Off market deals can be a great source for potential properties.

Most are all local lenders from that state that's giving me loan terms.But on your terms itself, let's say the loan is for 800k-1million, the potential return from the property is close to 2x to potential mortgage, what rates are you current seeing in the market? 

With the tenant friendly courts in Denver it's probably not a bad idea to cut your losses and send them on their way with their $630 but just be sure to tell the whole truth and nothing but the truth when the next potential landlord calls you up for a rental history verification. 

Questions:- How/where do you source potential deals?

Having a potentially higher earning job is a big benefit when it comes to REI.

It's a bit lower than what you were getting, but it could save you the hassle of finding a new tenant and dealing with potential vacancy periods.

@Nicholas Arcidiacono online rental applications are the standard now.

The utility company should also have contacted them (or you-both your names should be on the utilities when the house is vacant) to let you know about a potential leak. 

Good TK addresses that, so with that solving the biggest failure potentials.

Talk to him and tell him you need to sell the house and his "collection" will deter potential buyers.