You just bought a house in Knoxville. The seller handed you a set of keys. But how many other copies are out there? The previous owners, a neighbor who watered the plants, a contractor, a cleaning service? You have no way of knowing.
This is the situation lock rekeying was made for. It’s one of the simplest and most affordable ways to improve your home or business security, and a lot of people have never heard of it.
At Keyhub Locksmith in Knoxville, TN, we get asked about this all the time. Here’s a plain-English guide to what rekeying is, how it works, and when it makes sense.
What Is Lock Rekeying?
Lock rekeying means changing the inside of your lock so that your old keys no longer work and a new key does. The lock itself stays on the door. Only the internal parts change.
Here’s the quick version of how it works. Most household locks are pin tumbler locks. Inside the lock cylinder are small spring-loaded pins of different lengths. When the right key goes in, its cuts lift each pin to exactly the right height, and the cylinder turns. A different key won’t line them up, so the lock stays shut.
During rekeying, a locksmith removes the cylinder, swaps in new pins sized for a new key, and reassembles it. Your old key can still slide into the lock, but it won’t turn it anymore.
Rekeying vs. Replacing: What’s the Difference?
People often use these terms interchangeably, but they’re different jobs.
| Rekeying | Replacing | |
|---|---|---|
| What changes | Internal pins only | The entire lock |
| Old keys | Stop working | Stop working |
| Hardware | Stays the same | New hardware installed |
| Typical cost | Usually lower | Usually higher |
| Best for | Lost keys, new homes, key control | Broken, worn, or outdated locks |
| Matching keys | Easy to key multiple locks alike | Depends on the new locks |
The short rule: if your lock works fine and looks fine, rekeying is usually the better value. If the lock is damaged, loose, rusted, or low quality, replacing it makes more sense.
When Should You Rekey Your Locks?
1. After moving into a new home
This is the number one reason. You can’t know who has copies of the existing keys, including previous owners, relatives, real estate agents, or former tenants. Rekeying all exterior doors gives you a fresh start without the cost of new hardware.
2. After losing your keys
If your keys are missing and you don’t know where, rekeying is a smart, calm response. Even if you think they fell out in your own driveway, you can’t be sure nobody picked them up.
3. After a breakup, divorce, or roommate change
When someone who had a key no longer lives with you, rekeying removes that access cleanly and quietly. No awkward conversations about “did you return everything?”
4. After a break-in or attempted break-in
If someone got in with a key or you suspect they might have copied one, rekeying helps close that gap. If the lock or door was physically damaged, ask a locksmith to inspect it, because you may need repairs or replacement as well.
5. After an employee leaves (for businesses)
Businesses in Knoxville often rekey after staff turnover, especially when former employees had keys to the front door, back office, or storage rooms. It’s much cheaper than worrying about who might still have access.
6. When you want one key for every door
Tired of carrying a ring full of keys? A locksmith can rekey several locks to work with the same key, so your front door, back door, and garage entry all use one.
7. After a landlord or tenant change
Landlords commonly rekey between tenants as part of turnover. It’s a quick, inexpensive way to make sure the next resident is the only one with access.
8. As routine security upkeep
If you’ve never rekeyed your locks and have lived somewhere for many years, it’s reasonable to do it once in a while, especially if you’ve shared keys with friends, family, or service providers over time.
When Rekeying Is Not the Right Choice
A good locksmith will tell you when something else is the better option. Rekeying isn’t ideal if:
- The lock is physically damaged, loose, or hard to turn even with the right key
- The lock is old or poor quality and no longer offers meaningful security
- You want to upgrade to a smart lock, a higher-security deadbolt, or a different style
- The lock is a type that can’t be rekeyed, which includes some very cheap or specialty locks
In those cases, replacement or repair is the smarter use of your money.
What Happens During a Rekeying Appointment?
It’s a quick and straightforward service. Here’s what typically happens:
- You tell the locksmith which locks to rekey (front door, back door, garage entry, shed, and so on).
- The locksmith removes each cylinder and takes out the old pins.
- New pins are installed to match the new key.
- The lock is reassembled and tested.
- You receive your new keys, and the old ones no longer operate the lock.
For a typical home, the work is often done in a short visit. Timing depends on how many locks you have and what brands they are.
How Much Does Rekeying Cost in Knoxville?
Pricing depends on how many locks you’re rekeying, the lock brand and type, the number of keys you want, and whether it’s a standard residential job or a commercial one. Rather than quote a number that may not match your situation, we recommend getting a quote based on your actual locks. Call Keyhub Locksmith with your lock count and location, and we’ll give you straightforward pricing before any work begins.
In general, rekeying costs less than replacing every lock, and the savings grow with each door.
Why Hire a Professional Locksmith?
You can buy DIY rekey kits, and some handy homeowners use them successfully. But a professional helps in several ways:
- Correct, reliable results. A mistake in pin sizing can leave a lock sticking or not working properly.
- Brand knowledge. Different manufacturers have different cylinder designs.
- Spotting problems. A locksmith can notice worn latches, weak strike plates, or poorly installed deadbolts that would otherwise go unnoticed.
- Time saved. What takes a locksmith a short visit can take a beginner an afternoon.
Locksmith Services in Knoxville, TN
Keyhub Locksmith serves homeowners, renters, landlords, and businesses in Knoxville and the surrounding area. Whether you’ve just closed on a house in a neighborhood like Bearden, Fountain City, or South Knoxville, or you manage a rental or storefront, we can help you rekey with confidence. Contact us to confirm your service area and availability.
Frequently Asked Questions
What does it mean to rekey a lock?
Rekeying means changing the internal pins of a lock so it works with a new key and your old keys stop working. The lock hardware stays on your door.
Is rekeying the same as changing locks?
No. Rekeying changes only the inside of the existing lock. Changing, or replacing, means installing an entirely new lock.
Is rekeying cheaper than replacing locks?
Usually, yes, especially when you have several locks. Exact pricing depends on your lock types and how many you need done.
Do I need to rekey after buying a house?
It’s strongly recommended. You can’t know how many copies of the old keys exist, so rekeying is a simple way to make sure only you have access.
How long does rekeying take?
Each lock typically takes a short time, and many homes can be done in a single visit. Larger or commercial jobs may take longer.
Can all locks be rekeyed?
Most standard pin tumbler locks can be. Some very inexpensive or specialty locks cannot, and a locksmith can tell you quickly.
Can you rekey all my locks to use the same key?
In most cases, yes, as long as the locks are compatible. It’s a popular request and can simplify your key ring.
Will my old key still work after rekeying?
No. Once a lock is rekeyed, the old key will not turn it.
Final Thoughts
Rekeying is one of the most cost-effective security steps you can take. It takes little time, doesn’t require new hardware, and gives you something valuable: confidence about who can get into your home or business.
If you’ve moved, lost a key, had a change in who lives or works with you, or just can’t remember who has copies, it’s worth doing.
Need your locks rekeyed in Knoxville? Contact Keyhub Locksmith today. Tell us how many locks you have and what you’re dealing with, and we’ll give you a clear quote and a quick, professional fix.