When Should You Rekey Instead of Change Locks

Not every lock problem calls for brand-new hardware. In many homes and small businesses, the locks themselves still work perfectly fine—the real concern is simply who might have copies of the keys. Replacing every lock can feel like the safest solution, but it’s often unnecessary and more expensive than it needs to be.

Rekeying is frequently the smarter and more cost-effective option. Instead of swapping out the entire lock, the internal pins are adjusted so old keys no longer work, and new ones are issued. You keep your existing hardware while restoring full control over access.

For property owners in Murray, Utah, knowing when to rekey and when to replace locks can save hundreds of dollars without compromising security. The right choice depends on the condition of your locks and the reason you’re updating them.

What Rekeying Does Compared to Lock Replacement

Rekeying and replacing serve different purposes, even though they both change who can enter your property.

Rekeying modifies the inside of your current lock cylinder. A locksmith rearranges the pins and cuts new keys to match the updated configuration. From the outside, everything looks the same, but previous keys stop working completely.

Changing locks removes the entire hardware set and installs new components. This approach updates both the look and the mechanical parts of the door.

If the hardware is still solid, replacing it doesn’t necessarily add security—it just costs more. That’s why many situations only require rekeying.

Situations Where Rekeying Makes More Sense

Certain scenarios are specifically about access control rather than hardware failure. In these cases, rekeying is usually the practical and budget-friendly solution.

Before deciding to replace anything, consider whether your situation matches one of these common cases:

Moving into a new home

You don’t know how many spare keys exist or who still has copies. Rekeying immediately ensures only your household has access.

Lost or misplaced keys

If a key disappears and you’re unsure where it ended up, rekeying removes the risk without replacing every lock.

Roommate or tenant turnover

When someone moves out, it’s safer to invalidate old keys rather than trust they won’t be reused.

Employee or contractor access

Short-term workers may have been given keys. Rekeying restores control once the job ends.

Combining multiple keys into one

Rekeying can often match several locks to a single key, making everyday use simpler without new hardware.

In each of these cases, the locks are fine. You just need new keys.

Cost Comparison Between Rekeying and Replacing

If price is part of your decision, the difference is usually significant. The table below shows how costs typically compare.

For a home with four or five exterior doors, rekeying might cost under $200 total, while full replacement could easily exceed $600–$1,000.

When the hardware isn’t damaged, rekeying provides the same security for much less money.

When Changing Locks Is the Better Option

Rekeying isn’t always the right answer. Sometimes replacing the hardware is the smarter long-term move. If the lock itself is failing or outdated, modifying the pins won’t fix the underlying issue.

Replacement makes more sense in the situations below:

Worn or sticking locks

If keys are hard to turn or the mechanism jams, the lock may be near the end of its lifespan.

Visible damage or rust

Weather exposure and wear can weaken internal components over time.

Break-in attempts

Forced entry can compromise the lock body or alignment, making replacement safer.

Upgrading security

Switching to higher-grade deadbolts, restricted keys, or smart locks requires new hardware.

Style or door updates

Renovations sometimes call for different finishes or modern hardware designs.

If you’re already planning an upgrade, replacing may be worth the added cost.

How Rekeying Works

Because rekeying is a mechanical process, it follows a straightforward sequence. Understanding the steps shows why it’s faster and cheaper than full replacement.

1. The lock cylinder is removed from the door
2. Internal pins are taken out
3. New pins are inserted to match a new key
4. The lock is reassembled
5. New keys are tested and issued

Most locks take only a few minutes each, which keeps labor time low and minimizes disruption.

Deciding Which Option Fits Your Situation

Choosing between rekeying and replacing usually comes down to one simple question: are you solving an access issue or a hardware issue?

If your locks function smoothly and you just want new keys, rekeying is usually sufficient. If the lock feels unreliable or you want stronger protection, replacement may be the better investment.



A quick inspection by a professional can confirm which path makes sense for your doors.

Conclusion

If your locks are still in good condition, rekeying is almost always the more economical and practical solution. It eliminates old keys, restores security, and avoids the higher cost of replacing hardware that doesn’t actually need to be changed. Replacement only becomes necessary when locks are worn out, damaged, or you’re upgrading to a different system.

For homeowners and small businesses in Murray, working with a dependable local locksmith like Lynn's Lockshop makes it easier to evaluate your locks honestly and choose the option that protects your property without unnecessary expense.