General. No building shall hereafter be erected and no existing building shall be moved, structurally altered, rebuilt, added to or enlarged, nor shall any land be used for any purpose other than those included among the uses listed as permitted uses in each zone by this chapter and meeting the requirements set forth in § 450-7, Schedule of District Regulations, nor shall any open space contiguous to any building be encroached upon or reduced in any manner, except in conformity to the yard, lot area, building location, percentage of lot coverage, off-street parking space, and all other regulations designated in the schedule and this chapter for the zone district in which such building or space is located. In the event of any such unlawful encroachment or reduction, such building or use shall be deemed to be in violation of this chapter, and the building permit and all other permits, including the certificate of occupancy shall become null and void.
(1)
Uniformity. Within each district, the regulations set by this chapter shall be minimum regulations and shall apply uniformly to each class or kind of structure or land.
(2)
Existing lots. A lot failing to meet the district requirements for area or width and which is demonstrated to have been of public record and not contiguous to other land in the same ownership at the time of enactment of this chapter may be used for a permitted use in the district in which it is located only upon the issuance of a variance by the Planning and Zoning Board after public hearing and a showing by the applicant that he cannot reasonably obtain additional space to meet ordinance requirements. Any variance granted under this section shall constitute the minimum adjustment necessary to permit a reasonable use of the lot.
(3)
Contiguous lots. If two or more lots or combinations of lots or portions of lots with contiguous frontage in single ownership are of record at the time of passage or amendment of this chapter, and if all or part of the lots do not meet the requirements for lot width and area as established by this chapter, the lands involved shall be considered to be an undivided parcel for the purpose of this chapter and no portion of the parcel shall be used or sold which does not meet lot width and area requirements established by this chapter, nor shall any division of the parcel be made which leaves any remaining lot with width or area below the requirement stated in this chapter.
(4)
Corner lots. Building setback lines for a corner lot shall be the same as required on the adjoining lot along either block.
(5)
Lot coverage. The building area of all roofed structures and buildings shall be included in the determination.
(6)
Height exceptions. All buildings and structures shall be subject to height limitations specified in the Schedule of District Regulations[1] except: chimneys, spires, towers, elevator penthouses, tanks, antennas, and flagpoles. The height of any structure above the base on which it is fixed or attached shall not be greater than the shortest distance from such base to any property lines. The foregoing does not pertain to transmission towers and associated right-of-way widths which are to be determined by standards in the National Electric Safety Code. Agricultural buildings not intended for human occupancy shall not be subject to the building height limitations.