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When to Rekey vs Replace Your Locks

One of the most common questions we get is whether to rekey existing locks or replace them entirely. Here's everything you need to know to make the right decision.

Rekey vs Replace Locks

What's the Difference?

Rekeying means changing the internal pins of your lock so that old keys no longer work and new keys do. The lock hardware stays the same—only the key changes.

Replacing means removing the entire lock and installing a new one with new keys.

When to Rekey Your Locks

Rekeying is usually the better choice when:

  • You just moved into a new home: You don't know who has copies of the old keys
  • You lost your keys: Someone might find them and know your address
  • A roommate or tenant moved out: Especially if the parting wasn't friendly
  • An employee left: Standard security practice
  • Your locks work fine: If they're not worn, damaged, or outdated
  • You want one key for multiple locks: Rekey all to match

Rekeying costs less than replacing because you're keeping the existing hardware. It's quick and effective for security purposes.

When to Replace Your Locks

Replacing is the better choice when:

  • Locks are worn or damaged: Sticky, hard to turn, or visibly damaged
  • Locks are outdated: Old locks may be easier to pick or bypass
  • You want to upgrade security: High-security locks, Grade 1 commercial locks
  • You want smart locks: Keypad, WiFi, or Bluetooth capability
  • Aesthetics matter: New finish, style, or matching hardware
  • After a break-in: Door frame and lock may both be damaged

Cost Comparison

Rekeying typically costs $15-25 per lock, while replacing locks costs $50-200+ per lock depending on quality. For multiple locks, the savings from rekeying add up quickly.

Can All Locks Be Rekeyed?

Most pin tumbler locks can be rekeyed. This includes most residential deadbolts and knob locks. Some locks cannot be rekeyed:

  • Wafer locks (some filing cabinets, cars)
  • Some high-security locks with restricted keyways
  • Severely worn or damaged locks

Our Recommendation

If your locks are in good condition and less than 10 years old, rekeying is usually the smart choice. If they're showing their age or you want enhanced security features, it's time to replace.

Not sure? Call us and we'll give you an honest assessment. We won't try to sell you new locks if rekeying will do the job.