Its incredible! Never thought I'd consider moving due to lack of a garage. Almost everything is perfect living wise (renting), yet the number of sleepless nights, with people messing with the bike outside the house, means I seriously considered moving.
I presume AndyBrad is in a similar situation to me that he either has no rear garden or access to it (I have no access). I've considered this option but sadly there are none near enough to where I live.
I have one suggestion. A dummy camera outside on the building somewhere can be a good deterrent. I'll leave the rest to those with actual garages (envious)