I’m def going to dig deeper on Monday and try to find a clear understanding of this situation and previous ones.

BP has a podcast that was done years ago with a guest who wholesaled virtually from Australia sorry can't remember the episode so you have to do some digging. 

But to dig further, what are the other expenses and what does that make the cap rate or cash-on-cash return?

I found a couple of contractors who came with very good references but after digging a bit, I find out neither of them has a GC license. 

@Mary Mitchelli have not, digging into IRR a bit now, thanks for the tip.

My initial thoughts before digging at all is that he wants $150k per door, first of all that's pretty high for Mesa secondly my clients would expect at least $1500/month per door for that price.

It's good you and your wife already have some real estate experience.Presuming you live in the Philly area you should join DIG.

The only way to solve that...dig away the soil and re-partch the exterior using today's technology. 

I can get plenty of exercise with my SFH’s like climbing ladder, pushing mower, digging up and replacing plants, etc.

Found an off-market deal in a market I'm beginning to dig into.