I went and seen it today. 1/4 of the rear fascia is gone, some of the soffit has vegetation growing on it, the shingles looks “okay”, the wood under the shingles are planks, the crawl space in the attic is very small, the air handler will more than likely need to be replaced, because of mold concerns I would budget for the duct work as well, but I would wait for the a/c guy to look at it.

Renovations included the following:•Previously one electrical meter and panel box, installed 4 new meters and 4 new panel boxes, complete rewire of entire building•New outlets, switches, and light fixtures•Repaired foundation•Split gas into 3 meters•Brand new ductwork, furnaces, and Central AC for Units A & B•New gutters & downspouts•Roof, flashing repaired•Trees around house removed•Entire exterior painted•30 windows replaced•2 new water heaters•Replaced about 75% of plumbing•Cleaned out garages, installed divider, and installed new garage doors•All 3 units:• New floor & paint, drywall repair• New kitchen cabinets, counters, appliances• New toilet, shower/tub, vanityPurchase price: $85,000Renovations: $175,000All-in, including closing & holding costs: $270kAppraised at $306,00080% LTV cash out refi (cash back after fees): $236kSo I'm left with about $34k in the deal. 

You will need to make sure there is duct work running to the room for heating and cooling, proper insulation, a window or two, etc.3.

The duct work was already in place so All I had to do was install a furnace and run a new gas line and have the project inspected.

If not, have insulation contractor spray several inches of cellulose. 2) be sure the duct work is not leaking air.

There was no central heating and cooling, so I added it complete with new duct work.

I have them in one rental and know they are more common in some new builds in some areas as you don't need the duct work. 

Of course, an experienced contractor would bring this issue to you in advance and resolve it but he overlooked the fact where a ductwork for a central air is not feasible.

This is assuming you will be able to keep the existing ductwork.

The only things we (he approved) hired out were the new roof, new hvac and ductwork, and new septic system.