Any one of the following activities:
(1) The improvement of one lot or two or more contiguous lots, tracts or parcels of land for any purpose involving:
(a) A group of two or more residential or nonresidential buildings, whether proposed initially or cumulatively, or a single nonresidential building on a lot or lots regardless of the number of occupants or tenure.
(b) The division or allocation of land or space, whether initially or cumulatively, between or among two or more existing or prospective occupants by means of, or for the purpose of, streets, common areas, leaseholds, condominiums building groups or other features.
(2) The subdivision of land.
(3) The following shall not be considered a land development:
(a) The conversion of an existing single-family detached or single-family semidetached dwelling into not more than three residential units, unless such units are intended to be a condominium.
(b) The addition of an accessory building, including farm buildings, on a lot or lots subordinate to an existing principal building.
(c) The addition or conversion of buildings or rides within the confines of an enterprise which would be considered an amusement park. For purposes of this exemption, an amusement park is defined as a tract or area used principally as a location for permanent amusement structures or rides. This exclusion shall not apply to newly acquired acreage by an amusement park until the initial plans for the expanded area have been approved by the Township.