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 Municipalities Planning Code or of any ordinance, rule or regulation shall contain a reference to the provision relied on and the reasons why the conclusion is deemed appropriate in the light of the facts found. If the hearing is conducted by a hearing officer, and there has been no stipulation that his decision or findings are final, the Board shall make his report and recommendations available to the parties within 45 days, and the parties shall be entitled to make written representations thereon to the Board prior to final decision or entry of findings, and the Board's decision shall be entered no later than 30 days after the report of the hearing officer. Except for challenges filed under this chapter or otherwise, where the Board has power to render a decision and the Board or the hearing officer, as the case may be, fails to render the same, or fails to commence, conduct or complete the required hearing as herein provided, the decision shall be deemed to have been rendered in favor of the applicant, unless the applicant has agreed in writing 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 herein above provided, the Board shall give public notice of said decision within 10 days from the last day the Board could have met to render a decision, as provided by this article. If the Board shall fail to provide such notice, the applicant may do so. Nothing in this subsection shall prejudice the right of any party opposing the application to appeal the decision to a court of competent jurisdiction.