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Rekeying Locks in St Charles, MO Done Right

Moved in, lost a key, or just worried about who still has one? Rekeying locks gives you new control fast.

Call Now (636) 757-5515 Schedule Service
18 Years Serving St Charles 4.4 Stars · 163 Reviews Licensed & Insured Locksmiths
Warning Signs

When You Need Rekeying Locks in St Charles

Most calls we get come after a move, a breakup, or a lost key that never turned up. Rekeying swaps the inner pins of your existing lock so old keys stop working, without replacing the whole hardware.[1] We see a lot of this in spring when homes in New Town and Cottleville-adjacent neighborhoods change hands. Landlords also call us between tenants to protect the next renter. If you bought a house in the historic Frenchtown district, odds are the original hardware has seen many owners. You'd probably be surprised how many. Don't wait until something feels off. A stranger with an old key is a risk you don't need.

Fast
Most rekeys finish in under an hour, often while you wait.
100%
Old keys stop working the moment we finish the job.
24/7
We answer emergency calls day or night, any day of the week.
Common Jobs

New Homeowners

You never know how many keys the last owner handed out. We rekey every exterior lock to match one new key.

Lost or Stolen Keys

A missing key means someone out there could open your door. We fix that in one visit.

Ending a Lease or Tenancy

Landlords across St Charles County call us between renters to protect the next person moving in.

Divorce or Roommate Changes

When a household splits up, rekeying is the fastest way to make sure only current residents have access.

Historic Hardware Upgrades

Frenchtown homes with original mortise locks need careful rekeying that respects the old hardware, not a cheap replacement.

Builder-Grade Cylinder Failure

Newer subdivisions like Beau Chateau often have cheap cylinders that wear out in five to seven years.

Trust

Why St Charles Homeowners Trust Our Rekeying Work

A lock that still answers to an old key is a problem that gets worse the longer it sits. We've rekeyed homes all over St Charles County for over 25 years. We show up fast, work clean, and explain exactly what we're doing before we touch your door.

What To Expect

✓ A licensed, insured locksmith arrives on time, ready to work.
✓ We check every exterior door, the one you called about.
✓ You get one new key that works on every rekeyed lock.
✓ We give you a clear price before we start, no surprises after.
Get Started

Protect Your Home Today

Don't let an old key stay in circulation one more day. Call our Locksmith team now and we'll get your rekeying handled fast.

Call Now (636) 757-5515
Simple Steps

How Our Rekeying Process Works

Rekeying is quicker and less messy than most people expect.

1

Call and Describe the Job

Tell us how many doors need rekeying and where you're located. We'll give you a time window, often same day.

2

We Rekey On Site

Our locksmith opens each lock cylinder and swaps the pins to match one new key. Most homes take under an hour.

3

Test and Hand Over Keys

We test every lock in front of you before we leave. You get fresh keys and the old ones stop working right away.

Fair Pricing

Rekeying Locks Cost in St Charles

Price depends on how many locks you need done and the type of hardware involved. A standard Kwikset or Schlage deadbolt costs less in newer Bogey Hills subdivision homes. Restoring an original mortise lock in a Frenchtown historic property costs more. Rekeying resets the internal pins to match a new key. It's almost always cheaper than full lock replacement.[1] We quote the job before we start. You'll know the price upfront.

✓ You get an upfront price before any work begins.
✓ No hidden fees added once we're already at your door.
✓ Senior and military discounts apply to most rekeying jobs.
Typical price range
$60 - $250
The number of locks you need rekeyed changes the total cost.
Historic or antique hardware takes more time and skill than builder-grade locks.
High-security cylinders cost more to rekey than standard residential locks.
After-hours or emergency calls carry a small added fee.
Reviews

What Our Customers Say

Review by Ian Brown

I
Ian Brown
25 days ago

I had a great experience at ASAP Lock & Key! Collin was incredibly friendly and helpful. He helped me replace the shell on my car key, cut it for me, and even walked outside with me to make sure everything worked properly before I left.

I really appreciated the extra effort and attention to detail. He could have simply handed me the key and sent me on my way, but he took the time to make sure everything was working and that I was taken care of. That kind of customer service really stands out. Thank you, Collin, for the great service!

Review by Thomas Dell

T
Thomas Dell
1 month ago

I have used this company twice. Once to get a key cut for a CanAm Spyder the second time to get a round key made for a small trailer you pull behind a motorcycle. Both times the staff went over and above to take care of me. Both times they were slightly unusual situations. Excellent customer service and reasonable prices. I will be using this company every time I need locksmith services, even though there are closer ones to my house. Thanks guys!

Review by Eri

E
Eri
2 months ago

Got locked out recently and these guys were indeed ASAP. Thanks so much gentleman! Love these guys.

Review by Sharon Hekman

S
Sharon Hekman
2 months ago

I locked myself out of our new house this morning and after talking with questionable mobile service locksmiths, I found ASAP and called and was very happy that someone could come right out to get me in. He was friendly and professional! We bought the house without any keys so he offered to re-key the doors for us, which was exactly what we needed! I would highly recommend them! You can trust them!

Review by Tom Askew

T
Tom Askew
2 months ago

Outstanding experience. My son locked his keys in his golf bag and hustled over and helped out within 15 minutes. They were extremely helpful and reasonably priced. I highly recommend them.

Review by bev lewis

B
bev lewis
2 months ago

Courteous, kind, and honest

Review by Trena Arredondo

T
Trena Arredondo
3 months ago

Wonderful customer service

Review by Alyssa Pavlacic

A
Alyssa Pavlacic
4 months ago

Frank was very helpful and fast with the service. I would definitely recommend.

Review by Mike Lowell

M
Mike Lowell
5 months ago

Professional, fast, friendly.

Questions

Rekeying Locks Questions

Here are the questions St Charles homeowners ask us most about rekeying.

  • How much does rekeying locks cost in St Charles?

    Most single-lock jobs run between $60 and $120, with whole-house jobs landing higher depending on door count. Historic hardware in Frenchtown costs more due to its age. We always quote the price before starting.

  • How long does rekeying take?

    A single lock usually takes 15 to 20 minutes. A full home with four or five exterior doors typically finishes in under an hour. We test every lock before we leave.

  • Can I rekey a lock myself?

    You can buy a rekeying kit, but it's easy to damage the pins or misalign the cylinder. We've seen DIY jobs that locked homeowners out entirely. A professional rekey takes less time and avoids that risk.

  • Is rekeying better than replacing the whole lock?

    Rekeying costs less and keeps your existing hardware, which matters for historic doors in the Main Street area. Replacement makes more sense if the lock itself is worn out or damaged. We'll tell you honestly which one your door needs.

  • How fast can you get someone out after a lost key?

    We treat lost keys as urgent and can usually get to you the same day. During ice storm season, calls spike and we prioritize lockout risks first. Call us and we'll give you a real time window.

  • What are signs my locks need rekeying?

    A sticky or hard-turning deadbolt, a recent move, or an ex-tenant with a key are all signs. Humidity near the river confluence also swells doors and misaligns locks, which can mimic a rekeying issue. We check both the lock and the frame when we visit.

  • Do you rekey smart locks too?

    Yes, we rekey and service smart locks common in New Town at St. Charles, including HOA-approved models. Smart locks still use a physical cylinder in most cases, so rekeying works the same way. We'll check your HOA's hardware rules if you're unsure.