Yes, if the Power of Attorney is used in a real estate transaction. In that case, it must be filed in the County Clerk's office. In addition, when you file in the County Clerk's office, the Power of Attorney is a public record open to inspection by the public. A writing that revokes a filed Power of Attorney should also be filed in the County Clerk's office.

If you file a Power of Attorney in the County Clerk's office, you will be able to get additional "certified" copies from the County Clerk for a small fee. A certified copy is legally equivalent to the original document. It is often convenient to have certified copies of your Power of Attorney on hand.