Master Key System Design: before you call

A self-storage operator wants the office, the tenant gate and the equipment shed on three different levels of access for staff, but every lock on the property currently answers to the same handful of interchangeable keys handed out over the years.

Worth answering before the call

Are any doors on a barrier-free path of travel? Which roles or departments need genuinely different levels of access? Do any doors already use keypad or card-based access?

Can key duplication be restricted so copies cannot be cut elsewhere?

Yes. With a restricted or patented keyway, blanks are only available through the manufacturer's authorized record, so a copy is not cut at an ordinary hardware counter without going through that channel. This does not make a key impossible to duplicate, but every legitimate copy passes through a record the owner controls, which a standard keyway cannot offer.

What should I have ready before the assessment visit?

A rough list of who currently has access to which doors, any existing keys or cylinders you can point to, and a sense of upcoming changes such as new hires, a department split, or a unit due to open. None of this needs to be exact; the assessment is partly built around confirming or correcting whatever the business already assumes about its own access.