Landlords tend to think of a master key system as a convenience — one key instead of forty. The convenience is real, but the documentation underneath it is what actually saves money.
The chart is the asset
When a key goes missing, an undocumented estate means rekeying everything it might have opened. A charted system tells us exactly which cylinders are exposed. That is usually eight cylinders instead of forty, and it is the difference between a morning and a week.
Design it with room to grow
A system built to exactly fit today’s doors runs out of unique key combinations the moment you buy the building next door. We design in headroom as standard, because retrofitting a hierarchy costs more than planning one.

