There are tax loan services like http://www.genesistax.com and you can search texas property tax loans in google to likley find many other companies.
Do you want to remain in the house or sell it?
shoot me an email or give me a call if you want to keep your home OFF the tax sale. I'm an Austin-based real estate broker and investor who works with owners throughout Texas who fall behind on taxes or payments. I can be reached at: info@FastCash4AustinHomes.com or 512-507-5864. I'm not looking to purchase your home but depending on your objective, I can probably offer some options.
Guy E. Gimenez ABR, CRS, GRI
Broker / Owner / Investor
The PowerHouse Group
CMG Group, LLC
I have bought abandoned homes in tax foreclosure before (including in waco) in the past but never one in which was still occupied. Feel free to shoot me an email with any questions you might have I would be more than happy to help if I can. Remember, once the auction takes place you still have that redemption period so make sure to pay up by then (it should be at least 6 months at the minimum).