Should You Rekey or Replace the Locks in Your Home?
Home security is something many homeowners don’t think about until a problem arises. Whether you’ve just moved into a new house, lost a key, experienced a break-in, or simply want better protection, your locks play a critical role in keeping your home safe. One of the most common questions homeowners ask is: Should I rekey my locks or replace them entirely?
Both options improve security, but they serve different purposes and come with different costs, benefits, and long-term implications. Understanding the difference can help you make an informed decision that protects your home, your family, and your peace of mind.
At Lock Works Unlimited, we’ve helped Redwood City homeowners make the right choice for decades. Below, we break down everything you need to know to decide whether rekeying or replacing your locks is the best solution for your home.
Why Changing Your Locks Matters—Even If Nothing Seems Wrong
Many homeowners assume that if their locks work, there’s no reason to change them. However, locks don’t just fail mechanically—they also fail through uncontrolled access.
Over time, copies of your house keys may have been shared with:
- Former owners or tenants
- Friends and family members
- Neighbors
- Contractors, cleaners, or service providers
Even if you trust everyone who once had access, you can’t always be certain where those keys ended up. As a result, your home may be less secure than you realize.
Changing or rekeying your locks is one of the simplest and most effective ways to regain control over who can enter your home.
Rekeying vs. Replacing Locks: What’s the Difference?
Although the terms are often used interchangeably, rekeying and replacing locks are two very different services.
What Does It Mean to Rekey a Lock?
Rekeying involves changing the internal components of your existing lock so that old keys no longer work. A locksmith removes the pins and springs inside the lock cylinder and replaces them to match a brand-new key.
The lock hardware stays the same, but access is completely reset.
What Does It Mean to Replace a Lock?
Replacing a lock means removing the old hardware entirely and installing a brand-new lock. This includes the lock cylinder, latch, and often the handle or deadbolt itself.
This option allows you to upgrade the style, security level, or technology of your locks.
Benefits of Rekeying Your Locks
Rekeying is one of the most popular services we provide, especially for homeowners who want fast, affordable security upgrades.
Key Advantages of Rekeying
- Old keys no longer work immediately
- Lower cost than replacing locks
- Keeps existing door hardware intact
- Quick service with minimal disruption
- Ideal after moving into a new home or losing a key
Rekeying is often the best choice if your locks are in good condition and you’re happy with their appearance and functionality.
When Rekeying Makes the Most Sense
- You recently bought a home
- You lost a key or had one stolen
- You want to limit access after a roommate or tenant moves out
- You want one key to work on multiple locks
In addition, during the rekeying process, a professional locksmith can inspect your locks for wear, alignment issues, or installation problems and correct them before they become serious security risks.
Benefits of Replacing Your Locks
While rekeying is cost-effective, replacing locks is sometimes the smarter long-term decision—especially if your locks are outdated or compromised.
Reasons to Replace Your Locks
- Locks are worn, damaged, or malfunctioning
- Hardware is outdated or no longer secure
- You want to upgrade to high-security locks
- You’re interested in smart locks or keyless entry
- You want all locks to match in style and brand
Replacing locks gives you full control over the security level, appearance, and features of your hardware. While it costs more than rekeying, it can significantly improve both safety and convenience.
Rekeying vs. Replacing: Cost Comparison
One of the biggest deciding factors for homeowners is cost.
- Rekeying is typically more affordable because it uses your existing hardware
- Replacing locks costs more due to new hardware and installation
However, cost alone shouldn’t drive your decision. A worn or outdated lock—even if rekeyed—may still be vulnerable to break-ins or mechanical failure. In those cases, replacement is the better investment.
Smart Locks, Accessibility, and Modern Security Options
If your current locks were installed years ago, replacing them opens the door to modern security solutions, including:
- Smart locks with smartphone access
- Keypad locks with custom entry codes
- High-security cylinders resistant to picking and drilling
- Locks designed for accessibility and ease of use
A professional locksmith can recommend solutions tailored to your household, including accommodations for mobility challenges or advanced access control for busy households.
How a Professional Locksmith Helps You Decide
Choosing between rekeying and replacing locks doesn’t have to be overwhelming. A licensed locksmith can evaluate:
- The condition of your existing locks
- Your security concerns
- Your budget
- Your long-term goals
Based on this assessment, they can recommend the most effective and practical solution for your home.
At Lock Works Unlimited, we don’t push unnecessary upgrades. We focus on what actually improves your security.
Contact Our Redwood City Locksmiths Today
If you’re unsure whether rekeying or replacing your locks is right for you, Lock Works Unlimited is here to help. Our experienced Redwood City locksmiths have been serving homeowners and businesses throughout the Peninsula for decades.
We offer 24/7 locksmith services, including:
- Residential lock rekeying and replacement
- Commercial locksmith and security solutions
- Automotive locksmith services
- Safe and vault services
📞 Call (650) 299-9126 to speak with a Redwood Residential locksmith today.
Your security matters—and choosing the right solution starts with expert guidance.