Long Island City Locksmiths Service Team
Local locksmith team
May 21, 2026 3 min read
If you manage a multi-tenant office building on Jackson Avenue, run a row of retail shops near Queens Plaza, or oversee a mixed-use property anywhere in Long Island City, you already know the headache of keys. Every tenant wants access to their own suite, the building manager needs to get into every unit, maintenance needs the freight elevator and the utility room — and somehow none of those people should ever have each other's keys. That is exactly the problem a master key system is designed to solve, and a skilled commercial locksmith can build one around your existing mortise lock hardware or install new locks purpose-built for the system.
This article breaks down how master keying actually works, when it makes real financial sense compared to managing a drawer full of separate keys, and what to look for before you commit to a system. Whether you are a property owner in LIC, a shop manager on Vernon Boulevard, or a small business leaseholder trying to simplify access for staff, these are the practical details that will help you decide.
Frequently asked questions
How do I know if my building's mortise locks can be master keyed without replacing them?+
Most quality mortise lock cylinders with five or six pin chambers can be master keyed by a trained locksmith. The key factors are the number of pin chambers, the keyway series, and whether the cylinder is a standard removable plug design. During a site walkthrough, the locksmith will inspect each cylinder, note the manufacturer and model, and confirm whether rekeying in place is possible or whether new cylinders are needed to support the access levels you want. In many Long Island City commercial buildings the existing hardware is perfectly suitable, and the job becomes a rekeying exercise rather than a full replacement.
What happens to the master key system when a tenant leaves?+
When a tenant vacates, the locksmith rekeys the cylinder on their door so their change key no longer works. The master key and any sub-masters above it continue to operate the lock normally because the master wafers are re-pinned to the new change key while keeping the master shear point intact. This is one of the core financial advantages of a master key system — tenant turnover only requires rekeying one cylinder, not replacing the lockset or re-issuing keys across the whole building.
Can I add electronic keypads or smart locks to a master key system?+
Yes, and it is increasingly common in mixed-use LIC properties. The typical approach is to use mechanical master key cylinders on suite entry doors for reliable, battery-free access and add a keypad or card reader on shared entry points like the lobby or freight entrance. Some high-end mortise lock bodies accept both a key cylinder and an electronic credential reader in a single unit, giving you mechanical backup if the electronics fail. A commercial locksmith can design the hybrid system, source compatible hardware, and handle the full installation.
Is it possible to pick a door knob lock, and does that mean my locks are not secure?+
All pin-tumbler locks — including a standard door knob lock — have some degree of pick vulnerability, which is why high-security cylinders with anti-pick pins and restricted keyways exist. For a commercial property where key control matters, the more relevant protection is a restricted keyway system where key blanks are only available to authorized locksmiths, making unauthorized duplication the bigger practical threat. If you are concerned about the physical security of your cylinders, a trained locksmith can assess your current hardware and recommend an upgrade path appropriate for your building's risk profile — without unnecessary upselling.
