I found out a week ago that the current owner is refusing to leave/unable to find a place to move prior to closing.

If you're unable to sell quickly, will you qualify to refinance the property (cash out some of your investment) & rent the property for a positive cash flow.

If you want to PM me with one of the addresses you were unable to locate (don't worry...my reputation means too much to me to even think about jumping your claim...I'm just offering some help), I'll see if I am able to find it.  

I always read about these big time developers who are unable to get financing, pulling together these big pool of investors.

When possible, we use plant native plant species at our properties and landscape to minimize the amount of lawn.

The first question you must not assume the person in a wheelchair is unable to walk.

If you can share your numbers at least for e.g. 500 mails how many % got returned due to unable to forward/deliver? 

The carport was enclosed, garage door added and the "garage" measures 11x15- unable to park a car.

If you are unable to negotiate, keep in contact regularly to chat, see how things are going, and ask them if they will reconsider an up to date offer (market dependent).

Unless there's something in your lease that species your payment of the propane, just say no.