not exceeding the acquisition cost of the real property covered thereby or ninety percent of the fair value of such real property, whichever is less.

(2) The commissioner has full discretion in determining the method of calculating values according to the rules set forth in this section, and consistent with such methods as then adopted by the National Association of Insurance Commissioners.