Maryland Land Use Section 6.03

      (a)      A public sewer or other municipal street utility or improvement may not be constructed in a street or highway until the street or highway is placed on the official map.

      (b)      A permit for development may not be issued unless a street or highway giving access to the proposed development has been placed on the official map.

      (c)      (1)      An applicant for a permit may appeal from a decision of the administrative officer having charge of the issue of permits to a board of appeals if:

                  (i)      The enforcement of this section would entail exceptional difficulty or unwarranted hardship; and

                  (ii)      The circumstances do not require the development to be related to existing or proposed streets or highways.

            (2)      A board of appeals may, in passing on an appeal under this subsection, make any reasonable exception and issue the permit subject to conditions that will protect any future street or highway layout.

            (3)      A decision rendered under this subsection shall be subject to review in the same manner and subject to the same provisions of law as an appeal from a decision of a board of appeals on zoning regulations.