If a historic resource has been classified as a Historic Site or is within a Historic District, as shown on the master plan, or if the Historic Preservation Commission has determined that it should be so classified, and the Commission finds that demolition of the resource by neglect should be prevented, the Commission shall instruct the Director to notify, in writing, the owner(s) of record of the property, any person having any right, title, or interest therein, and the occupant or other person responsible for the maintenance of the property, of the deterioration. The notice shall specify the minimum items of repair or maintenance necessary to correct or prevent further deterioration. Such notice shall be sent by certified mail, return receipt requested, addressed to said owner or other responsible person at the last known address, or the address shown on the real property tax records in the Land Records of Prince George's County, Maryland. Such notice, when so addressed and deposited with the Postal Service with proper postage prepaid, shall be deemed complete and sufficient. In the event that such notice is returned by the postal authorities, the Director shall cause a copy of the notice to be personally served by authorized representative upon the owner(s) of record of the property, any person having any right, title, or interest therein, and the occupant or other person responsible for the maintenance of the property, or upon any agent of the owner(s) thereof. In the event that personal service cannot be accomplished, as aforesaid, after reasonable efforts, notice shall be accomplished by posting a public notice on the property. The notice shall provide that corrective action shall commence within thirty (30) days or less of the receipt or posting of said notice, unless an extension is granted by the Commission, and shall be completed within a reasonable period of time. The notice shall state that the owner(s) of record of the subject property, or any person having any right, title, or interest therein, may, within ten (10) days, request a hearing on the necessity of preventing demolition by neglect. If no request for hearing is received within this time period, the notice shall become final.