Keep your Custer tax notice mailing address current

A move, a closing, or an estate transfer is exactly when a property tax notice starts chasing the wrong address. The notice keeps going to the last mailing address on file until someone tells the county otherwise.

Two offices can fix this. The assessor processes address-change requests so tax notices reach the correct mailing address, and the treasurer keeps a property tax address-change form with fields for the old and new address. Either path updates where the bill lands.

The reason to bother is plain: the tax is owed whether or not the notice finds you. A bill sitting in a stale mailbox, or arriving in a prior owner’s name, does not pause the deadline or forgive the interest that builds after it. Out in the Wet Mountain Valley, where a new owner may be hundreds of miles away when a notice goes out, that gap is easy to miss.

When you buy or inherit property in Custer County, pull up the owner address in the assessor record and correct it if it is stale. Submit the change, then tuck a copy into your closing or estate file so you can prove the date it was made. It is dull paperwork, and that is the kind that keeps a missed notice from turning into a late-payment surprise.