As used in this part, the term "subdivision" means all divisions of a tract or parcel of land into two or more lots, buildings, sites, or other divisions for the purpose, whether immediate or future, of sale, legacy, or building development; includes all division of land involving a new public road or a change in existing public roads; includes resubdivision; and, where appropriate to the context, relates to the process of subdividing or to the land or area subdivided; provided, however, that the following are not included within this definition:

(1) The combination or recombination of portions of previously platted lots where the total number of lots is not increased and the resultant lots are equal to the standards of the municipality;

(2) The division of land into parcels of five acres or more where no new street is involved.