Plat

In the United States, a plat (/plæt/^[1] or /plɑːt/)^[2] (plan) is a map that shows the parts of a piece of land for where houses and buildings will be built.

A plat map that shows the location of a lot for sale

After filing a plat, legal descriptions can start using block and lot-numbers instead of calling them portions of sections.^[3]