Plat

In the United States, a plat (/plæt/[1] or /plɑːt/)[2] (plan) is a cadastral map, drawn to scale, showing the divisions of a piece of land.

City, town or village plats show subdivisions broken into blocks with streets and alleys.

[3] In order for plats to become legally valid, a local governing body, such as a public works department, urban planning commission, zoning board, or another organ of the state must normally review and approve them.

The creation of a plat map marks an important step in the process of incorporating a town or city according to United States law.

Parcel maps, unlike any other public real estate record, have no federal, state or municipal oversight with their development.

A plat map that shows the location of a lot for sale
A pamphlet for a walking tour of Boise's original ten blocks
An 1878 plat map of Transitville (now Buck Creek, Indiana )