MDAH; exempt certain repairs to state property.

HB 157 allows Mississippi's Department of Archives and History (MDAH) to approve exemptions from standard repair rules for state-owned properties over 20 years old with historical, cultural, or architectural significance. It requires repairs to replicate original materials and maintain a property's historic appearance, while permitting demolition only if economically beneficial. Properties designated as both Mississippi Landmarks and National Historic Landmarks must follow additional federal and state preservation standards, including written approvals from MDAH and the National Park Service. The bill aims to balance preservation needs with practical repair flexibility for state-owned historic sites.