Contemporary notions of subdivisions rely on the Lot and Block survey system, which became widely used in the 19th century as a means of addressing the expansion of cities into surrounding farmland.
While this method of property identification was useful for purposes of conveyancing, it did not address the overall impacts of expansion and the need for a comprehensive approach to planning communities.
[3]: 6 Attached to this definition was the following footnote: for the purpose of sale or of building development: Every division of a piece of land into two or more lots, parcels or parts is, of course, a subdivision.
The object of inserting a definition in the text of the act is to avoid the inclusion, within the planning commission's control, of such cases as a testator's dividing his property amongst his children, partners' dividing firm property amongst themselves on dissolution, or cases of that nature.A subdivision does not need to be sold, in whole or in part, for its resulting pieces to be considered separate parcels of land.
In some jurisdictions, a testamentary division of property does not constitute a legal subdivision for purposes of separate conveyancing of the "subdivided" parcels.
[4] Furthermore, the SCPEA's definition leaves ambiguous the notion of 'building development' and whether the identification of multiple construction sites on a single parcel of land constitutes a subdivision subject to the review and approval authority of the planning commission.
They have existed for well over a century, but became prevalent after World War II, as a more affluent population demanded larger and more widely spaced houses coupled with the increase of car usage for which terraced streets were unsuitable.