A while back I stumbled across garage "clubs" where several enthusiasts got together to share garage and shop space. Bridgehampton Motoring Club is a great example (for camera user=visitor, pw=bmc). Their facility is one shared open space as opposed to individual units like the others I've looked at. A basic summary is:

* 24 hour key code access for all members via highly secure gated entrance
* Temperature and humidity controlled environment
* year-round Individual access to power for battery trickle charging
* Member access to full suite of Pan/Tilt/Zoom cameras at the facility which may be viewed over the internet
* Bi-weekly mechanical integrity routines
* Selected facility areas, lounge and picnic area available to members for personal events

Apparently it took about $1.2 million in capital to build the facility and seed the business. Fees start around $300/month. I just looked at storage spaces yesterday at Infineon Raceway (cost was $.75 per sq.ft., 1300 sq.ft. was smallest unit).

Another useful set of resources is the Storage & Transportation site list.