"Subdivision" means:
(a) The division of any parcel of land shown as a unit or as contiguous units on the last preceding tax roll into two or more parcels, sites or lots, any one of which is less than five acres, for the purpose, whether immediate or future, of transfer of ownership;
(b) The improvement of one or more parcels of land for residential, commercial or industrial structures or groups of structures involving the division or allocation of land as open spaces for common use by the owner, occupants or lease holders or as easements for the extension or maintenance of public sewers, water lines, storm drainage or other public facilities.
(Ord. 5921/62. Passed 5-14-62.)