An appeal shall stay all proceedings and furtherance of the action appealed from unless the Department of Planning and Development shall certify to the Board of Adjustment after the notice and appeal shall have been filed that by reason of facts as stated in the certificate, a stay would cause imminent peril to life or property. In such case, notice shall be given to the appellant and proceedings shall not be stayed otherwise than by a restraining order, which may be granted by the Board of Adjustment or by a Court of record, on application and notice to the Department of Planning and Development and for good cause shown. [Code § 12.36-7.]