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Rekey vs. Lock Change: Which One is Right for You?

Locksmith rekeying a residential door lock using a pin tumbler kit

If you’re moving into a new home, upgrading your business security, or simply want more control over who has access to your property, you’re probably weighing the pros and cons of rekeying vs. changing your locks.

Understanding the difference between these two options is essential—not just for your safety, but for your budget, too. If you’re in San Diego and unsure which route to take, this guide will walk you through both solutions and help you make the right call.

What Does It Mean to Rekey a Lock?

Rekeying involves changing the internal pins and springs of your existing lock so it works with a new key. The old keys no longer work, but the lock hardware itself stays the same.

When to Rekey:

  • You’ve just moved into a new home or apartment
  • You’ve lost a key and want to eliminate access
  • You want to match all doors to one key
  • You want a lower-cost security upgrade

Benefits of Rekeying:

  • More affordable than full lock replacement
  • Quick service—no need to replace the entire lock
  • Ideal for securing properties with good existing hardware

What Does It Mean to Change a Lock?

Changing a lock means removing the entire lock mechanism and replacing it with a brand-new one. This is often necessary if the lock is damaged, outdated, or you’re upgrading to a more secure system like smart locks.

When to Change Your Locks:

  • Your current locks are old or worn out
  • You want to switch to a different style (e.g., smart lock, keypad)
  • You’ve had a break-in or attempted break-in
  • You’re upgrading to high-security or keyless systems

Benefits of Changing Locks:

  • Full control over your security hardware
  • Access to the latest lock technology
  • Opportunity to improve aesthetic and function

Cost Comparison: Rekey vs. Lock Change in San Diego

Pricing varies depending on the locksmith, type of hardware, and number of locks. But here’s a general idea for San Diego homeowners and renters:

ServiceTypical Cost Range (San Diego)
Rekey (per lock)$20–$60
Change Lock (standard hardware)$80–$150 per lock
Smart lock installation$150–$300+

Pro Tip: If your current locks are in good shape and you’re simply worried about unauthorized access, rekeying is usually the most cost-effective option.

Which Option Is Right for You?

Here’s a quick breakdown to help you decide:

SituationRecommended Action
Moved into a new homeRekey
Lost keys or had them stolenRekey
Break-in or damageChange Locks
Upgrading to smart locksChange Locks
Want one key for all doorsRekey (with keying alike)
Locks are old or rustedChange Locks

Trusted San Diego Locksmiths to Consider

If you’re ready to move forward with rekeying or lock replacement, here are a few well-rated locksmiths to contact:

Final Thoughts

Whether you decide to rekey or change your locks, the most important thing is that you feel secure in your home or business. Rekeying is fast and budget-friendly for most routine security needs, while full lock changes are ideal for bigger upgrades or when damage is involved.

If you’re in San Diego, Z Locksmith is a great resource to handle both services professionally and efficiently.

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