I did use a contractor to help out with some of the major repairs (42 windows, brand new plumbing, new hardwood floors, and converting from radiators to central air) the rest I did myself so I got exposure to working with contractors and truly understanding what kind of work is involved and what some of the costs in a rehab might be and how to survey a property for needed repairs.

If you see radiators, check the basement to see how many boilers there are.

These are great when you want to keep a hot water/radiator heat system, not run ducts, and get your A/C.

I'm looking at a building where the disclosure has an EPA report for remedial action completed 20+ years ago due to a radiation superfund site that was found nearby in the 1960s.  

I had one furnace for the entire house and all the pipes to the radiators and the radiators were cut out.

During the rehab, we encountered… a break-in that removed old radiators (fortunately, we were planning to remove them anyhow); a complete failure of the relatively new boiler; a complete failure of the A/C system; rotten floor joists in an existing addition; missing ceiling joists in an existing addition (only 4 joists over a 20’ span); a rotten subroof covered up by 5-10 year old shingles; and more.

One other thing - I see you have Radiators.  

The unit was a SF legally converted into a duplex and currently is heated via Water Boiler with radiators through out both units.

Each unit currently only has radiator heating.

I am very visual and I like information radiators that are always on the wall staring at me to track my goals.