No building or structure shall hereafter be constructed, used or occupied, and no part of any building or structure shall hereafter be moved or altered, and no lot shall hereafter be used or occupied except in conformity with the schedule of regulations herein set forth for the district in which the same is located. Unless the construction, use, occupancy, moving or alteration of a building or structure, or the use or occupancy of a lot, is specifically permitted under the provisions of this chapter, such use, occupancy, moving or alteration is prohibited by this chapter.