At Alliance airport, a new tenant is moving into the hangars that American Airlines abandoned.

None of these factors operate in a vacuum, but instead they operate in concert.

AZ and other places that were created and sold in those days.. it was a huge industry that pretty much died as land use laws became regulated.as for being a top gun I wanted to be an airline pilot but had to settle flying myself and buying my own airplane to live the life I deserves as a Real Estate broker investor/ lender/ builder/  BP nut

Periodically a small regional airline will start flying there but so far it hasn’t stuck.  

You are potentially allowing them to "drive"/live in your house that is worth far more than a car or an airline ticket.

I only have maybe 10  the airlines I fly.. 

I co-own a management company statewide but HQ in Tampa.We use Abnb, VRBO/Homeaway, Booking.com, Allegiant and JetBlue Airlines, Google Vacation Rentals, Marriott Homes & Villas, and some other smaller ones that do not bring in much like Home2Go etc. 

Outbuildings didn't have to be touched beyond basic clean out.I agree with others who have stated that plumbing and electrical can get you, but it's so worth working with a jack of all trades general contractor who knows her/his stuff and you know codes so you can give very specific direction and have them get the job done without having to use a full-fledged plumber.The following has nothing to do with your question about biggest expenses, but may save you big dollars in the long run:We were given some tips that have paid off: vacuum out your HVAC system to the best of your ability prior to inspection (inspectors see dirt or dust and they give you poor marks and tell potential buyers that a professional needs to be brought in to clean out the system); run Draino through your tub/shower drains (if you're leaving existing tub/shower in tact) prior to listing and test the drains to make sure there is good flow (we might or might not have used the tubs to clean paintbrushes, which resulted in REALLY slow drains); If you have a hand dug or shallow well, run bleach through it (lots of instructions online as to how to get bacteria out of the system when a hand dug well is involved) and flush the bleach immediately prior to inspection.I hope some of this helps. 

Do you have a vacuum in each property or does cleaner bring their own?

If the answer to the second question is more than $10K above the answer to the first question, it's probably a good investment.That's a very simplistic way to look at it, though...In real life, unfortunately, you can't just look at each component of the rehab in a vacuum like that.