Rekey Locks or Change Locks: Which One Should You Choose
Liberty Home Guard

Expert-Reviewed Content: Guided by Editorial Standards

Clint Bird

Written By Clint Bird

Published 05/28/25
Home Maintenance

Rekey Locks or Change Locks: Which One Should You Choose?

Key Takeaways:

  • Rekeying updates your existing lock to work with a new key, while replacing the lock involves installing brand-new hardware for a full security reset.
  • You should rekey your locks if you've moved, lost a key, or want one key for multiple doors, but replace them if they’re old, damaged, or you're upgrading to smart features.
  • Rekeying costs range from $10–$25 for DIY kits and $50–$100 per lock professionally, whereas replacing locks can cost $200 or more including labor and new hardware.
  • Liberty Home Guard’s home warranty plans often include locksmith services, covering both rekeying and lock replacement to help you save money and stay secure.

What Is Rekeying?

Rekeying involves changing your lock’s internal components so that a new key can operate it while the lock hardware remains the same. A locksmith or a skilled DIYer adjusts the pins inside the lock cylinder to match a new key.

When to Rekey:

  • After moving into a new home
  • When a key has been lost or stolen
  • To revoke access from previous occupants
  • To unify all home locks to operate with one key

Benefits of Rekeying:

  • Cost-effective No need to buy new locks; only pay for labor and small parts.
  • Quick turnaround Can often be completed in a single visit.
  • Maintains aesthetics Keeps your current lock style and finish.
  • Improved key management Convert multiple keys into a single-key system.

Average Costs:

  • DIY kits: $10–$25
  • Professional locksmith: $50–$100 per lock

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What Does It Mean to Change Locks?

Changing a lock means removing and replacing the old locking hardware with a new one. This process is necessary when the existing lock is damaged or you want to upgrade your home security.

When to Replace:

  • Existing locks are old, rusted, or malfunctioning
  • Aesthetic updates or brand/style mismatches
  • You want to install smart locks or advanced features
  • Rekeying isn’t an option due to incompatible hardware

 

Pros of Changing Locks:

  • Full security reset Complete replacement of hardware
  • Modernization Enables upgrades to smart locks or keypad systems
  • Design flexibility Choose finishes and styles that match your home

Drawbacks:

  • Higher upfront costs for both hardware and labor
  • May require door adjustments or additional hardware

Average Costs:

  • New lock hardware: $40–$200+
  • Installation labor: $75+/hour

 

Rekey vs. Replace: A Quick Comparison

 

Factor

Rekeying

Changing Locks

Cost

Lower

Higher

Time

Faster

Slower

Security Reset

Moderate

Complete

Aesthetic Changes

None

Yes

Smart Lock Option

No

Yes

 

How to Decide

Ask yourself the following:

  • Did you lose a key or move recently? Rekey.
  • Is your current lock old or malfunctioning? Replace.
  • Want one key for all locks? Rekey or install a master key system.
  • Interested in smart features? Replace.
  • On a tight budget? Rekey.

Still unsure? A locksmith can assess your hardware and recommend the best option.

DIY vs. Hiring a Locksmith

  • DIY Rekey Kits Affordable, but require careful attention and compatible hardware.
  • Professional Help More expensive, but saves time and ensures proper security.

How Liberty Home Guard Can Help

Our home warranty plans often include locksmith services, saving money and providing peace of mind. Whether you need rekeying or a full replacement, we can connect you with trusted professionals.

After the Job: Next Steps

  • Test all rekeyed or replaced locks multiple times.
  • Keep at least two backup keys in secure places.
  • Consider scheduling regular lock evaluations.
  • Explore upgrading to smart locks for added convenience.

Final Thoughts

In most cases, rekeying is a smart, cost-effective solution. But when locks are worn, outdated, or you’re craving modern features, changing them entirely is the better route. Evaluate your needs, budget, and future plans—and don’t hesitate to reach out to Liberty Home Guard to explore how our services can support your home’s security.

Need help with your locks? Contact Liberty Home Guard today to learn about locksmith services covered under our home warranty plans.

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