Master key systems in Brisbane

What you're actually buying

A master key system is a designed hierarchy of keys, not a box of locks. At the bottom, each door has its own change key. Above that, a master key opens every door in the system. Bigger sites add a level in between — a sub-master for each floor, wing or tenancy — and a grand master above the lot. The design work is in the progression chart: choosing pin depths so that every key on the schedule opens precisely the doors it should, and is blocked everywhere else, with no accidental "phantom" openings.

Want to see what that chart looks like? We built a free master key system designer that runs in your browser — add your doors, pick your sub-masters, and it generates and proves the whole system on screen.

Restricted keyways: the part that actually gives you control

A master key system on an ordinary keyway still works — but any change key can be copied at a shopping-centre kiosk, so you never really know how many keys exist. A restricted system uses patented blanks that only the issuing locksmith can legally cut, and only against your written authority. Every key is numbered and logged in an issuance register. When a staff member leaves and hands their key back, the register tells you exactly how many are still out: none.

Who we build them for

• Body corporates and strata — unit entries, common areas, plant rooms, with the committee holding the master.
• Offices with staff turnover — a change key per office, a master for the manager, no more "who has a key to this?".
• Schools, childcare and clinics — cleaners, contractors and staff each on their own level.
• Property managers — one system across a building, one register, one invoice. See property managers.
• Clubs, churches and warehouses — volunteers and casuals on change keys, the committee on the master.

How we design yours

• Site walk and door schedule. We list every door and who needs to open it — that list is the system.
• Key hierarchy. Change keys, sub-masters and a master, drawn up with you and signed off before anything is cut.
• Progression chart. Pin depths chosen so every key opens exactly its doors. We master only the chambers that need it, keep master pins in the 2–8 range, and stay inside the adjacent-cut limit so every key cuts cleanly.
• Room to grow. Spare "ghost" positions on the schedule — keys never cut until you need a new tenancy or a replacement master. A system without headroom is one you'll be buying again.
• Pin, cut, register. Cylinders pinned, keys cut and numbered, register handed over. Copies only on your written authority from then on.

What it costs

Systems are priced per system, not per door off a menu. The number of doors, restricted versus standard keyway, whether your existing cylinders can be re-pinned or need replacing, and how many keys you want cut are what move the price. You get one written quote before anything is ordered, and the quote is the price — no bait-and-switch, no surprise extras on the invoice.