Master Key Systems

A master key system is not simply cutting one special key that opens everything. It is a carefully engineered hierarchy of keying levels, built into the mechanical pin stacks of each lock cylinder. At the foundation, each lock has a change key — the key issued to an individual occupant that opens only their own door. Above that sits the master key, which operates every lock in the building or zone. Larger properties can add sub-master levels for department-by-department control, and above all of those sits a grand master key held by ownership or senior security personnel. The engineering challenge is making all of those levels function correctly within a standard cylinder without creating accidental cross-opens — a design flaw that can silently compromise your entire security layout.

This is precisely why the design phase is not a step to rush. Our technicians sit down with you — on-site, at your property — to map out your access requirements before any hardware is touched. We account for the number of doors, the number of access tiers, current and anticipated staff size, and the grade of lock cylinder your doors already carry. Many Beverly Hills commercial properties use high-security mortise lock assemblies, which are the preferred platform for master keying because the deeper, more complex cylinder allows for a far larger keying matrix. If your building is running standard knob-lock or lever cylinders, we will advise you honestly about whether upgrading specific points to mortise lock hardware makes sense for your security goals.

The mortise lock is the workhorse of commercial access control, and for good reason. Unlike a cylindrical door knob lock or a simple deadbolt retrofit, a mortise lock body is mortised — meaning recessed — into the door slab itself, making it structurally anchored and significantly more resistant to kick-in and pry attacks. The cylinder sits within a full-function lock body that combines latch, deadbolt, and often an interior lever into a single integrated unit. For master keying purposes, mortise lock cylinders accept a larger pin stack configuration, which is what gives system designers the room to engineer multiple keying levels without sacrificing mechanical integrity.

We install, rekey, and service mortise lock assemblies from reputable manufacturers including Schlage, as well as other commercial-grade hardware suited to the demands of high-traffic Beverly Hills properties — medical offices, retail suites, luxury residential lobbies, legal firms, and production facilities. If your existing mortise lock cylinders are worn, have been rekeyed too many times on the same key code, or are simply incompatible with the hierarchy you want to build, we will source and install fresh cylinders on the spot during our mobile service visit. The goal is always a system that functions smoothly every time a key is inserted — not one that binds, sticks, or gives your staff a workout every morning at the front door.

Rekeying is the most common master key service call we receive, and the reasons are almost always the same: an employee left under difficult circumstances and did not return keys, a property changed management, a tenant vacated a unit and key accountability is uncertain, or a break-in — or near break-in — has shaken confidence in the current system. Rekeying changes the internal pin configuration of each cylinder so that all previously cut keys become mechanically useless, without replacing the lock body itself. It is a precise, effective, and far less disruptive process than a full hardware swap, and it restores your keying hierarchy to a known, clean state.

A few things we have learned from experience: businesses often wait too long after a key is lost or an employee exits before calling a locksmith. Every day that passes with an unaccounted-for key in circulation is a day your access hierarchy has an invisible gap. If you are managing a multi-tenant property along a corridor like Beverly Hills' business district near Wilshire Boulevard, a single unresolved key return can compromise not just one suite but any shared-access zones — lobbies, parking structures, mail rooms, and utility closets. Our 24/7 availability means you do not have to wait until Monday morning to address a Friday afternoon personnel situation. Call (424) 955-3098 and a trained technician will be dispatched to your location, day or night.

Beverly Hills is not a generic commercial market. Properties here range from intimate boutique retail on Brighton Way to sprawling multi-story professional complexes off Santa Monica Boulevard, and the access-control needs of each are completely different. A single-entrance retail suite needs a simple two-level system — perhaps an owner key and a staff key level. A multi-floor medical or legal office building may need four or five distinct access tiers across dozens of doors, with specific sub-master zones for server rooms, executive floors, and common areas. Our technicians have worked across this range, and that hands-on local experience shapes the practical advice we give during every on-site consultation.

Fun fact: people lose their keys more than you think — and businesses misplace or fail to recover far more master-level keys than most security audits ever surface. It is not about carelessness; it is about the volume of daily transactions and the reality that key accountability systems often live in a spreadsheet nobody updates. As for pricing — we do not quote figures in the abstract because an honest price depends on real variables: the number of cylinders involved, the type of lock hardware (a door knob lock cylinder versus a full commercial mortise lock body has a very different parts cost), the time of day of the service call, travel distance to your location, and whether any new hardware needs to be sourced and installed alongside the rekey. What we will always do is confirm an exact price with you before any work begins — no surprises on the invoice. It's not just about locks, it's about peace of mind, and that peace of mind starts with transparency. To get a confirmed quote for your property, call (424) 955-3098 — we answer 24/7.

Hollis Locksmiths is a full-service commercial locksmith for the Beverly Hills area. Our mobile technicians carry equipment and hardware to handle an extensive range of commercial and residential security needs in a single visit. Our services include: master key system design and installation, master key system rekeying, commercial mortise lock installation, mortise lock cylinder replacement, commercial mortise lock repair, door knob lock installation and rekeying, commercial deadbolt installation, high-security cylinder upgrades, grand master and sub-master key hierarchy setup, restricted keyway system installation, key duplication for existing master systems, emergency commercial lockout response, after-hours lockout service with damage-free entry methods wherever possible, lock hardware consultation and security audits, electronic keypad and access-control integration alongside mechanical locks, panic bar and exit device installation, storefront door lock service, multi-unit residential master keying, property management rekeying programs, post-break-in emergency lock replacement, safe installation referral and lock box setup, mailbox lock rekeying for commercial properties, parking structure and gate lock service, cabinet and filing cabinet lock rekeying, and padlock and hasp installation for storage and utility areas. Every service is performed by trained, insured technicians who come directly to your Beverly Hills location.