On the auction sites they will typically list the property on their website until the auction date. Near or on the auction the day they will mark it as Active Off Market. Meaning they are in the process of determining the winning bid. You should see a notification in a day or two indicating Sold and someone will get a notification. If the home was on Auction.com you should be able to see if your bid was the top one or not. Other auction sites are not as open. Please note that you can use a Realtor at these sites to help look out for your best interests. If you did not get this one. Use your Realtor to help you get the next one. Remember you don't pay the Realtor the seller/auction site does.