Is there any existing duct work?

Everything in the basement seems like it was done a long time ago, duct work etc is all done in the basement.The house has no prints, it's from 1920.

There were no big surprises on this one except for having to install all new duct work due to rodent infestation. 

Look at all of the big stuff when you go through- Roof, wiring, furnace ( I just spent $2,500 getting a new furnace in, and did the ducts myself) , ductwork, insulation, windows, cabinets.. flooring..

Ft ranch full house FLIP..First floor is completely finished and we have moved on to the basementFinished basement has a drop ceiling with no possible way to drywall and plaster because of the HVAC ductwork.

Also, if you have hot air duct work floor mounted or close to the floor wall mounted, check for the duct covers securely installed.

In addition, I had a buddy of mine install a new furnace and central air system (utilizing the original duct work from the forced hot air system).

Here's what I'm looking at:10 units 9 2bd & 1 1bdOffer price - $125k*Currently vacant*Needs roughly $60-80k in work- There is only sheetrock, plumbing, electric, and subflooring- I'll need flooring, doors, trim, casing, paint, appliances, cabinets/countertops, light fixtures, duct work for existing HVAC units, other misc. itemsI'm in the process of getting a few bids for the work, but it'll be at least $60k easily.Here's what I'm thinking in the way of financing:20-25% down, commercial loan (if they'll loan on a vacant property needing this much work..????)

@David FernandezTechnically your boiler is an HVAC system (heating), but I gather you are contemplating replacing the hydronic heat with forced air.If the property is in an environment where there is a significant cooling season, then the extra cost of switching to a central air handler (i.e. heat pump w/ ancillary gas for additional heat), removing the radiators and lines and installing ductwork may make longterm sense.If there is not a significant cooling season, then it would be far more economical to replace your old boiler with a new high-efficiency condensing gas boiler (~95% efficient).  

Sunny Malhotra$300K sounds exorbitantly hight for conversion of a heating system, even if it includes running ductwork or hydronic lines to every unit.Can you tell us a little more about the existing heating system?