I recently purchased my first multi family property (2 townhouse duplexes). I closed on the property on July 2nd. Rent is due on the 1st and late by the 5th. Everyone paid on time except one. After multiple calls and ...

If it's baseboard electric heat and hot water, it's especially urgent to get this taken care of.Either way, I'd find a way to get a second meter installed pronto. it should be a pretty general implication that any advice given should not be followed unless you can confirm it is legal in your state.

Would it be legal and make sense to list the same unit at the same time for, say $1,800, on Zillow/CL/Zumper/etc. and for $2,100 on the MLS?

So is there any way legally I can clear the property or I should stay away from such property.  

They approved me for the loan and I was the proud owner of this, ahem, beauty!

AS @Kevin Romines  says talk with local attorney 30% Is legal in many states.. and I would not do it for less than that personally..

I've just been pre approved for my loan, and am  beginning to look for a property.

When I reached out to a lender the other day about pre-qualification and pre-approval, I told her how much money I had in my bank accounts and she said this wouldn't be enough money for the down payment on the price range of properties I was looking at.

Wasn't until formal property survey resulted in obvious problems with legal description that seller abruptly "cancel's" the sale stating their need to "fix the property description issues". 

So basically I'm trying to figure out right now who I am going to receive money from to recieve pre-approval, then I'm going to learn where to find a deal and wait or move on a deal.