On a conventional property, the owner is responsible for everything from the street inward, and that produces a fairly even distribution of attention — the gate, the burglar bars, the front door, all considered by the same person at roughly the same time. Inside a controlled-access development, the outer boundary belongs to the body corporate or the homeowners association, and it is usually excellent. The consequence is that the individual dwelling behind it frequently carries the least considered hardware on the whole property.
This is not carelessness. It is a rational response to a genuinely good perimeter, and for most purposes it works. But it means the builder's original cylinder is often still in the door a decade later, still on the keys handed over at transfer, and nobody has ever asked how many copies of those exist. Access control at the entrance logs vehicles; it says nothing about who holds a key to unit forty-one.
The town centre side of Somerset West behaves completely differently. There is real retail, professional offices, medical suites and light commercial stock here, all with ordinary street frontage and no shared perimeter at all, which means commercial locksmith work in this area looks nothing like the residential work half a kilometre away. We treat them as two separate problems, because they are.