I mind my business but somehow my radar is off.So in the spirit of full disclosure I think she just wants a new ceiling.

I would implement both a Non-Disclosure Agreement (NDA) and a Non-Circumvention Agreement.

(Full disclosure: I am a licensed agent.)

@John Thedford, with full disclosure the sellers property, there should be no issue as long as licensed. 

The title attorney can get all the disclosures typed up.

In the two states where I was licensed (MA and ME), this would absolutely require disclosure. 

There are a lot more disclosures, your title company can advise on that. 

You can bid at the foreclosure auction the same as anybody else - you bid in the amount of your tax lien, any amount you bid above is handled on the same terms as everyone else's bid, i.e. cash.The public auction is the system of protection along with the right to pay off superior liens and sometimes the right of redemption that protects the mortgage lender.Cases of people obtaining high priced properties for tax lien value are rare, usually the result of foreclosures in small jurisdictions run dishonestly and without proper public disclosure.

If you're using a simple contract that does not prohibit assignments, you can assign it with any additional disclosures.

Full disclosure I am a property manager.