I think this will not last and they will have to lower their prices soon, because the market force that is driving this might be people running out of money to spend.

I have recently retired from the Air Force and have started into the world of business.  

iI LOVE CHICAGO because of the variable price points, endless number of multi-family properties, and the fact that many of these multi-family buildings need renovations, so we can force appreciation.

Also, much easier ways to "force appreciation" and valuation through rent raises and fees. 

If its less then I will have to carry the remainder of the loan and possibly be forced to pay it in full as well (or switch it to a personal loan since theres nothing to take back if I default). 

This means that the electrical is likely made from copper and is grounded.Running new ground wires and fishing wires behind walls can be very expensive, so having electrical that is similar to today's code is a plusProperties in this era also had ductwork - meaning forced air heating and cooling.

Is this a way to force people to subscribe to a pro membership?

So "average down" in stocks if a crazy 30% decline happens.... yeah, if you have any $ left after margin call and forced liquidation.         

Now the buyer's agent will be even more aggressive with trying to force his "client" to get under contract & close the deal.

Force them to pay to fix it or fix it yourself and put a lien on his property if you can.