If you have lost a house key, moved into a new home, or started having trouble with an old lock, you may be wondering whether you should rekey the lock or replace it completely.
The two services sound similar, but they solve different problems.
Rekeying changes the inside of your existing lock so old keys stop working. Lock replacement removes the existing hardware and installs a new lock.
Which option is right for you depends on the condition of the lock, your security concerns, and what you want to change.
If you are unsure, a professional Locksmith OKC can inspect your locks and explain which option makes more sense.
Mr Lock provides mobile locksmith service throughout Oklahoma City, OK 73112. Call (405) 978-2060 for help with locks, keys, doors, and other locksmith needs.
What Does It Mean to Rekey a Lock?
Rekeying keeps the existing lock but changes the way it works with a key.
Inside many traditional locks are small pins that match the cuts on your key. During rekeying, the locksmith changes those internal parts so the old key no longer operates the lock.
A new key is then made for the updated lock.
After rekeying:
- Your old keys stop working
- You receive a new working key
- Your existing lock hardware stays in place
- You avoid replacing a lock that is still in good condition
Rekeying is often a practical choice when your main concern is controlling who has access to your property.
What Is Lock Replacement?
Lock replacement is different.
Instead of changing the internal parts, the existing lock is removed and a new one is installed.
This gives you new hardware as well as new keys.
Replacing a lock makes sense when:
- The lock is damaged
- The hardware is worn
- The lock sticks or jams
- The lock was damaged during a break-in
- You want stronger hardware
- You want a different style
- You want to switch to a smart lock
Current locksmith guidance generally treats rekeying as the better option when good hardware only needs new key control, while replacement makes more sense for worn, damaged, or upgraded locks.
When Should You Rekey Your Locks?
There are several situations where rekeying is often enough.
You Just Moved Into a New Home
Moving into a new property is one of the most common reasons to rekey locks.
The previous owner may have returned all known keys, but copies may still exist.
Keys could have been given to:
- Family members
- Contractors
- Neighbors
- Cleaners
- Property managers
- Previous tenants
Rekeying means those older copies will no longer open your doors.
You keep the existing hardware but take control of who has a working key.
You Lost a House Key
If a key goes missing and you do not know where it ended up, rekeying is worth considering.
This is especially important if the missing key could be connected with your address.
You usually do not need brand-new locks if the existing ones are still working correctly.
Changing the internal key configuration makes the missing key useless.
A Tenant or Roommate Moved Out
People move out, relationships change, and rental properties change occupants.
Even if the person returns their key, there is no guarantee another copy was never made.
Rekeying allows you to issue fresh keys without paying for new hardware when the current locks are still in good condition.
You Want One Key for Several Doors
In some homes, you may have one key for the front door and different keys for the back door, side door, and garage entrance.
Compatible locks may be rekeyed so the same key works on several doors.
This reduces the number of keys you need to carry.
A locksmith first needs to check whether the locks use compatible keyways.
When Is Lock Replacement Better?
Rekeying cannot solve every lock problem.
Sometimes the hardware itself needs to go.
The Lock Is Damaged
If a lock has been forced, broken, cracked, or physically damaged, replacing it is usually the better option.
Changing the pins inside a damaged lock does not repair broken hardware.
After a burglary or attempted break-in, have both the lock and door checked.
Damage may also affect:
- Strike plates
- Door frames
- Deadbolts
- Handles
- Hinges
The Lock Is Old and Worn
Locks go through thousands of opening and closing cycles.
Over time, parts wear down.
Warning signs include:
- Keys becoming difficult to turn
- Loose cylinders
- Sticking deadbolts
- Keys working only at certain angles
- Frequent jamming
- Loose handles
If an older lock keeps causing trouble, replacement may make more sense than continuing to repair it.
You Want Better Security
Sometimes nothing is technically wrong with the current lock. You simply want something newer.
You may want to upgrade to:
- A stronger deadbolt
- A keypad lock
- A keyless lock
- A smart lock
- New door hardware
If smart entry interests you, read Smart Lock Installation in Oklahoma City: Cost, Best Options and Security Tips for 2026.
Replacing the hardware gives you more flexibility than rekeying when you want to change how the door locks.
Is Rekeying Cheaper Than Replacing Locks?
Rekeying is often less involved because you keep your existing hardware.
Replacement includes the cost of new hardware as well as installation.
The final price depends on:
- Number of locks
- Lock type
- Hardware condition
- Door condition
- Type of replacement hardware
- Time of service
- Work required
A good locksmith should inspect the situation before recommending one option over the other.
If the lock works properly, replacing it only because you lost a key may mean paying for hardware you did not need.
