All subdivision and land development within the Borough of Bellefonte must be approved in accordance with the requirements and procedures specified within this chapter. Land development, as defined by the Municipalities Planning Code, shall include 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; or
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.
The following activities shall not constitute "land development" as specified by the Municipalities Planning Code and, therefore, shall be excluded from the provisions of this chapter:
A. 
The conversion of an existing single-family dwelling or duplex into not more than two 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; or
C. 
The addition or conversion of buildings or rides within the confines of an existing enterprise which would be considered an amusement park. This exclusion shall not apply to newly acquired acreage by an amusement park until initial plats for the expanded area have been approved by proper authorities.