(1) The governing authority or an administrative official or commission authorized by the governing authority must approve or deny an application filed under this chapter within ninety days after receipt of the application.

(2) If the application is approved, the city or county must issue the owner of the property a conditional certificate of acceptance of tax exemption. The certificate must contain a statement by a duly authorized administrative official of the governing authority that the property has complied with the required findings indicated in RCW 84.14.060.

(3) If the application is denied by the authorized administrative official or commission authorized by the governing authority, the deciding administrative official or commission must state in writing the reasons for denial and send the notice to the applicant at the applicant's last known address within ten days of the denial.

(4) Upon denial by a duly authorized administrative official or commission, an applicant may appeal the denial to the governing authority within thirty days after receipt of the denial. The appeal before the governing authority must be based upon the record made before the administrative official with the burden of proof on the applicant to show that there was no substantial evidence to support the administrative official's decision. The decision of the governing body in denying or approving the application is final.