If you need service outside a normal scheduled visit, you may also want to read Emergency Locksmith vs Scheduled Service in OKC – What’s the Price Difference?.
Can You Rekey a Damaged Lock?
Sometimes minor issues can be repaired before rekeying, but a badly damaged lock is normally better replaced.
Rekeying changes key access. It does not restore broken hardware.
For example, rekeying will not fix:
- A cracked lock body
- A badly worn cylinder
- A broken deadbolt
- Severe corrosion
- Damage from forced entry
This is why an inspection matters.
The problem you notice with the key may only be one part of the issue.
Should You Rekey or Replace Locks After Buying a Home?
If the locks work properly and provide the level of security you want, rekeying is often enough.
If the home has damaged, outdated, mismatched, or unreliable locks, replacement may be more suitable.
In some cases, homeowners choose a mixture.
They may replace weak or damaged locks and rekey the good ones.
That avoids unnecessary replacement while improving the doors that need attention most.
Why Hire a Licensed Locksmith?
Locks protect access to your home, vehicle, or business, so choosing the right person for the job matters.
Mr Lock operates in Oklahoma City under License #AC 441016.
Before hiring any service provider, it is worth checking credentials and asking what work is being recommended.
Read Why Should You Hire a Licensed Locksmith in Oklahoma City? for more information.
Rekeying Is Not Only for House Locks
Many people associate rekeying with residential doors, but locksmith services cover much more.
Mr Lock provides locksmith and door services in Oklahoma City.
Automotive locksmith needs are also common, especially when vehicle keys are lost or electronic keys need attention.
For modern vehicle keys, read Can a Locksmith Program Any Car Key Fob in Oklahoma City?.
You can also see a local example in Ford Fusion 2009 Key Fob Made.
How Do You Decide Between Rekeying and Replacement?
A simple way to think about it is to ask what problem you are trying to solve.
Choose rekeying when:
- The lock works properly
- Your main concern is old keys
- You moved into a new property
- Someone with a key moved out
- You lost a key
- You want compatible locks keyed alike
Consider replacement when:
- The lock is damaged
- The hardware is worn
- The lock repeatedly jams
- You had a break-in
- You want different hardware
- You want a smart or keyless lock
Recent locksmith guidance follows the same general distinction. Rekeying focuses on controlling keys, while replacement addresses hardware condition or security upgrades.
Need a Locksmith in Oklahoma City?
You do not need to guess whether your locks should be rekeyed or replaced.
Mr Lock provides mobile locksmith and door service throughout Oklahoma City, OK 73112.
Mobile service hours are 6 AM to 12 midnight.
Call: (405) 978-2060
Business: Mr Lock
Location: Oklahoma City, OK 73112
License #: AC 441016
Major payment methods are accepted, including:
- Cash
- Visa
- Mastercard
- Discover
- American Express
- Checks
For local Locksmith OKC service, contact Mr Lock and explain what is happening with your lock. The right solution may be a simple rekey, a repair, or a full replacement.
Frequently Asked Questions About Rekeying and Replacing Locks
Is it better to rekey or replace locks?
It depends on the condition of the lock. If the hardware works properly and you only want old keys to stop working, rekeying is usually enough. If the lock is damaged, worn, or outdated, replacement makes more sense.
Does rekeying make old keys useless?
Yes. Once a compatible lock is properly rekeyed, its previous key will no longer operate it.
Should I rekey my locks after moving into a new house?
It is worth considering because you may not know how many copies of the previous keys exist.
Can all locks be rekeyed to use the same key?
Some compatible locks can be keyed alike. Different brands or keyways may not work together, so a locksmith needs to inspect them first.
Is it cheaper to rekey a lock than replace it?
Rekeying is often less expensive because you keep the existing hardware. Pricing still depends on the number and type of locks and the work required.
Should I change my locks if I lose my keys?
If the existing locks are in good condition, rekeying may be enough. If the locks are damaged or already need an upgrade, replacing them may be a better choice.
Can a locksmith rekey a smart lock?
It depends on the smart lock. Some models have a traditional keyed cylinder that may be rekeyable, while others use different access systems.
Do I need to replace locks after a break-in?
If the lock or door hardware was damaged during the break-in, replacement is usually appropriate. Undamaged locks elsewhere on the property may only need rekeying if key access is also a concern.
How long does rekeying take?
The time depends on the lock type, condition, and number of locks. A locksmith can give you a better estimate after inspecting the hardware.
Who should I call for lock rekeying in Oklahoma City?
For Locksmith OKC service, contact Mr Lock at (405) 978-2060. Mobile service is available from 6 AM to 12 midnight throughout Oklahoma City.
