Sometimes the HVAC duct work is in the slab as well.  

Look in to mini splits as they as the 110v units often require no electric upgrades nor duct work

As one example, I'm using empty steel barrels to support my vanities, I'll have exposed ductwork and electrical conduit, and I'm just using a clear coat epoxy over the existing container floors. 

I pay the cost of the permits.To demo the whole house - $3,000 plus I pay for the dumpsters.New Roof - $3,000 Waterproof basement - busted up concrete and installed french drain system  fed into sump pump (kept existing sump pump) and water seal paint the inside (no outside work) $5,000.Frame whole house - $3,000 (basically basement and main level.. upstairs didn't really change)Drywall - delivered, hung, and finished - $32 per sheet he estimates 120 sheets needed ($3,840 total)Insulate all walls and attic - $1500(*) Rough electrical including permits,new panel & wire - $4000  (outlets, switches, cans, fixtures, etc. additional)(*) New duct work - $4,000 ... seems fairly simple with the house demo'd and being such a small house. 

I'm also planning to install AC on the side I live on which will run me about $3,000 since I do not need a new furnace and ductwork because the side I live on is forced air.

You may then need to add a little insulation and move some electrical and duct work in the new ceiling space.

Probably passing York Rd,but close to it, you might not get anybody from     university if that is the goal.    1) Finishing up a basement could be min 6k-7k or  way more, depending on the condition, how you are finishing it, who is   doing the work, what you are adding, if duct work involved etc...    2) Typically %75.

The company we use charges $400 for a whole house cleaning.If there's no mold, we don't normally clean the ductwork unless we believe it's necessary for other reasons.

For a landlord there are innumerable reasons to avoid water piped systems and avoid having to run ductwork 

Purchase price: $135,000 Cash invested: $50,000 Sale price: $293,000 Living flip working full time job-full kitchen remodel-replaced all plumbing-new duct work with insulation-relocate and redesign fireplace-full 1st bath remodel-add 2nd full luxury bath (double shower, bidet, radiant heat)-convert sun room to 4th bedroom with radiant heat flooring-replaced all windows-upscale woodwork inside-repaint whole house inside and outside First 4 years forced equity and another 4 years market bring us another surprise with icing on the cake (market going up) Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?