Someone asks about their locks and one of two things usually comes out of the conversation: they’re either paying for something they don’t need, or they’re leaving a security gap by not going far enough.
The confusion between rekeying and replacing locks is completely understandable. Both involve a locksmith. Both end with you having new keys that work on your property. But they’re very different services, and the right choice depends on your specific situation.
Here’s how to think through it.
What Rekeying Actually Does
When a locksmith rekeys a lock, they take the cylinder out of the lock hardware and replace the internal pin configuration. Every pin-tumbler lock has a set of pins inside that are cut to match the grooves of your key. When you insert your key and turn it, the pins align at just the right height to allow the cylinder to rotate. Change the pins, and your old key no longer works. The only key that works now is the new one cut to match the new pin configuration.
The lock body stays exactly the same. The deadbolt, the handle, the strike plate, the finish, all of it stays. Only the internal pins change. This is why rekeying is typically much less expensive than full lock replacement.
What Replacing Locks Does
Lock replacement means removing the old lock hardware entirely and installing something new. This might be the same type of lock in a different finish. It might be a higher-security deadbolt. It might be a smart lock with a keypad. Whatever the new hardware is, the old hardware comes out and the new hardware goes in.
Because you’re paying for new hardware on top of labor, replacement costs more than rekeying in most situations.
When Rekeying Is the Right Call
You just moved into a home. This is one of the most common reasons people rekey, and it’s a smart one. When you buy a house, you have no idea how many copies of the existing keys are floating around. The previous owners might have given keys to a neighbor, a dog walker, a house cleaner, a family member who helped with repairs, or a dozen other people over the years. You’re not being paranoid by wanting those keys to stop working. You’re being practical. Rekeying is fast, affordable, and solves the problem completely.
A tenant moved out. If you rent out a property and a tenant leaves, rekeying before the next person moves in is the responsible thing to do. Even if the tenant returned their keys, you can’t verify that no copies were made.
You lost a key or had one stolen. If only one key is unaccounted for, rekeying makes the missing key useless without having to replace any hardware.
You want to consolidate keys. A locksmith can rekey multiple locks in your home to match a single key. If you currently need three different keys to get through your front door, back door, and garage entry, they can all be rekeyed to work with one key. Less to carry, less to lose.
Your locks are in good condition. If the hardware itself is solid, properly installed, and functioning well, there’s no reason to replace it just to get new keys.
When Replacing Locks Makes More Sense
The lock is old, worn, or failing. Locks that are stiff, slow to turn, or have visible damage aren’t going to get better with rekeying. If the hardware is compromised, the solution is new hardware.
You want to upgrade your security level. Basic builder-grade locks that came with a home often offer minimal protection. If you’re upgrading to a high-security deadbolt, a mortise lock, or an electronic keypad, that’s a replacement job.
The lock was forced or tampered with. A lock that’s been through a break-in attempt or forcible entry is often internally damaged in ways you can’t see from the outside. Replacing it is the safer move.
You’re changing lock types entirely. If you want to go from a traditional keyed lock to a keyless entry system, or from a knob lock to a proper deadbolt, that’s a replacement. You can’t rekey your way into a different type of lock.
The finish is damaged or doesn’t match your other hardware. This sounds like a cosmetic issue, but it matters to a lot of people, especially on exterior doors. If you’re updating your door hardware, doing it all at once keeps things consistent.
What About Master Key Systems?
If you manage a commercial property or have a larger home with multiple entry points, a master key system is worth knowing about. With a master key system, individual locks are keyed so that each has its own unique key, but one master key opens all of them. This is common in apartment buildings, offices, and any property where different people need access to different areas.
Setting up a master key system involves replacing or rekeying locks in a specific way. A locksmith designs the key hierarchy based on your access needs and then cuts and configures the locks accordingly. If this sounds like something your property could use, it’s worth a conversation before assuming you need to completely replace your existing hardware.
How Much Does Each Option Cost?
Rekeying is almost always the more affordable option. The labor is less involved, and there are no hardware costs beyond the new keys themselves. Exact pricing depends on the number of locks and the type of lock, but rekeying a standard residential lock runs significantly less than purchasing and installing new hardware.
Replacement costs vary widely based on what hardware you choose. A basic deadbolt replacement is relatively straightforward. A high-security lock or a smart lock installation involves more materials and, in some cases, more labor if the door needs modification.
At A.L. Odom Locksmiths in Asheville, we can walk through both options with you and give you a clear picture of what each one costs before you decide. There’s no pressure to go in either direction. We’ll tell you honestly what we’d recommend based on your situation.
One More Thing Worth Saying
Some locksmiths push replacement when rekeying would work fine, because replacement generates more revenue. We’d rather you spend what you actually need to spend. If your locks are in good shape and you just need to change who has access, rekeying handles that completely.
If you’re in Asheville or the surrounding Western North Carolina area and you’re trying to figure out which option is right for your home or business, give us a call at (828) 274-6613. We’re glad to help you think it through.