The Board or hearing officer, as the case may be, shall render a written decision or, when no decision is called for, make written findings on the application within 45 days after the last hearing before the Board or hearing officer. Where the application is contested or denied, each decision shall be accompanied by findings of fact and conclusions based thereon, together with the reasons therefor. Conclusions based on any provisions of the Pennsylvania Municipalities Planning Code, this chapter or other rules or regulations shall contain a reference to the provisions relied on and the reasons why the conclusions are deemed appropriate in the light of the facts found. Where the Board fails to render the decisions within the period required or fails to hold the required hearing within 60 days from the date of the applicant's request for a hearing, the decision shall be deemed to have been rendered in favor of the applicant unless the applicant has agreed, in writing or on the record, to an extension of time. When a decision has been rendered in favor of the applicant because of the failure of the Board to meet or render a decision as hereinafter provided, the Board shall give public notice of said decision within 10 days from the last day it could have met to render a decision in the same manner as provided in Subsection L below. If the Board shall fail to provide such notice, the appellant may do so. Nothing in this section shall prejudice the right of any party opposing the application to appeal the decision to a court of competent jurisdiction.