[Dantilla]

If the airport has received federal funding, and most have, there are rules requiring hangars to be used "primarily for aviation purposes".

Technically not allowed, but every airport has its own personality on this- Some don't care, others have gone so far as to tell pilots they cannot even have a refrigerator or extra chair in their hangar.

At my local airport, there are several hangars filled with cars and other non-aviation stuff, but there are also a few empty hangars with For Sale or For Rent signs.

As long as there are no airplanes sitting outside on a waiting list for a hangar, I have no problem.

Go ahead and inquire, buy one if you want. Just know that at some point, you may have to move the cars out, but if so, you could rent the hanger to somebody with an airplane, and have the rental income pay for storage elsewhere.

Also- And this is critical- Behave yourself when driving anywhere on airport property!! Airplanes always have the right-of-way, and if pilots hear loud engines revving, or anybody driving too fast (anything above jogging speed) you will get all cars tossed off the airport very quickly!!

My hangar is large enough for one airplane, plus space behind with a separate rear garage door.
inside right now is one airplane, one 944 race car, an older Chevy truck, and yes, a refrigerator well stocked with ice cream bars. My airports management is pretty reasonable on this matter. As long as I have an airplane in there, they don't care if there is other stuff, too. They keep talking of cracking down on non-aviation uses, but as long as there are a few empty hangars, there has been nothing but talk.