Pro Mississauga Locksmiths Service Team
Local locksmith team
Aug 27, 2026 10 min read
If you've just moved into a home on Hurontario Street, handed over a spare key you'd rather not think about, or had a roommate situation change unexpectedly, rekeying your locks is one of the smartest — and most overlooked — security moves you can make. It's faster than a full lock replacement, and in many situations it gives you exactly the same peace of mind without the extra work.
This guide breaks down exactly what goes into a rekeying quote in Mississauga, when rekeying makes more sense than swapping out hardware entirely, and what factors will shape the final price a technician gives you. No guesswork, no vague estimates — just a clear picture of what to expect before a Pro Mississauga Locksmiths technician ever knocks on your door.
## What Does It Mean to Rekey a Lock — and What Actually Happens?
Rekeying a lock means reconfiguring the internal pin tumblers inside the lock cylinder so that the old key no longer works and a new key operates it instead. The lock body, the door hardware, and the strike plate all stay exactly as they are. A trained locksmith removes the cylinder, replaces the driver pins and key pins with a new combination, and reinstates the cylinder — all without touching your door frame or installing new hardware. The result is a lock that is, for all practical purposes, brand new from a security standpoint.
This is especially valuable with mortise locks, which are common in older Mississauga homes and many commercial properties along Dundas Street and throughout the City Centre corridor. A mortise lock cylinder is a self-contained unit that slides into a deep pocket (the mortise) cut into the door edge. Because the cylinder is separate from the lock body, an experienced locksmith can rekey a mortise lock cylinder quickly and precisely — resetting your security without disturbing the elegant, heavy-duty hardware you may have paid good money for. If you've recently acquired a property with mortise locks already installed, rekeying them is almost always the right first step.
## The Key Factors That Determine How Much It Costs to Rekey a Lock in Mississauga
There is no single flat price for rekeying in Mississauga, and any quote you receive should reflect your specific situation — not a number pulled from a generic list. The factors that influence what you'll pay include: the type and brand of lock (a standard Kwikset or Schlage door knob lock is straightforward; a multi-point mortise lock or a high-security cylinder requires more time and specialized pins), the number of locks being rekeyed in the same visit (rekeying several locks to match a single key is more efficient per lock than a single-lock job), the time of day (an emergency locksmith call at 2 a.m. reflects the reality of 24-hour availability and the technician being dispatched immediately), and the travel distance to your address within the Mississauga area.
Parts also matter. If a lock cylinder is worn, damaged, or an uncommon brand, the technician may need to source specific pinning kits or a replacement cylinder entirely — which changes both the time and material cost. Before any work begins, our team will assess the locks on-site, confirm exactly what the job involves, and give you a clear, up-front price you agree to before a single pin is touched. There are no surprise charges added after the fact. If you'd like a sense of what your situation might involve, call (289) 809-6138 and describe your locks — we're happy to talk it through before you commit to anything.
## Rekeying vs. Replacing: How to Know Which One You Actually Need
The honest answer is that most homeowners and tenants who call about lock security don't need full replacement — they need rekeying. If your existing hardware is in good condition, operates smoothly, and you're simply changing who has access (after a move, a breakup, a contractor finishing a job, or a lost key), rekeying a door lock gives you a fresh key profile without discarding working hardware. This is particularly true for quality door knob locks and deadbolts that have years of life left in them.
Replacement makes more sense when the lock is physically damaged, when you're upgrading to a higher security grade, when the existing lock type no longer fits your door (common in renovation projects around Port Credit and Lakeview), or when you want to add features like a mortise lock set to a door that currently has only a simple knob. A skilled locksmith will tell you honestly which option serves you — not which one costs more. If a rekey is all you need, that's what we'll recommend. If replacement is genuinely warranted, we'll explain exactly why before proceeding.
## How Long Does It Take to Rekey a Lock — and When Can You Get Same-Day Service?
One of the most common questions we hear is how long does it take to rekey a lock. For a standard residential deadbolt or door knob lock, a qualified technician can typically complete the job in fifteen to thirty minutes per cylinder once on-site. A home with multiple locks being rekeyed to match a single key — a service sometimes called keying alike — takes longer in total but is still usually wrapped up within an hour for most properties. Mortise lock cylinders may take slightly longer depending on access and cylinder condition, but they are well within a standard service call.
