County tax auctions are one of the most misunderstood acquisition channels in real estate. Investors hear “tax sale” and imagine buying properties for pennies on the dollar with zero competition. That’s not what they are. But used correctly, with proper preparation, they are one of the most reliable sources of below-market acquisitions I’ve found in the Texas market.

Here’s how the system works and how to approach it without getting burned.

Why Tax Sales Happen

When a property owner stops paying property taxes, the county places a lien on the property. After a statutory period — in Texas, typically several years — if the taxes remain unpaid, the county can proceed to a tax foreclosure and sell the property at auction to recover the owed taxes.

The opening bid at a tax sale is typically the amount of back taxes, penalties, and fees owed. In some cases, this is well below market value. In others, competitive bidding drives the price up to or beyond market value.

What Research Looks Like

The county publishes the auction list in advance — typically 21 days ahead of the sale. Your job in those 21 days is to research every property on that list that interests you:

Pull the title: tax sales in Texas do not eliminate all liens. Federal liens (IRS, for example) survive the sale. You need to know what you’re buying. A title search is essential, not optional.

Drive the property: you typically cannot enter the property before the auction, but you can drive by, assess the exterior condition, and get a rough sense of what rehabilitation will cost.

Pull the comps: know what the property is worth in good condition, what it will cost to get there, and what you’re willing to pay at auction to make the deal work. Set your ceiling before you walk in the room.

The Bid Discipline

Auctions create competitive pressure that makes it easy to pay more than you planned. The discipline required is simple but hard to execute: know your number before the auction, do not exceed it. If someone else wants to pay more than the deal is worth, let them.

In any given auction, you’ll bid on ten properties and win two. That’s normal. The goal is not to win every bid — it’s to win the right ones.

After the Auction

The redemption period: in Texas, the former owner has a right of redemption after the tax sale — typically six months, extended to two years for homesteaded properties. During this period, the owner can reclaim the property by paying the back taxes plus a redemption premium. You need to factor this into your plans. Don’t start major renovation until the redemption window closes or you’re comfortable with the redemption risk.

Title insurance after a tax sale can be more complex to obtain than after a conventional purchase. Work with a title company that has experience with tax sale transactions specifically.

The counties I actively track: Travis, Bexar, Hays, Williamson. Each has a different auction calendar and a different volume of properties. Learn the rhythm of the county you’re targeting.

Tax auctions are not a shortcut. They reward preparation and punish shortcuts. But for the investor willing to do the research, they are a consistent source of deals that simply don’t exist in the retail market.