Land originally granted by the government was commonly done by documents called land patents. Lots of land can be sold/bought by the owners or conveyed in other ways. Such conveyances are made by documents called deeds which should be recorded by the government, typically the county recorder's office. Deeds specify the lot by including a description such as one determined by the "metes and bounds" or quadrant methods, or referring to a lot number and block number in a recorded plat diagram. Deeds often mention that appurtenances to the lot are included in order to convey any structures and other improvements also.