Limited commercial uses, as approved by the Town Council, shall be permitted in developments containing 100 or more dwelling units. Such commercial uses shall be permitted at the ratio of 2,400 square feet of floor area for every 100 dwelling units. The commercial area shall be approved by the Town Council and may be located in separate buildings or incorporated within a multifamily structure, provided that no residential uses be located below the commercial use. A multifamily building commercial use sign shall be limited to an identification for each point of access. The signs shall not exceed two square feet in area, shall not be directly lighted and shall be attached flat against the face of the buildings or other architectural structure.