Then I simply google search Tax Deed Sales in ——— county.

Come to find out, the seller actually chose me over a slightly better offer, simply because I was buying the home as an investment property.

I am assuming an immediate rent increase from 700 to 900 would cause the tenants to simply not pay it. 

Simply, it was an amazing investment that taught me a lot about the investment game from the ground up!

You either struck gold or it's a scam.

@Peter J Struck no.

Yes, very simply, sell tax free and buy another similar house in the area. 

My in-laws have done well in the Seattle area by simply renting out their homes when they buy a new home to live in.  

I would simply tell the tenant that you are not willing to falsify a document. 

As a side question, have you considered structuring the deal so that you own the land outright immediately and simply make support parents to your mom for 30 years (or death); whichever comes first?