Buildings, structures, and land shall be used, and buildings and structures shall be erected, structurally altered, or enlarged in the H-C Districts, for all principal uses provided for in the respective District with which the H-C District is combined, plus such other uses as the Planning Commission may deem to be similar and not detrimental to the public health, safety, and welfare, or intent of this District. All uses shall be subject to the property development standards in § 36-17.7.