Maryland Land Use Section 8.10
§ 8.10.
  If a site or structure is considered to be valuable for its historic, archeological, or architectural significance, a historic district commission or historic preservation commission may approve proposed construction, reconstruction, alteration, moving, or demolition, despite the fact that the changes come within the provisions of § 8.09 of this subtitle, if:
    (1)   The site or structure is a deterrent to a major improvement program which will be of substantial benefit to the local jurisdiction; or
    (2)   The retention of the site or structure would:
      (i)   Cause undue financial hardship to the owner; or
      (ii)   Not be in the best interests of a majority of persons in the community.