I keep the 5er and TT at a storage facility that's only about a mile from the house. I have used it for 12 years without any problems. One advantage for me is no one knows when I take the RV on a trip. When parked at home they know when your gone.
Con- If facility is not secure can lead to theft. Some people have to bring home to load, (not a issue for me) I leave my RV ready to go except food.
I would get covered storage as well the sun does a number on a RV. The ideal would be to have a large enclosed building at home.