The roof, driveway, fence, walls, doors, flooring, air conditioners, landscaping, etc.The IRS has a depreciation schedule for each type.

for gut rehabs, including plans and permits for moving interior walls to reconfigure floor plans, bringing everything up to code, rewiring and piping as needed, new panels, etc.  

LG makes a good sized narrow washer, and someone else has a narrow dryer.For example, once when I put a new dishwasher in another kitchen, the Maytag guy insisted on a wall between the dishwasher and the stove it was next to. 

I was driving by an apartment complex this afternoon and while waiting for the traffic light to turn green I noticed a guy painting the exterior wall of the apartment with a roller.What really caught my eyes was he outfitted himself with some contraption. 

Tape the ceiling to wall joint and go for it.

I would contact an HVAC installer in your area and have them give you a rough idea as to the coverage area. 1000ft.² you should be able to get two wall-mounted units that would work off one exterior compressor.

It appears I could add a wall and add a bathroom to one of the larger bedrooms, creating a master suite on the second story.

sub metering electric typically involves rewiring a significant portion or all of the building which also means your walls will be like swiss cheese.

I was checking walls, door jams, floor, tables.....incredible!

Their is a reason Wall Street, and most private money are parking their funds into higher class assets.