Md. Code, State Finance and Procurement § 5A–405

If a recipient of a grant under this subtitle or subsequent owner of a property that was assisted by a grant under this subtitle takes any action within 10 years of the grant award with respect to the assisted building or structure, such as dismantlement, removal, or substantial alteration, which causes it to no longer be eligible for listing on the National Register of Historic Places, within 1 year from the date of loss of eligibility, the preservation grant shall be repaid in full to the Fund.