Colli Real Estate

—Is this true in the county/state of Bexar/Texas?
—What is the catch? (IE If the house loan wasn’t ever paid, do you have to then take the loan over and pay for the house, or it is just the taxes and then whatever money you need to maintain the home/insure it/etc???)

—If this is for real and allowed in Texas, where would I go to find out what properties haven’t paid their taxes? What else do I need to consider when/if I were to do this?

Please send me links to help!!