Are you going to go into a meeting and not have a pest/ roof/hvac report on this house you have under contract? 

For example, 10 years down the road I want to look at average roof prices based on square footage - That's hard to do with 100 excel sheets. 

We're talking about tearing up all the pee-soaked carpet (dogs..) and bleaching/disinfecting the concrete foundation underneath, replacing a majority of the second floor sub-floor, fixing the roof, fixing the HVAC, repairing the garage (door hanging on by a thread), scrubbing and disinfecting all the cabinets (roach feces everywhere), tearing up and replacing the landscaping, fixing the roof, inspecting and repairing any water damage... the list goes on and on.

I will probably want to refinance at least 80% of that into something fixed at some point to hedge against rates going up.Monthly costs:* debt service = $441 (141,000 *0.0375/12)* insurance = 78 (quote from Geico)* HOA: 860* taxes: $149 (it's $894 each per year)* repairs: $100 (I'm estimating a little less than with an SFR because with a condo I don't worry about the roof, the hot water heater, landscaping, etc.)total: 1628Monthly income: $2660 (1410+1250)Net: 1032Cap rate = 8.7% (1032*12/141000)Things I didn't include: closing costs, vacancy.

He's very skilled and capable of everything from roofing to finish carpentry.  

The problem is that the existing home was not maintained and has major issues (foundation, sagging floors, mold, possibly a new roof and new electrical) so I'm trying to get a ballpark for what it would cost to bring the existing house up to rental quality vs what it would cost to just bulldoze it and build new, or if its even worth touching at all considering the value of the property. 

I don't have info yet on HVAC, plumbing, roof condition. 

This goes the same for capital expenses, hvac units, roofs etc.

They should be taking care of all of the big-ticket functional items - roof, hvac, water-heaters, plumbing, electrical, flooring, sinks, tubs. etc.If they are just throwing down paint and carpet, then you'll probably have a high capex in the next 5 years.James

Usually they will inspect a portion of the units if it is over 10units and then look at mechanicals, roof, structure, exterior, etc.