Md. Code, Local Government § 10–325

(a) (1) A county may enact laws for historic and landmark zoning and

preservation:

(i) generally;

(ii) in accordance with Title 8 of the Land Use Article; or

(iii) to be administered generally by a Historic District

Commission.

(2) A law enacted under paragraph (1) of this subsection may provide

for appeals or judicial review.

(b) The authority conferred under this section is in addition to any charter

provision or local law that provides for planning and zoning.