Acceptance by the applicant of all conditions, if any, attached to approval by the Board of Supervisors or the expiration of the thirty-day appeal period, whichever occurs first, shall serve as an authorization for the Zoning Officer to issue a building or occupancy permit, which shall state any conditions attached to approval. Failure of the applicant to apply for a building permit, or occupancy permit if no building permit is required, within one year from the date of the Board's decision, shall render the approval void.