Maryland Transportation Section 5-821
§ 5-821.
  (a)   Unless a person has an appropriate permit issued by the Administration, the person may not, in a noise zone established under this part:
    (1)   Establish or construct any new structure;
    (2)   Make any new use of any existing structure or land; or
    (3)   Substantially alter any existing structure or use of land.
  (b)   Notwithstanding subsection (a) of this section, the Administration may not require any person to obtain a permit to construct an addition to a residential structure in a noise zone established under this part, if:
    (1)   The resultant improved structure retains the same number of family dwelling units; and
    (2)   The addition is not made eligible for participation in any State funded noise assistance program established under Subtitle 12 of this title.
  (c)   The Administration may not grant a permit if the proposed action would:
    (1)   Enlarge the size of or create an impacted land use area; or
    (2)   Violate local land use and zoning laws.
  (d)   Unless a person has an appropriate permit issued by the Administration or a variance granted by the Board of Airport Zoning Appeals, a political subdivision may not approve a final subdivision plan or issue any permit that is prerequisite to the construction of improvements in a noise zone established under this subtitle.