Simply, land subdivision involves dividing a larger piece of land into smaller areas. Some people may wish to subdivide a portion of their land and continue living in an existing dwelling (building subdivision) or some may want to break a vacant plot of land into smaller parcels for sale. The main purpose of building subdivision is to sell the new parcels of land to make a profit. While it may seem simple, there is a lot of detail and planning involved in creating a land subdivision plan, including permit submissions and lots of liaising with councils and third parties.
Land can be subdivided for residential, commercial or industrial purposes, depending on what the councils restrictions are for the land in any particular area.