It needed a new compressor which would've cost me $4800 vs $6600 for new AC, obtained multiple bids for both).So I had the AC installer come take a look.

Appliances has its own head aches ,wear and tear and complaints .Circling back to your case ,your appicants sounds too pushy which is a red flag.They want it for 6 months ,when clearly your ppty is clearly advertised for LTR .They want utilities included and washer and dryer installed.BIG RED FLAG.They are too demanding.You are the Landlord and not them.Donot flex your criteria and property for the applicants.Tomorrow they will come back and say the compressor unit is too loud and must be replaced,cabinets are not shaker style and closes hard while closing and needs to be replaced etc etc.To me this above mentioned applicants are a pass .

I would go to the house with my air compressor, hook it up, and see where the leak is.

Bring an air compressor with fittings, hook it up, go around listening for air leaks.

You can do one compressor and tap into multiple parts of the house from the outside if needed.

That's what I think a fair price is.It does depend on how far it is to the roofing supply store, how far it is for the workers to travel, if there's any rotting wood that needs to be replaced and how busy they are (busier = higher profit).You could buy a couple ladders, a compressor, a 100ft extension cord (14/3), 50 ft of rubber air hose, a roofing nail gun, a caulk tube a couple shingle removers and pick up some day laborers who know how to roof. 

roof looks solid, saw the newer HVAC compressor, and the landscaping seems like it won't be a huge burden.  

The contractor spaces I've seen over the years have always had a big 220 plug where they could plug in an arc welder or a big compressor.

New vinyl plank flooring and carpet were installed throughout the home, all of the electrical outlets were replaced, and the A/C condenser and compressor were replaced.This property is currently listed for sale!

Investment Info:Single-family residence buy & hold investment in North Little Rock. 2021: new metal roof, painted the interior and exterior, sanded and painted the kitchen cabinets, and installed a new furnace.2024: New new vinyl plank flooring and carpet were installed throughout the home, all of the electrical outlets were replaced, and the A/C condenser and compressor were replaced.This property is currently listed for sale!