Additional ductwork will need to be ran to a few rooms. 

When they vacate you'll need to wash all the walls and ceilings, possibly re-paint, and clean all the ductwork because of their habit. 

This may involve adding ductwork, installing a separate HVAC unit, or using portable heating and cooling units.

I think it needs duct work as well to be considered livable square footage.

I think contractors would rather do work for those who are less aware of the business, a customer who will pay more than a seasoned investor.When I start this business, I needed things done, duct work, furnaces, roofing, dry wall.I had a house on St.

Freshened up the first floor and increased rentUpstairs we did a full remodel:- Bathroom- Kitchen- Flooring- Baseboards- Updated Electrical- Blew out ceilings and moved duct work into the attic- New closet doors- Freshened up the deck- Removed a tree- and much more- Exterior refreshThis renovation cost us close to 40k including the first floor What was the outcome?

Then there's your HVAC ductwork that's been contaminated, circulating that crap. 

Crawlspace completely covered in water, couldn’t see past the opening without crawling inside as there was plastic hanging down, structural supports not properly installed, ductwork not attached to the HVAC system literally laying in the water, the roof is literally not even attached at one of the joists where it should be attached to the house, and wiring chewed through in the attic of the garageI feel those are items worth negotiating on right?

It was close to 2 years before they installed duct work to the vents and a year before a AC UNIT was installed.

I want to separate the utilities so they're paid by the tenants each month, I've gotten quotes to separate the existing furnace from the ductwork and add in a second furnace (10K).