Districts. For the purpose of this chapter, the area of the Township of Florence is hereby divided into zones or districts, hereinafter referred to as "districts," consisting of 13 classes designated as follows:

District boundaries. The boundaries of the districts are hereby established as shown on the map entitled "Zoning Map, Florence Township, Burlington County, New Jersey," prepared by Dante Guzzi Engineering Associates, dated July 1, 1999, and revised December 7, 2005.

On and after the effective date of this chapter, no person, unless authorized otherwise by law or by order of the Zoning Board of Adjustment, shall occupy or use any land or construct or locate any building within the bounds of said Township of Florence except in conformity with the restrictions and regulations established by this chapter for the district in which such land or building is located and in conformity with all other pertinent terms and provisions of this chapter.

Nothing in this chapter, however, shall be deemed to prevent normal maintenance and repair, structural alteration in, or the reconstruction of a noncomplying building, provided that such action does not increase or extend the degree of or create any new nonconformity with regard to the regulations pertaining to such buildings or the lot upon which they are constructed (e.g., an undersized house, situated closer to the street line than now specified may have an addition on the back, provided that side and rear yards are not invaded); except that the floor area of a single-family house that occupies a lot that is smaller than the minimum lot area for the district in which the house is located, may be increased by not more than 20% of the floor area existing as of the date of adoption of this chapter, provided that all other provisions of this chapter are complied with.

On and after the effective date of this chapter, no person, unless authorized by law or by order of the Zoning Board of Adjustment, whether acting as agent, architect, engineer, contractor or otherwise, shall aid or assist any person in the occupation of or use of any land or in the construction or location of any building within the bounds of said Township of Florence unless such building is in conformity with the restrictions and regulations established by this chapter for the district in which such land or building or use is located and in conformity with all other pertinent terms and provisions of this chapter, and the construction of which or a portion of which has been begun or for which a contract or contracts have been let pursuant to a permit issued prior to the passage of this chapter may be completed and used in accordance with the plans for which said permit was granted.

Where a zoning district line divides a lot, the district may be modified by the owner by moving the district line up to the property line, provided that the property line is within 20 feet of the district line as shown on the map. A use permitted in this district so extended shall thereafter be a permitted use in the extended area.

Where a street or public way serves as a zoning district line and it is lawfully vacated, the former center line shall be considered the zoning district line.