Best way to do due diligence on auction property?

[Henley H.]

I have my eye on a few properties scheduled to be auctioned on the courthouse steps.  These properties have not yet reverted back to back ownership.  What is the best way to do due diligence prior to the auction? Is it best to approach a title company about doing a search and making sure the property would be eligible for title insurance?  What would be the associated costs for such a service?