Locksmithing

Rekeying vs Changing a Lock: What’s the Difference and Which Do You Really Need?

January 9, 2026

If you’ve recently moved into a new home, lost a set of keys, or want to improve your security, you may have heard two common terms: rekeying a lock and changing a lock.

While they sound similar, they’re not the same — and choosing the right option could save you time and money while still keeping your home or business secure.

At Premier Locksmiths, we’re often asked:

👉 “Do I need to change my locks, or can they just be rekeyed?”

Here’s a simple breakdown to help you decide.

What Does Rekeying a Lock Mean?

Rekeying a lock involves changing the internal pins of the lock cylinder so that the old keys no longer work. The lock itself stays in place — only the key that opens it changes.

Rekeying is ideal when:

You’ve moved into a new home
You’ve lost a key or don’t know who has copies
A tenant or staff member has moved out
You want all doors to work with one key

Benefits of rekeying:

✅ More affordable than replacing the lock
✅ Quick and efficient
✅ Improves security without changing hardware
✅ No visible change to doors or handles

Rekeying is one of the most popular services we offer because it’s practical, cost-effective, and gives immediate peace of mind.

What Does Changing a Lock Mean?

Changing a lock means removing the existing lock completely and installing a brand-new one. This includes the lock body, cylinder, and often the handle or hardware.

Changing a lock is recommended when:

The lock is damaged, worn, or faulty
You want to upgrade to a high-security lock
You’re switching to a smart lock or access control system
The lock no longer meets your security needs

Benefits of changing a lock:

🔐 Upgraded security level
🔐 New features (anti-pick, anti-bump, smart access)
🔐 Improved durability and performance

If your lock is old, sticky, or easy to force open, replacing it is usually the safer long-term solution.

Rekey or Replace: How to Choose?

Here’s a quick guide:

Situation	Best Option
Moved into a new home	Rekey
Lost keys	Rekey
Lock still in good condition	Rekey
Lock is damaged or outdated	Replace
Want smart or high-security upgrade	Replace
Business with multiple users	Rekey or Master Key System

Not sure? A professional locksmith can assess your locks and recommend the safest option for your specific situation.

What About Businesses and Offices?

For commercial properties, rekeying is often used when staff changes occur, while lock replacement or access control systems are better suited for long-term security management.

At Premier Locksmiths, we also install Master Key Systems, allowing different access levels without replacing every lock — ideal for offices, retail spaces, and complexes.