At 50 units they say a owner could high a full time employee to run their operation.  

I liked what @Brandon Goldsmith had to say as well about a lower down payment on an owner occupied home carrying less risk.  

Interested to see what others say as well.

Pittsburgh itself is also pretty isolated from overall housing trends per say as far as severity

As an apartment building, which is how it sounds like it is being managed, I would say a 10-12 CAP but condition is a huge wild card.

Unfortunately any GC that says he can tell you exactly how much a project will cost on the spot is saying so with one of two mindsets:1: Say big numbers so he’s safe2: Say a number that sounds good with full intention of asking for more money when you are 60% through the project.

When you say "a general rules list," I'm interpreting that as a set rental criterion.

Could this challenge influence the price I sell the building at, if I decide to sell it ... let's say a couple of years from now?

For example, say a property was purchased for $50,000 and needed $10,000 worth of renovations and has an ARV of $100,000.

Yeah, I'd say a steak dinner (depending on prevailing restaurant/covid regulations!)