It’s a reasonable question. If money may belong to you, you might expect someone from the county, court, or other agency holding the funds to contact you.
The type of notice required, who must be notified, and how that notification must be made varies by state and by the type of foreclosure.
A notice may have been mailed to an address associated with the property or another address found in the records. If you moved, the notice was returned, or the records contained outdated information, it may never have reached you.
The situation can become even more complicated when the former property owner has passed away. The person who may now have an interest in the funds could be an heir who never owned or lived at the property and may have had no reason to know that surplus funds existed.
In some cases, the required notice may be sent without ever reaching the person who may ultimately be entitled to the funds.
Not receiving a notice does not necessarily mean the funds aren't there or that you don't have a potential claim.