Locks are the first line of defense for any property, but many people don’t realize how often those locks need attention. Over time, keys change hands, hardware wears down, and circumstances shift. At some point, we all face the question of whether to rekey or replace our locks. The right choice depends on a few simple but important factors—security needs, cost, and the condition of the hardware. Understanding these differences helps make an informed decision that keeps your property secure and practical to maintain.
Understanding Rekeying
Rekeying changes how your existing lock works without replacing the entire mechanism. A locksmith modifies the lock cylinder so that old keys no longer operate it, and new keys take their place. This approach preserves the existing hardware while updating access. It’s one of the most efficient ways to maintain security after moving into a new place or changing tenants.
Rekeying works best when the locks themselves are still in good condition. If the hardware functions smoothly and provides reliable security, rekeying saves time and money compared to a full replacement. It’s also ideal when you want to use one key for multiple locks by matching them to the same keyway. That convenience is often overlooked but becomes especially useful for property managers and business owners handling several doors.
When Rekeying Makes Sense
We often recommend rekeying when the locks are functional and the main concern is who has access. If someone recently moved out, lost a key, or if you’ve just bought a property, rekeying provides peace of mind without replacing hardware that still works well. It’s also a smart choice if you want to simplify your key system by having a single key open all doors.
Another practical reason to rekey is cost control. Replacing multiple locks can add up quickly, especially on commercial properties. Rekeying allows you to restore control and improve organization without significant expense. The process also takes less time, which matters when you want your security updated the same day.
However, rekeying has limits. If your locks are outdated or showing signs of wear, changing the key pins won’t address the larger issue of mechanical weakness. In that case, replacement might be the smarter investment.
What Lock Replacement Involves
Replacing a lock means removing the entire unit and installing a new one. It’s a more thorough solution because it doesn’t rely on existing components. This gives you the chance to upgrade to modern lock technologies, such as deadbolts with reinforced bolts or smart locks that allow keyless entry.
Lock replacement is usually recommended when your hardware is damaged, outdated, or unreliable. If a key sticks or the lock feels loose in the door, these are signs of internal wear that rekeying can’t fix. A full replacement ensures that both the key mechanism and physical housing are strong and aligned, which can significantly improve security.
Replacing locks is also the right move after a break-in or attempted forced entry. Even if a lock still functions, the internal damage could compromise its resistance to future attacks. In those cases, safety outweighs any short-term savings from rekeying.
Cost Comparison Between Rekeying and Replacement
The difference in cost between rekeying and replacement depends on the number of locks and the type of hardware. Rekeying is usually the more affordable option because it focuses on the cylinder rather than the whole mechanism. For multiple locks that share the same keyway, the total savings can be substantial.
Replacement, on the other hand, involves both materials and labor. High-quality locks can be more expensive, especially when upgrading to smart or commercial-grade systems. That said, new locks often offer better long-term reliability and added security features. Over time, that can offset the higher upfront cost.
The most efficient way to evaluate both options is to speak with a qualified professional. A licensed locksmith in Calgary can assess the condition of your existing locks and recommend the best approach for your situation.
Security Considerations
Security should always be the deciding factor. Rekeying restores control over who can enter but doesn’t improve the physical strength of the lock. Replacement, however, allows for upgrades that enhance resistance against forced entry, drilling, or bumping.
For residential properties, rekeying is usually sufficient when the goal is to change access quickly. In commercial environments, where traffic is higher and liability is greater, upgrading locks periodically provides an added layer of assurance. Newer locks are built with stronger materials and more advanced keyways, which make unauthorized duplication more difficult.
Another overlooked point is consistency across entry points. If your property has several different locks with mismatched key types, replacement can standardize them, reducing confusion and improving overall management.
Situations That Require Immediate Lock Changes
Certain situations call for immediate action. If your locks are visibly damaged or the key turns roughly, internal parts may already be compromised. Similarly, if you’ve experienced a security breach or lost a master key, replacing the locks removes all uncertainty.
You should also consider replacement when moving into a property with unknown history. Even if the previous owners handed over all keys, there’s no way to know how many copies exist. Rekeying helps, but replacement ensures the hardware itself has not been tampered with.
If your locks are several decades old, replacement is almost always the right call. Older models often lack modern security features like anti-pick pins, drill-resistant plates, or reinforced strikes. These upgrades can make a real difference in delaying intruders and deterring attempts altogether.
