These people might be able to help you.
http://www.landandfarm.com/search/Ar...land-for-sale/
I don't have anything to do with them at all. I do spend winters in AZ and have a modicum of insight. If you want to be by yourself, you can do so if you buy enough property. Doing this will almost guarantee that you will be "off the grid" requiring a generator or perhaps solar power, ( which in AZ is truly viable) and drilling a really deep well which is also viable depending upon your location.
The ground is pretty rocky and to build a proper berm you will need a sturdy bull dozer and blade.
At all costs do NOT buy into a Home owners association.