Your home’s assessor’s parcel number is like a unique ID number for your home. Learn how to track down this critical information about your property. 

The assessor’s parcel number (APN) is an essential component of a real estate sale in relation to state records. A property’s APN gets recorded on county parcel maps to demarcate property lines, assess taxes, determine the exact property location, and for deed information. If you need to find you home’s APN, here are the five things to know when you track it down.

1. Know what a property APN looks like.

The first step to finding the property APN is to know what the property APN looks like. Also known as an assessor’s identification number (AIN) and property identification number (PIN), parcel numbers contain at least three sets of numbers. The first set of numbers corresponds to the map booking number; the second number is the book’s page number, and the third set is the actual parcel number. You’ll typically see them separated by a dash.
For lots that are not unattached single family units, there’s a fourth set of numbers. Condos, duplexes, and apartments have its own set of numbers to separate it from other units in the structure.

2. Check your property tax bill.


Once you know what the property APN looks like, check your property tax bill first. The APN is most likely near your basic ID information at the top of the first page. If you can’t find it there for some reason, check the pay stub that you tear off and return with your tax payment. The number will be denoted on the bill as the assessor’s parcel number, the parcel number, or the APN.

3. Review your deed of trust.

Your deed of trust is usually required to note the property APN along with other paperwork you receive at your home closing. Title reports and the home appraisal typically need to list the property APN as well.
It’s listed the same way it appears on your property tax bill—as the parcel number, the APN, or the assessor’s parcel number. Keep all of these documents together after you purchase your home because some templates for all three of these documents don’t include the property APN.

4. Search your county assessor’s website.

If you can’t find the property APN on any of the documents above, your next step is the county assessor’s website. Depending on the county, the website should have a direct online search tool. Note that parcel numbers are not always called parcel numbers on these websites; they can be found under “property tax information,” “real estate property search,” or “parcel maps.” These websites also let you search for other information about your property in a single convenient place.
5 ways to find your home's assessor’s parcel number
On most county assessor’s websites, you can find your property APN via basic identifying information such as your name, address, and tax ID number. If your county doesn’t have a website, go directly to the county assessor’s office or your property tax department office. These offices will have the parcel information on a physical map. Be aware that you may have to make an appointment and pay a nominal fee for access to this information, so call ahead.

5. Speak with your real estate agent.

If you still can’t track down your property APN, reach out to your real estate agent. Real estate professionals pay dues to have access to centralized property records that the average person does not. Real estate pros also can access information much more quickly than anyone else. If you have a Realtor you already trust, go ahead and contact them.

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