Rekeying vs. Replacement for Businesses
Commercial properties face unique challenges. Multiple employees, frequent access changes, and higher security expectations make key management more complex. In many cases, rekeying offers a fast and affordable way to maintain control after staffing changes or tenant turnovers.
However, when a business wants to upgrade security, replacement becomes more practical. Installing electronic locks, keycard systems, or restricted keyways provides more oversight and reduces the risk of unauthorized duplication. These systems can track entry times and improve accountability, which rekeying alone cannot achieve.
The decision also depends on how often your security needs change. Businesses with frequent personnel updates can save money through periodic rekeying. But when your building requires higher-level access control or has sensitive areas, investing in modern locks is worth the cost.
How to Decide What’s Right for You
Start with an honest assessment of your situation. Ask yourself: Are my locks physically sound? Who has access to my property right now? Do I want to improve convenience or upgrade protection?
If your locks are relatively new and in good shape, rekeying is a simple and efficient solution. It keeps your hardware but restores control. If your locks show signs of wear, or if you want added features such as keyless entry or reinforced strike plates, replacement is the better route.
Another practical approach is combining both. For instance, you might rekey secondary doors while replacing the main entry locks with higher-security models. That balance gives you cost efficiency and improved safety where it matters most.
For accurate advice tailored to your property, it helps to consult a professional who can inspect your locks directly. You can contact us to schedule a service or consultation and find out which option makes the most sense for your situation.
Maintenance Tips After Rekeying or Replacement
Whether you rekey or replace your locks, regular maintenance keeps them working properly. Lubricate keyholes with a graphite-based product once or twice a year to prevent buildup and sticking. Avoid using oil-based sprays, which can attract dust and cause jamming over time.
Check strike plates and screws to ensure they stay tight. Even high-quality locks lose effectiveness if the door frame shifts or hardware loosens. For outdoor locks, protect them from direct rain and extreme cold to extend their lifespan.
If you’ve recently rekeyed, label your new keys clearly and store spares securely. For replacements, test every door multiple times before assuming the job is complete. Proper installation and alignment are critical to long-term reliability.
When to Seek Professional Help
DIY lock work can be risky if you’re not familiar with lock mechanisms. Rekeying requires precision tools and experience to avoid damaging pins or cylinders. Replacing locks can seem simple but often involves adjusting door alignment, strike plate depth, and latch spacing.
Professional locksmiths not only perform the task safely but can also identify vulnerabilities you might miss. For instance, a lock may look fine but sit slightly misaligned with the frame, making it easier to force open. A professional ensures your hardware meets modern security standards.
Choosing a local expert helps ensure faster service and better understanding of local building conditions. Weather differences, door materials, and local crime trends can all influence the best solution for your property.
Extra Insight: Think Long-Term About Key Management
One practical insight often overlooked is the long-term management of keys. Whether you rekey or replace, keeping a record of who has keys and where they are stored can prevent future security issues. Many break-ins occur not because locks fail, but because access control is poorly tracked.
Consider keeping a simple key log for both residential and commercial properties. Document key numbers, who has them, and when they were distributed. If a key goes missing, you can decide quickly whether rekeying is necessary instead of wondering later who might still have access.
For large properties or multiple units, master key systems can balance convenience and control. They allow specific keys to open individual doors while a master key accesses all. If your setup already includes such a system, rekeying can maintain it efficiently after personnel changes.
Frequently Asked Questions
1. How often should I rekey my locks?
It depends on your circumstances. Most homeowners do it after moving, losing keys, or changing tenants. For businesses, every staff turnover or major access change is a good time.
2. Can I rekey all locks to use one key?
Yes, as long as the locks share the same keyway. A locksmith can rekey them to match, simplifying key management without replacing the hardware.
3. What should I do after a break-in?
Always replace your locks. Even if they appear intact, internal components could be compromised, reducing resistance to future attacks.
4. Are smart locks worth the upgrade?
For many people, yes. They offer keyless entry, remote control, and better monitoring options. However, quality and proper installation matter just as much as features.
5. Is rekeying as secure as replacing locks?
Rekeying restores control over access but doesn’t improve hardware strength. Replacement can enhance both control and physical protection, especially with newer lock designs.
