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Rekey or Replace Your Locks? How to Decide

Rekey or replace your locks? Here's how a McKinney locksmith decides, what each costs, and the security questions that point you to the right fix.

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Hands using tweezers to set pins in a brass lock cylinder on a workbench, with a key and springs nearby
By Apex Locksmith ProsPublished Updated: 5 min read

Rekey or replace comes down to one question: does the lock itself still work well? Rekeying changes the pins inside the cylinder so old keys stop working while the lock stays on the door, and it's the right call after a move, a lost key or a roommate leaving.

Replacing swaps out the whole lock, which makes sense when the hardware sticks, took damage in a break-in, or when you want a stronger grade or a smart lock. Re-pinning usually costs less because no new hardware is bought. Apex Locksmith Pros rekeys locks on site in McKinney and the surrounding cities from $35+ per cylinder and can set several doors to one key in the same visit; smart lock installation starts from $169+. Use the quick decision guide below to see which service your doors need.

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In this guide (6 sections)

What rekeying means

If you already know you want new keys for locks that work fine, the Rekeying Locks page covers how Apex Locksmith Pros does it on site and the $35+ per cylinder price. Here's what the difference is.

Rekeying changes the inside of your lock so the old keys stop working and a new key takes over. A locksmith pulls the lock cylinder, swaps out the small spring-loaded pins inside, and re-sets them to match a different key. The lock body, the deadbolt, the hardware on your door, all of it stays put. Only the key changes.

The big advantage is speed and price. Nothing gets uninstalled or bought. On a standard Schlage or Kwikset deadbolt, rekeying is quick work once the locksmith is at your door. Because the hardware stays, you can also key several locks to a single new key, so your front door, back door, and garage entry all open with one key instead of three.

Rekeying is the right call far more often than people expect. If the lock works fine and you just need different keys to control who gets in, this is your answer.

What replacing means and when you need it

Replacing means removing the entire lock and installing a new one. You'd do this when the lock itself is the problem, not just who holds the keys.

Replace when the lock is physically failing: the deadbolt sticks or grinds, the key turns hard or catches, the latch doesn't seat in the strike plate, or there's visible rust and wear from years of Texas heat and humidity. Replace after a break-in attempt, where the cylinder or housing may be damaged even if it still turns. Replace when you want a real security upgrade, like moving from a basic builder-grade Kwikset to a higher-grade Schlage, a Medeco, or a Mul-T-Lock with drill resistance and key control. And replace when you're switching to a smart lock or keypad and want to ditch keys altogether.

Replacing costs more because you're buying hardware on top of labor. But for a worn-out or compromised lock, it's the only fix that solves the problem.

A quick decision guide

Run through these questions and the answer usually becomes obvious.

  1. Does the lock work smoothly right now? If yes, lean toward rekey. If it sticks, grinds, or fights you, lean toward replace.
  2. Is this about who has keys, or about the lock's condition? New keys for a new tenant or after a lost key means rekey. A damaged or aging lock means replace.
  3. Do you want a security upgrade? If you want a stronger grade of lock or a smart lock, that's a replacement.
  4. How many doors share a key? If you want one key for several doors and the hardware is decent, rekeying to match is cheap and easy.
  5. Was there a break-in or attempted forced entry? Replace anything that took a hit, and have a locksmith inspect the rest.

If you land on rekey for most questions, you'll save money and time. If condition or upgrades keep coming up, budget for replacement.

Common rekey and replace situations around McKinney

New-home closings drive a lot of calls in McKinney, Frisco, and Allen. When you buy a house, you have no idea how many copies of those keys are floating around with old owners, contractors, cleaners, and neighbors. Rekeying every exterior lock the day you get the keys is the fast, affordable way to lock down your home, and you can set them all to one key while you're at it.

Rentals and roommates are the other big one. A tenant moves out, a roommate leaves on bad terms, or you run a short-term rental in Plano and want fresh keys between guests. Rekeying resets control without the cost of new hardware every turnover.

Then there's wear. A lot of homes around McKinney still have the original builder-grade locks, and after enough hot summers the cylinders get gritty and the keys wear down. When the lock itself is tired, rekeying won't save it, and that's when replacement makes sense.

What each option typically costs

Rekeying is usually the cheaper route because there's no hardware to buy: at Apex Locksmith Pros it starts from $35+ per cylinder. Replacement adds the price of the new lock, and smart lock installation starts from $169+. The full price comparison lives in the quick answer Is It Cheaper to Rekey or Replace Locks?, linked below.

Describe your locks on the call and the dispatcher quotes a flat total before dispatch; the tech confirms the right move on-site from the exact hardware on your door.

What a rekey service visit includes

A rekey visit is shorter and cheaper than most people expect. The tech takes each lock cylinder out of the door, swaps the small pins inside for a new set, and puts it back. The old keys stop working, the new key works, and the lock, handle and finish stay exactly as they were.

We charge from $35+ per lock cylinder, and the dispatcher counts your cylinders on the phone so the total is set before the visit. A typical house has a front door deadbolt and knob, a back or patio door, and a garage entry door; matching them all to one new key is the usual request.

Rekeying works when the locks themselves are in good shape. If a lock is loose, damaged, sticking or you want a different style or a smart lock, replacement is the better call, and the tech tells you which locks fall into that group before doing anything.

Key takeaways

  • Rekeying changes the pins inside the lock so old keys stop working; the hardware stays. It's the cheaper, faster fix when the lock is in good shape.
  • Replace the lock when it's damaged, worn, sticking, hit in a break-in, or when you want a stronger grade or a smart lock.
  • New homeowners should rekey every exterior lock on day one; you never know how many old keys are still out there.
  • Rekeying lets you set several doors to one key, which is handy for new homes and rentals around McKinney and nearby cities.
  • If the lock works and it's only about who holds keys, rekey. If condition or upgrades are the issue, replace.
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Good to know

What Else Do Readers Ask?

Short answers to common follow-up questions on this topic.

For controlling who can get in, yes. Once a lock is rekeyed, every old key stops working, so a lost key or an old tenant's copy is useless. Rekeying doesn't make the lock itself stronger, though. If you want more resistance to drilling or picking, that's a hardware upgrade, which means replacement with a higher-grade lock like a Medeco or Mul-T-Lock.

Usually, as long as they're the same brand and keyway, like all Kwikset or all Schlage. A locksmith can rekey your front, back, and garage entry doors to open with a single key. If your doors mix brands, some may need a cylinder swap to match, which a locksmith can sort out on-site.

Not long. A standard residential deadbolt or knob is quick to rekey, and a typical home with three or four exterior locks is usually finished in a single visit, with the new keys in your hand before the tech leaves. Scheduling is the same day during business hours.

It depends on how many cylinders you have. Apex Locksmith Pros rekeys from $35+ per cylinder in McKinney and nearby cities, so a home is priced by counting its exterior locks, including the garage entry door. The flat total is quoted on the phone before dispatch, with no call-out fee.

Often, yes. A locksmith can pick many standard locks open to remove the cylinder and re-pin it, even when the key is lost. Having a working key makes the job simpler, so mention on the call whether you have one.

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Just moved? We rekey seven locks, you pay for five. Two are on us, and the old keys die that day.

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