When you move into a new home, lose a spare key, or have a worn-out lock, you might wonder: should you rekey your locks or replace them? Though they seem alike, these options fix different issues and come with different costs, security levels, and benefits.
Homeowners, landlords, and property managers often face this choice. Picking the wrong option can cost you extra money or even put your security at risk. Knowing the difference helps you keep your property safe without overspending.
So, should you rekey or replace your locks?
Rekeying is usually best when your hardware is in good condition, but key control is compromised, while replacing locks makes more sense when the lock itself is damaged, outdated, or no longer secure.
Locksmiths don’t just pick one fix every time. They check the lock’s condition, how the property is used, and if there are other security concerns beyond key control. Below, we explain how each option works and when it’s the better choice.
When Rekeying the Right Choice
What Does Rekeying a Lock Mean?
Rekeying means changing the lock’s internal pins so it works with a new key and old keys no longer work. The lock stays on the door, but access is fully reset. From the outside, nothing looks different, which makes rekeying a discreet security upgrade.
Inside the lock cylinder, small pins are rearranged to match the cuts of a new key. Once this is done, any previous keys, whether they’re lost, copied, or still floating around, are instantly rendered useless. This is why locksmiths often recommend rekeying after a move, tenant turnover, or any situation where key control is uncertain.
Rekeying also allows multiple locks to be matched to a single key, which can simplify access for homeowners and property managers without sacrificing security. While it doesn’t upgrade the strength of the hardware itself, it does restore control over who can enter the property, which is often the primary concern.
When Rekeying Is the Best Option
Rekeying is a good choice when:
● You’ve moved into a new home
● Tenants or roommates have moved out
● A key was lost or stolen
● You want all doors keyed alike for convenience
● The lock is still modern and functioning well
Why Rekeying Is Beneficial
● Lower cost than full replacement
● Faster service
● Keeps existing hardware and door alignment
● Improves key control without changing appearance
How Much Does Rekeying Cost?
Rekeying costs depend on how many locks and keyways you have, but it’s usually one of the most affordable security upgrades, especially for homes or rentals with many doors.
What Does Lock Replacement Mean?
Replacing a lock means taking out the old hardware and putting in a brand-new lockset. This usually includes the cylinder, latch, and often the handle or deadbolt itself. Unlike rekeying, replacement changes both the internal mechanism and the physical components you see and use every day.
This option is often chosen when the existing lock is worn, damaged, or no longer meets current security standards. It also allows homeowners and property managers to upgrade to newer lock designs, improved materials, or additional security features that older hardware simply can’t offer. While it’s a bigger change than rekeying, replacement provides a clean slate for both function and security.
Signs You Should Replace Your Locks Instead
You should usually replace locks if:
● The lock is worn, sticking, or failing
● The hardware is outdated or low-security
● The lock has visible damage or corrosion
● You want to upgrade to high-security or smart locks
● The door or frame has been compromised
Benefits of Replacing Your Locks
● Access to modern security features
● Improved resistance to picking and forced entry
● Better durability and reliability
● Aesthetic upgrades for doors and hardware
Replacing locks is often a long-term investment, especially for places that need strong security or have many new tenants.
Rekeying vs. Replacing Locks: A Quick Comparison
To simplify the decision, here’s how locksmiths typically weigh the two options:
Rekey if:
● The lock works smoothly
● You only need to change who has access
● Budget is a primary concern
Replace if:
● The lock is failing or outdated
● You want stronger security
● The door hardware no longer meets your needs
Changing Locks After Moving: Locksmiths’ Advice
Many people think they have to replace locks after moving. But often, rekeying is enough if the locks are still in good shape.
That said, replacement may be the better option if:
● The home has mismatched or low-quality locks
● The previous owner installed basic builder-grade hardware
● You want to standardize security across all entry points
A locksmith can quickly check your locks and suggest the most affordable option.
Related Questions
Is rekeying locks as secure as replacing them?
Yes, rekeying is just as secure when the lock itself is in good condition and properly rekeyed.
How long does it take to rekey a lock?
Most residential rekeying jobs can be completed in under an hour, depending on the number of locks.
Can all locks be rekeyed?
Most standard locks can be rekeyed, but some older or specialty locks may require replacement.
Do landlords need to rekey after each tenant?
In many areas, rekeying between tenants is considered best practice and sometimes required for liability reasons.
Is replacing locks more expensive than rekeying?
Generally, yes, especially when hardware upgrades are involved.
Picking the Best Option for Your Property
Rekeying and replacing locks both boost security, but they address different issues. Rekeying is a smart, budget-friendly way to control who has access. Replacing locks is best when the hardware can’t protect you anymore. A locksmith’s assessment can save you money while ensuring your doors are properly secured. The right choice isn’t about spending more; it’s about matching the solution to your situation.
First Choice Locksmith Services for Your Home and Business
Action Locksmith Inc. has been helping keep Michigan homes and businesses safe and secure for nearly 40 years. We are a full-service mobile locksmith company available 24/7, so if you have an emergency, we’ll be there.
Our professional locksmiths are trained in residential, automotive, and commercial locksmith services, with the experience, knowledge, and trusted reputation you can count on. Call us today to learn more about how we can help!