Thank you for the replies.
I have a cctv system ready for installation that will trigger an email to a set distribution list with a .jpg photograph attached which shows the scene at the moment the alarm was triggered. It's backed up to a remote hard drive that can be hidden and secured.
If the alarm is triggered, I can deploy a counterinsurgent strike immediately. My strike team is comprised of me - armed with a flare gun, wasp spray, noise makers, a rock if I can find one, threatening words and an unfortunately high-pitched scream if the situation escalates. I’m trained and not afraid to use any of the above.