7.6.3.   EXCEPTIONS
   The provisions of this section do not apply to the following.
   A.   Single-   or duplexes on separate , except commonly owned areas in Section 8.7.3, Flexible Lot Developments (FLD); or,
   B.   Approved and plans developed in the prior to February 17, 1991 if:
      1.   The is developed in accordance with the approved or plan; and,
      2.    complies with the standards of Section 7.6.4.A, Use of .