.) -- This 4 unit MIGHT be a good candidate but BOY, we'd be talking 3 floors of replacing radiators with baseboard.

It can get down to 20 below here, granted its inside but cold still radiates in on the floors.

I point out the water saving toilets, efficient radiators and row house configuration, the energy efficient windows and light bulbs.

I was not in charge of the rental when it became vacant, my mother was and she was on chemo and radiation (she did not want to admit she was incapable).

The 10 family has a central boiler and radiators in each of the units.

Boiler has been removed but radiators are still in every room.- Every unit is nearly identical- all 2/1. 2 units per floor, 2700 sq.ft. per floor.- Each unit has nice original hardwood in good condition that can be refinished.- Paint is peeling of the walls and a lot of plaster is broken.

I think that the current owner is even paying all of the individual heating and electricity meter bills)The heating is one system with radiators in the units.  

How much should I expect to pay to convert a 2 story townhouse plus a finished basement from radiators to a forced air system?

It turns out that one of the rooms had an electric baseboard heater as opposed to steam radiators in the other rooms and this was causing the sharp increase in their electric bill.

This could mean sewer lines, duct work, radiators, rotted rafters, so old and hidden.