When Fort Worth has tax-foreclosed properties for sale, they publicise it with a "sealed bid" sale on their website. Buyers will be required to pay post-judgment taxes due to Tarrant County in addition to the amount of the bid. You submit your offer and all offers are opened at the same time. Here's the website to learn more, see what properties are in the next auction, and how to bid: http://fortworthtexas.gov/propertymanagement/realproperty/