First - find out the limits for the HOA you live under.
We could park ours in front of our house for 48 hours before being in violation of the agreement we signed with the HOA. (There was no room to park a 30' TT at our home - so that was never an option. I always tried to avoid parking it in the street in front of the house over night. Never trusted some of the local teenagers, or their parents, ability to see a TT at night.)
If you have to store off-site - most likely - start driving around and look for storage locations. Many great suggestions above about watching for theft potential.
Remove high value, easily re-salable, items like TV's and electronics. Some places you have to remove things like batteries. Depends upon the local crime rate.
I stored my boat in a locked indoor storage at $125 per month for a couple years. When I bought the TT, I moved the boat and new TT to an outdoor lot for $77.28 per month (have to pay sales tax on TT storage in Texas, but not boats ???)
That lot had one theft during the over two years I used it. The owner called us on a Sunday at 10am to report there was a theft at one unit at the lot. (We were out with out TT and boat at that time. After finding evidence of the break-in and theft, and notifying the owner of the rig involved - he called every person who had something stored in his lot and made them aware of the situation. Which I think is great customer service. Only one person decided to move their rig out after the theft.) Someone cut through the back fence, crossed three quarters of the way across the lot, jacked up a Cardinal and took all four wheels/tires and the spare.
I prefer to rent storage space from a local person who is at the lot daily. However, there are a lot of chain type storage locations which have an apartment and someone living on the lot full-time. That would be my second choice.
Full-Time 2014 - ????
โNot all who wander are lost.โ
"You were supposed to turn back at the last street."
2012 Ram 2500 Mega Cab
2014 Flagstaff 832IKBS TT