APN stands for Assessor's Parcel Number. It is a unique identifier assigned to each parcel of real estate by the county assessor's office for property tax and assessment purposes. When a house is sold, the APN helps track and identify the specific property involved in the transaction.

Assessor Parcel Numbers (APN) are 8 digits long. The standard formatting for the numbers is 000-000-00. The book number is the first three digits. The page number is the next two digits. Your APN can be found on your value notice or tax bill.

Assessors Parcel Number = APN the first set of numbers is the book #

Assessors Maps are recorded in Assessors office where the Real property is located, it shows the boundaries of the property and also gives you Book, Page and Parcel No. information (which is also called as Assessors Parcel Number{APN}) .

Try doing a search for (your county) GIS and see if the county you are in has a gis website. They usually have a search function where you can search by APN. Also, sometimes the county tax assessor will have a search function on their website to search by APN. Lastly, you can call the local tax assessor and give them the apn, some places will charge, some wont, its hit or miss. One other resource is to go to FindPropertyOwner.com, they can find the owner from just about any information you have on the parcel.

Good Luck!