In a suburb people drive through constantly, an unfamiliar face or vehicle carries no information at all, and hardware has to carry the whole load. Here it does not. A pocket with no through-traffic gives residents a genuine chance of noticing something, and that is worth more than most upgrades a household could buy. The sensible response is to protect that advantage rather than to replace it with steel.
What that means practically is spending on condition. A deadbolt that is too stiff to throw, a gate that has run dry, a door that has dropped so its bolt misses the keeper — every one of those quietly removes protection the household already has, and none of them is expensive to correct. It is dull advice and it is the right advice for this suburb.
For the complexes there is one addition. Shared entrances, pedestrian gates and vehicle gates belong to a scheme rather than to a resident, and they are the doors most likely to be running on hardware nobody has looked at since the development was built. A trustee body that has those checked periodically is doing considerably more for its owners than one that adds cameras, and it is straightforward security lock upgrade territory.