When Should You Rekey Your Locks Instead of Replacing Them?
Your locks are one of the most important parts of your property’s security, but many homeowners aren’t sure what to do when they need to improve that security. Should you replace the locks entirely, or is rekeying enough?
The good news is that replacing your locks isn’t always necessary. In many situations, rekeying provides the same level of security at a lower cost while allowing you to keep your existing hardware.
In this guide, we’ll explain the differences between rekeying and replacing locks, the benefits of each option, and how to determine which solution is right for your home or business.
What Is Lock Rekeying?
Lock rekeying is the process of changing the internal pins inside a lock so that the old key no longer works. Instead of installing a brand-new lock, a locksmith modifies the existing lock cylinder and provides you with a new set of keys.
From the outside, the lock looks exactly the same, but only the new keys will operate it.
Rekeying is an excellent option when your locks are still in good condition and you simply want to control who has access to your property.
What Does Lock Replacement Mean?
Replacing a lock involves removing the existing lock and installing a completely new one.
Homeowners often choose lock replacement when:
- The lock is damaged.
- The hardware is worn out.
- They want a different style or finish.
- They’re upgrading to high-security locks.
- They want smart lock technology.
Although replacement costs more than rekeying, it can provide improved security and updated features when older locks are no longer reliable.
Rekeying vs. Replacing: What’s the Difference?
Although both options improve security, they serve different purposes.
Rekeying
- Keeps your current lock.
- Changes the internal key mechanism.
- Old keys stop working.
- Costs less than replacement.
- Faster installation.
Replacing
- Removes the old lock completely.
- Installs brand-new hardware.
- Offers upgraded security options.
- Allows design and finish changes.
- Ideal for damaged or outdated locks.
If your current locks are functioning properly, rekeying is often the more practical choice.
When Should You Rekey Your Locks?
There are several situations where rekeying makes perfect sense.
You Recently Moved Into a New Home
One of the first things every new homeowner should consider is rekeying the locks.
Even if the previous owner handed over every key, you can’t be certain who else may have copies. Contractors, cleaners, neighbors, friends, or previous tenants may still have access.
Rekeying ensures you’re the only person with working keys.
Your Keys Were Lost or Stolen
Losing your keys creates uncertainty.
If someone finds your keys and knows where you live, your property could be at risk.
Instead of waiting and worrying, rekeying your locks immediately restores your peace of mind.
A Roommate or Tenant Has Moved Out
Whether it’s a former roommate or a previous tenant, you may not know if duplicate keys still exist.
Rekeying allows you to secure the property without replacing every lock.
You’ve Given Out Too Many Spare Keys
Over time, spare keys often end up with:
- Friends
- Family members
- Contractors
- House sitters
- Pet sitters
If you’re no longer sure who has access, rekeying is an affordable way to regain complete control.
You Want One Key for Multiple Locks
A locksmith can often rekey compatible locks so they all operate with a single key.
This is especially convenient for homeowners with:
- Front door
- Back door
- Garage entry
- Side entrance
Using one key instead of several makes daily life much easier.
When Should You Replace Your Locks?
Sometimes replacing the lock is the better long-term investment.
The Lock Is Damaged
If the lock sticks, jams frequently, or has visible damage, replacement is usually recommended.
A damaged lock may eventually fail when you need it most.
Your Lock Is Old
Older locks naturally wear down over time.
Replacing aging hardware improves both reliability and overall security.
You Want Better Security
Technology continues to improve.
Modern lock options include:
- High-security deadbolts
- Pick-resistant locks
- Drill-resistant cylinders
- Bump-resistant locks
- Smart locks
- Keyless entry systems
If your goal is stronger protection, replacing outdated locks may be the best choice.
You’re Renovating Your Home
Many homeowners choose to replace locks while updating doors, windows, or exterior finishes.
Installing new hardware provides both improved appearance and enhanced security.
Benefits of Rekeying
Rekeying remains one of the most popular locksmith services because it offers several advantages.
Cost-Effective
Rekeying is generally more affordable than replacing every lock on your property.
Quick Service
Most rekeying jobs can be completed in a short amount of time, making it a convenient option for busy homeowners.
Improved Security
Once the locks are rekeyed, all previous keys become useless, giving you complete control over who can access your property.
Keeps Existing Hardware
If your current locks match your home’s style and function properly, there’s no reason to replace them unnecessarily.
Can Businesses Benefit from Rekeying?
Absolutely.
Commercial properties often rekey locks after:
- Employee turnover
- Office relocation
- Lost office keys
- Tenant changes
- Security upgrades
Businesses can also combine rekeying with master key systems to simplify access while maintaining strong security.
Should You Attempt DIY Rekeying?
Although DIY rekeying kits are available, professional locksmiths have the tools and experience needed to ensure the job is completed correctly.
Improper installation can lead to:
- Locks that no longer function properly
- Keys that stick
- Security issues
- Additional repair costs
Hiring an experienced locksmith helps ensure your locks remain secure and reliable.
Why Choose Sterling Lock & Key?
At Sterling Lock & Key, we help homeowners and businesses throughout Philadelphia protect their properties with dependable locksmith services.
Our experienced technicians provide:
- Lock rekeying
- Lock replacement
- Lock installation
- Residential locksmith services
- Commercial locksmith solutions
- Emergency lockout assistance
- Smart lock installation
- Car key replacement
We take pride in delivering professional workmanship, honest service, and security solutions tailored to your needs.
Frequently Asked Questions
Is rekeying cheaper than replacing locks?
Yes. Since the existing lock hardware remains in place, rekeying is usually less expensive than installing entirely new locks.
Can all locks be rekeyed?
Most standard locks can be rekeyed, provided they’re in good condition and compatible with the process.
How long does lock rekeying take?
Many rekeying services can be completed in under an hour, depending on the number of locks involved.
Will my old keys still work?
No. Once a lock has been rekeyed, the previous keys will no longer operate it.
Can multiple locks use the same key?
In many cases, yes. A locksmith can often rekey compatible locks so they work with a single key for added convenience.