I communicate well ahead of any changes.  

I consider myself to be fairly educated but I have no clue what you are asking. 

However, it started to get a bit tough since he is no longer in communication with neither me nor the seller and he is living in the house.

There won’t be a ton of supply, so you should be able to get an idea on locations and pricing fairly quickly.

Given that the deal is off-market and there might be limited information on pricing, you should compare the property to recent comparable sales in the area (comps) to confirm that the price is fair.

Further, the court is empowered to do just about anything it wants or perceives as “fair”.  

It is in North Park, developing fairly quickly but nothing I would call 'luxury'.

He is interested in the deal but has been dragging his feet and finding it hard to get on the phone to talk to and communicate with.

The math is fairly easy given your assumptions.

Did you communicate to them a time frame for this Bee problem to be resolved??