Depends on regulations, you might get by with a metal building and gravel lots.Really, without more information about the location, town, highway access and terrain, we are shooting in the dark

Would I get a tax write off for the $50,000 outstanding?

I look, instead, at evictions, late payments with past landlords, if they have any utility bills outstanding, etc, rather than trying for a fixed $$ amount of income. 

It will also have tons of photos, descriptions of how my owner financing and lease to own programs work, plus turn by turn directions to each house from several different major highways.

If so, then you can attempt to get that landlord to fill out a form called "Authorization to Release Information" that authorizes you to speak with BoA regarding the outstanding loan.You can even try to do what is called a "Subject To" transaction with the landlord, where you take over the payments on the loan.It sounds like that's what you are wanting to do ...I think where the legal eagles are having trouble is this: are you a tenant at foreclosure - or are you a new owner after foreclosure - since you are both ...

I have a house that is now zoned highway commercial on a main route with enough property for gas station, fast food etc..

With theARV and repair costs, you will have an idea of how much you can offer for the property and see if that will cover the outstanding balance and back taxes.

You should be strategic in building your network to meet your goals/needs. 3 - Yes, but we limit the number of requests you can have outstanding at one time.4 - Yes.

The house is in Northwest Charlotte... up Highway 16 (Brookshire Blvd).  

Dollar for dollar, you'll get more bang for your buck contacting people directly rather than waiting for them to find you along the single most busy highway in the world.