You could always run your numbers at 5-10% below that ceiling and also factor in the additional carrying costs.

I already walked through the property and the only thing I could see is that it definitely needs a new roof, and it has water stains on the ceilings, so I am going to estimate for cosmetics and other repairs around $32,000 max for the interior and exterior updates.

We are renovating our rowhouse basement in and will be digging down about 2 feet to achieve 8-foot ceilings and need to underpin.

Every neighborhood has SOME sort of ceiling (sometimes it's a 200k window, sometimes it's 20k). 

I am not overly-handy (I never owned tools until I bought a duplex) - so far I've done basic electric (installing an outlet, adding a junction box, putting in receptacles, removing breakers, fixing a 3 way switch -- all things an electrician wouldn't touch -- or would charge a couple hundred bucks to do, cost me about 7 dollars - literally), replaced an exterior door, removed rotten siding and put up new siding along with replacing the plywood behind it, re-built the rotten framing of a garage wall, installed a ceiling fan, and just about a thousand other things along the way.

They have:- kept a ferret without a deposit or approval- just put a hole in the wall- painted all the bedrooms ridiculous colors- Havent oaid their trash bill in over 3 years- replaced all the ceiling fans and did the electrical themselves (without a license)And multiple other things.

I have been told that this can very difficult and costly to do due to opening walls/ceilings.(2) Install a mini split system (outside condenser and wall units) for the second and third floor.  

If adding a unit to the basement, the ceiling height for anything from a triplex and bigger is 7'6" which is different than residential ceiling heights in a SFH or duplex which can be 6'4".  

The other type of calls I get are, "would you pay to replace this ceiling fan" or "can I paint this room".

If you need anything worked on that's hidden behind walls, floor or ceiling or the roof, it's going to get expensive quite fast.