These are all investors not radiational buyers.

It still needs fixtures, outlets, lights, radiators, kitchen and bathrooms finished, appliances, and a bit of exterior work.

- Replace bay windows and really old wood windows/damaged windows with vinyl windows and other bigger windows- Add ridge vent to the roof- Add another electric meter, install a mini-split AC system, and figure out how to split the heating for 3 units (it's currently shared and baseboard radiator heating is used throughout the house)We are thinking of DIY-ing the painting, and possibly some other things here and there in the kitchen/bathroom but wanted to also get quotes from different contractors to see what we may need help with during the renovation and whether the cost and expertise are worth it.

Depending on the age of the house its possible that there is an old boiler and radiators and no duct work. 

There are also forms for the required window guard notification, and a new one coming up for 2022 for radiator covers if your unit has steam heat.

Boiler and radiators.

The boiler recently broke and I need to change it, the question is would it be worth it to change the entire system from Radiator/Boiler system to HVAC and how much do you think it would cost aprox? 

Window AC units unsightly, and would love to get rid of radiators for personal unit.Goal 3: Ground floor conversion to duplex down.

Not sure what's involved in electrical baseboard and oil radiators. 

I'll do a radiator or baseboard heat, and I doubt it'll even need to be used much.