Use must conform. No building or structure shall hereafter be erected and no existing building or structure shall be moved, altered, added to or enlarged, nor shall any land or building be occupied by any use except for the use listed herein as permitted in the zone in which such land and building is located. In no case shall there be more than one principal use or one main building and its accessory building on one lot, except in the I-1 Industrial Zone a lot is permitted to be developed with one principal use and/or one main building and its accessory building and not more than one off-premises sign, which may be of V-type construction. Furthermore, in the I-1 Industrial Zone an individual building may be designed as to permit the use of said building by more than one industry, provided that an application for such multiple use is approved by the Planning Board upon proper application and compliance with all other standards established by § 59-54 and good planning principles and standards as used in reviewing site plan applications under Article VI of this chapter generally. In addition, in the I-P Industrial Park Zone there may be permitted a multiple tenancy of each building only as more specifically set forth in § 59-55G of this chapter.

Lots in two zones. Where a zone boundary line laterally divides a lot, the regulations for the less restricted portion of such lot shall be applicable to the next 30 feet of the adjoining area, provided that the lot fronts on a street located in the less restricted zone.