Very simple to do.1) In the hole you, spray some suspend sc insecticide inside the hole. https://www.amazon.com/Suspend-Insecticide-USA-Supply-Eradic...2) Get a beekeeper suit, just in casehttps://www.amazon.com/Professional-Ventilated-Sheepskin-Bee...3) cut open the area.4) Spray inside the entire wall the suspend SC5) Dry out and close up the wall.If this cost you $200 and some time, I'd be amazed. 

In many jurisdictions any lease 24 months and longer basically conveys additional rights and a simple eviction is no longer feasible. 

DMs are a great way to communicate on the site, but you can judge the tenor based on when you received the DM.

Jerrell,That would be a pretty simple process you could use a renovation loan or do a cash out refinance. 

If you do cover it I would cover it in sheet metal or something simple and cheap.

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.

A contract issue is a simple refund most of the time.

You could start off all cash, and have those houses as collateral and communicate that to lenders.

Simple answer is it depends on your market and what other comparables have @Natali Cobb.If you are doing a renovation already, then it makes a lot more sense than not. 

@Carlos LezEvacuation plan is a simple plan like you see on every hotel door.