A Simple thing like getting on with your neighbours could be the simple difference between them calling the police or turning a ‘blind eye’ to something happening at your home or business when you are not about. This does not mean that you have to go out of your way to befriend them, just establish a certain level of trust. Join Neighbourhood watch and encourage them to do the same if they are not already involved.
Good burglars know where to check for hidden keys in letterboxes and under mats etc. So it is a really good idea not to leave them there. A better idea would be to leave a spare key with a neighbour or somebody else you can trust. If you are going away for a while ask your neighbour if he can move your car every now and then in your driveway, or if you do not trust them that much, just ask if maybe they can park in your driveway.
Communicating with your neighbour is a good way of establishing trust. Give them a friendly wave every now and then or stop for a chat if you see them. Help them out occasionally if it looks like they might need a hand, instead of waiting for them to ask. You may never know when you may need their help. Doing all of this establishes a form of territorality, kind of a ‘If you scratch my back, I’ll scratch yours policy.’ It doesn’t mean that nothing will happen at your premises, but it can reduce the risk if you get a friendly neighbour alerting the authorities if something does happen.