Then he sprayed coil cleaner on the coils.It more than doubled the air flow, and it was something I could have easily done myself, except that he pulled the unit out of the case in order to reach one side, and I probably wouldn't have risked doing that for fear of damaging duct work or plumbing.The furnace needed a new sequencer and the outside unit got a diagnostic to make sure it was OK.

And if you do your research, you can easily argue your case in regards to the value you want.

I'm pretty sure that we don't have a case in court.

(That's not the case in the example you provided.)  

Case in point is the Rental Calculator.

In our case, in order to avoid complications, most of my clients just lend funds to an investor/flipper.

Case in point, I recently listed one of our properties for sale, which is in a great market.

Tenants lie all the time about not receiving notice but if the landlord delivers as required and documents the delivery as the state requires the tenant does not have a case in most jurisdictions. 

IF that's the case in this scenario, then one could expect a Refinance Loan of between $39,750 to $42,400 which means you will have to pay, out of pocket, at closing between $13,600 to 16,250 to close the existing mortgage lien. 

I am going to assume that every market is different so that may not be the case in other areas.