No person shall locate, erect, construct, reconstruct, enlarge or structurally alter any building or structure except in conformity with the regulations of the district in which such building or structure is located as such districts are set forth in the Zoning Map, except as otherwise provided in this chapter.

No structure shall be erected and no existing structure shall be reconstructed, moved, altered, added to or enlarged, nor shall any land or structure be designed, used or intended to be used for any purpose or in any manner other than as specified among the uses hereinafter listed as permitted in the district in which such structure or land is located.

No structure shall be erected, no existing structures shall be altered, enlarged or rebuilt, nor shall any open space surrounding any structure be encroached upon or reduced in any manner, except in conformity with the area, bulk, yard and other regulations hereinafter designated for the district in which such structure or open space is located.

No yard or other open space provided about any building for the purpose of complying with the provisions of this chapter shall be considered as providing a yard or open space for any other building.

No minimum off-street parking area or loading or unloading area shall be considered as providing off-street parking, loading or unloading for a use or structure on any other lot or parcel than the principal use to which it is ancillary.

The area of dimension of any lot, yard or other space shall not be reduced to less than the minimum required by this chapter and, if already existing at less than the minimum required by this chapter, the area or dimension may be continued and shall not be further reduced.

The sale or display of goods outside the confines of a building or structure is prohibited except for the following:

Model homes or sales offices within a subdivision which are used only during the period necessary for the sale of new homes within such subdivision shall not be considered a business use.