Same-day and emergency service is available across Mississauga around the clock. Whether you're in Malton, Streetsville, Clarkson, or anywhere along the Lakeshore, a Pro Mississauga Locksmiths technician can be dispatched to your location at any hour. Emergency locksmith situations — a lost key late at night, a security concern after a break-in attempt, a landlord needing access restored — are handled with the same thoroughness as a scheduled daytime appointment. The difference is that emergency calls are prioritized for immediate dispatch. Call (289) 809-6138 any time, day or night, and we'll confirm an estimated arrival window right on the phone.
## Residential, Commercial, and Automotive Rekeying: What Changes Between Jobs
Rekeying looks different depending on what you need done, and understanding those differences helps you ask the right questions. For residential rekeying, the most common scenario is a homeowner who has just moved in and wants to know that previous owners, real estate agents, or contractors no longer have a working key. Rekeying every exterior entry point — front door, back door, garage entry door — during a single visit is the most cost-effective approach because the technician is already on-site with the right tools and pinning kits.
On the commercial side, the stakes and the hardware are both more complex. A commercial locksmith job might involve a mortise lock on a main entry, a series of office doors keyed to a master key system, and access points that need to work on a hierarchy — a manager's key opens everything, a staff key opens only certain zones. Setting up or resetting a master key system requires precise planning and tracking of key cuts. For automotive rekeying, the process differs entirely: a car key is cut and programmed to match a door lock cylinder and the ignition, which involves both mechanical and electronic components depending on the vehicle make and year. Each of these scenarios carries its own time, parts, and skill requirements — which is why an on-site assessment always precedes any final quote.
Our team handles all of the following and more during rekeying and related locksmith visits: residential deadbolt rekeying, door knob lock rekeying, mortise lock cylinder rekeying, keying multiple locks alike to a single key, master key system setup and reset, commercial mortise lock rekeying, office suite rekeying, storefront lock rekeying, residential lock replacement, commercial lock replacement, mortise lock installation, deadbolt installation and upgrade, high-security cylinder installation, padlock rekeying, garage door lock service, mailbox lock rekeying, filing cabinet lock service, automotive lock rekeying, car key cutting and programming, transponder key programming, key fob replacement, emergency lockout service (residential), emergency lockout service (commercial), emergency lockout service (automotive), lock repair after attempted forced entry, and post-break-in security assessment. Whether the job is a single cylinder on a condo door near Square One or a full commercial rekey across a multi-unit facility, we bring the right equipment and expertise to get it done right the first time.
Frequently asked questions
Can I rekey a lock myself, or do I need a professional?+
Technically, rekeying a lock is possible as a DIY project if you purchase a rekeying kit matched precisely to your lock brand and model, have a working original key, and are comfortable disassembling a lock cylinder without losing the small springs and pins inside. In practice, most homeowners find that the process is fiddly — dropped pins are easy to lose, and an incorrectly re-pinned cylinder can leave you with a lock that binds, fails to turn, or allows unintended keys to operate it. For a mortise lock or any lock where the cylinder is under tension from internal components, the margin for error is even smaller. A trained locksmith completes the same job in a fraction of the time, with the right tools, and guarantees the result — which is usually the more practical choice, especially when you're dealing with multiple locks or a security-sensitive situation.
How do I rekey a lock to match my existing key — is that possible?+
Yes, and it's one of the most requested rekeying services we handle. Rekeying a lock to match an existing key — sometimes called keying alike — means the technician pins the new lock's cylinder to match the cut pattern of the key you're already using. This is useful when you've added a new door, replaced a damaged lock, or want all the exterior doors in your home to operate on one key. The technician needs your working key on-site to measure the cut depths precisely and select the matching pin sizes. It is straightforward for most common lock brands and adds no significant complexity to the job.
What's the difference between rekeying and changing the locks?+
Rekeying changes the internal pin configuration inside the existing lock cylinder so a new key works and the old one doesn't — the hardware on your door stays in place. Changing the locks means removing the existing lock set and installing entirely new hardware. Rekeying is typically the right choice when your hardware is in good condition and you simply need to control who has a working key. Lock replacement makes sense when the hardware is damaged, worn, outdated, or when you want to upgrade to a different lock type — such as switching from a door knob lock to a mortise lock for improved security and durability.
Do you rekey locks for businesses and commercial properties in Mississauga?+
Yes. Commercial rekeying is a core part of what we do. This includes rekeying individual office locks, storefront mortise locks, master key systems, and multi-unit access setups where different keys need to open different combinations of doors. Commercial properties have more complex access requirements than most homes, and our team is experienced in mapping out and executing those systems correctly. If you're a property manager, business owner, or facilities coordinator dealing with a staff change, a lease transition, or a security concern at a Mississauga commercial address, call (289) 809-6138 and we'll walk through the right approach for your property before any work begins.