It  may be invalid due to age, it may have been paid and never released, or may be gone by operation of law via the tax sale.

@Mike Bowling Check the local laws in your state but you shouldn't need a realtor to rent out your house.  

I am not an attorney nor do I know TX law.

READ CA LAW!

I guess that would be our first lesson in contract law.  

MD may have a similar law in place.

This property is occupied and I wanted to know that they mentioned "Property may be subject to leasehold interests or other rights or claims of various tenants or other occupants, and Buyer may be subject to the United States Service Members Civil Relief Act, or other federal, state or local law, as applicable" in auction disclaimers.Is this right property to buy? 

June 6th 5:30 to7  at Virtus Law 

That is just a life law! 

So ask yourself if you want to rent to someone you know is breaking the law.-- The income they do report (which is probably very little) could put them into a protected class, making things like evictions harder (always check state and local laws when it comes to that).With all that being said, the risk is on you.