You just got the keys to a new home, a roommate moved out, or a set of keys went missing. Now you are asking a common question: rekey vs change locks, which one do you actually need? Both options stop old keys from working, but they are not the same job. This guide explains the difference in plain terms so you can choose with confidence.
If you would rather talk it through, call Macmanuel Lock & Key Services in Hawthorne, CA at (424) 297-4396.
Rekey vs Change Locks: The Quick Difference
- Rekeying keeps your existing lock on the door. A locksmith changes the small pins inside the lock cylinder so it works with a new key. Old keys no longer turn the lock.
- Changing the locks means removing the old lock hardware and installing a new lock, often a new deadbolt, knob or handle set, or a smart lock.
In short: rekeying changes which key works. Changing the lock changes the lock itself.
How Rekeying Works
Most home door locks use a pin tumbler cylinder. Inside are small pins of different lengths that line up when the correct key is inserted. When a locksmith rekeys a lock, they take the cylinder apart, replace those pins with a new set to match a new key, and put everything back together. The outside of the lock looks exactly the same, but the old keys are now useless.
Rekeying can also let several doors use one key, as long as the locks are compatible. That is handy if you are tired of carrying a different key for the front door, back door and garage entry.
Learn more on our lock rekeying services page.
When Rekeying Makes Sense
- You moved into a new home or apartment. You do not know how many copies of the old key exist, or who has them.
- Keys were lost or stolen. Rekeying makes sure a found key cannot open your door.
- A tenant, roommate or worker no longer needs access. Landlords and property managers often rekey between tenants.
- Your locks are in good shape. If the hardware works well and you like how it looks, there may be no reason to replace it.
- You want one key for several doors. Compatible locks can often be rekeyed to the same key.
When Changing the Locks Is the Better Choice
- The lock is damaged or worn out. A lock that sticks, wobbles or was damaged in a break-in attempt may need replacing, not just rekeying. Sometimes a lock repair is enough, so ask first.
- You want better security. If your current locks are basic or old, a stronger deadbolt can be a worthwhile upgrade.
- You want a different style or finish. Updating door hardware during a remodel is a common reason to change locks.
- You want keyless entry. Switching to a keypad or app-controlled lock means installing new hardware. See our smart lock installation page.
- The lock cannot be rekeyed easily. Some low-quality or unusual locks are not practical to rekey.
Our lock change services page explains how a lock replacement works.
Side-by-Side Comparison
| Question | Rekeying | Changing the locks |
|---|---|---|
| Do old keys stop working? | Yes | Yes |
| Is the lock hardware replaced? | No, it stays on the door | Yes, new hardware is installed |
| Can it fix a broken or worn lock? | No | Yes |
| Can it upgrade security or style? | No, the lock stays the same | Yes |
| Can several doors share one key? | Often, if the locks are compatible | Yes, if the new locks are keyed alike |
What About the Cost?
The price of rekeying or changing locks depends on the job: how many locks you have, the type and brand of lock, whether new hardware is needed, and where you are located. The best way to get an accurate answer is to call (424) 297-4396, describe your doors and locks, and ask for a quote for your situation.
Rekeying or Changing Locks for a Business
Businesses face the same question, often after staff changes or a lost master key. Many offices and shops rekey to control access, while others replace worn commercial hardware or move to a master key system. See our commercial lock rekeying and master key systems pages.
How to Decide in Three Questions
- Do my locks work well? If yes, rekeying is usually enough. If no, consider a repair or a new lock.
- Am I happy with the security and look? If you want an upgrade, change the locks.
- Do I want keyless entry? If yes, a smart lock installation is the way to go.
Still not sure? A locksmith can look at your locks and explain the options before any work starts.
Frequently Asked Questions
Is rekeying as secure as changing the locks?
Rekeying stops old keys from working, so for lost keys or a move-in it solves the main problem. It does not make the lock itself stronger. If you want a tougher lock, changing it is the better option.
Should I rekey after buying a house?
It is a good idea. You do not know who still has copies of the old keys, such as previous owners, contractors or neighbors. Rekeying or changing the locks gives you control over who can get in.
Can all locks be rekeyed?
Most standard pin tumbler locks can be rekeyed. Some locks are difficult or not practical to rekey, and smart locks with keypads work differently. A locksmith can tell you after looking at your lock.
Can I rekey my locks to match one key?
Often yes, if the locks are compatible. A locksmith can check your locks and let you know.
How much does it cost to rekey or change locks?
The price depends on the number and type of locks and whether new hardware is needed. Call (424) 297-4396 for a quote based on your locks.
Do you rekey and change locks near Hawthorne, CA?
Yes. Macmanuel Lock & Key Services is based in Hawthorne and also serves nearby areas, including Gardena and Torrance. Call to confirm availability for your address.
Talk to a Hawthorne Locksmith
Whether you need a quick rekey after moving in or a full lock change, Macmanuel Lock & Key Services can help you choose the right option for your home or business. Call (424) 297-4396 or visit our residential locksmith services page to learn more.