Looking at a Multifamily built 1920...possible issues that old?

[Peter Mason]

I am currently talking to a guy here in the St.Petersburg area about a 7 unit MF. FSBO w/ owner financing.

Lets assume the numbers work on my initial number crunch and its a good cash flowing property.

The main house of the property was built in 1920 and at some point a long time ago it was split up into 4 units. The other 3 are in a separate adjacent building that was built in 1953. All units in both buildings are separately metered for both electric and water.

The 1953 building I am not too concerned with as it is a bit newer and CB construction. My concern is the 1920 wood framed house. That is almost 100 years old which is hard to wrap my head around. The owner seems to take good care of it. When purchased in 2003 they did a precautionary termite tent and followed up with termite program till present day. Both roofs done in the past 3 years and new double pane windows throughout.

Obviously (if I make an offer) I will do my due diligence and get many inspections. My question for people with experience in a house this old is what else might I be missing? Is there anything I need to think about besides the usual: termite, lead based paint, asbestos, etc

My plan is not to buy and hold this property but to add value and sell within 1.5 - 2 years.