Yeah, I understand this problem... Was one of the reasons I wouldn't move out and rent with one of my friends... Losing the cement patch in my back yard and dealing with a bunch of chrome hungry thieves in a parking lot was not something I was ready to do....
For a while I considered renting a storage garage; can't imagine they cost that much, and hell it would have given me an excuse to buy a generator... The other alternative is to make friends quick with a farmer who has a nice big barn, lol...