Lock Rekeying St. Louis
Just moved in, lost a key, or worried someone still has a copy? A1 Express Locksmith provides professional lock rekeying services in St. Louis, MO — we reset every exterior lock to work with brand-new keys while keeping your existing hardware. It is the smartest, most affordable security upgrade most homeowners never think about.
What Rekeying Actually Does
Rekeying changes the internal pins inside your lock cylinder so the old key stops working and a new key operates the lock. The lock hardware stays exactly the same — no new holes, no mismatched finishes, no drilling. Each lock cylinder contains a series of spring-loaded pins of different lengths. When the correct key is inserted, the pins align at the shear line and the cylinder turns. Rekeying replaces those pins with a new combination that matches a new key. A1 Express handles this process with precision — most homes with four to six exterior doors are rekeyed in a single visit, and you walk away with brand-new keys and the peace of mind that old keys are useless.
When to Rekey — The Complete Checklist
You should rekey your locks every time someone who should not have access might still have a key. Moving into a new home — the previous owners, their relatives, their contractors, and their real estate agents all had keys. Losing a key — even if you think you lost it somewhere safe, you cannot be sure. Ending a relationship or a roommate moving out — keys do not always come back. Firing a housekeeper, dog walker, or nanny — professional relationships end, but keys remain. A tenant moving out of your rental property — rekey between every tenant, no exceptions. A contractor finishing work — they were trustworthy, but keys get misplaced on job sites. If any of these apply to you, call our lock rekeying service in St. Louis today.
Keyed Alike — One Key for Every Door
Carrying five different keys for your front door, back door, garage, basement, and side entrance is a daily annoyance. During a rekey, we can key all your exterior locks alike so one key opens every door. It is a small convenience upgrade we include at no extra charge because it simplifies your life and reduces the chance of grabbing the wrong key when you are carrying groceries or rushing inside during bad weather. For rental properties, we can also create a master key system where the landlord's key opens every unit but each tenant's key only opens their own door.
Rekey vs. Replace — Our Honest Recommendation
Not every lock should be rekeyed. If your hardware is quality Schlage, Kwikset, or Baldwin and in good condition, rekeying saves you substantial money and gives you the same security result as replacement. If your locks are builder-grade, corroded, or physically damaged, replacement is the smarter investment. We inspect every lock before recommending either path. If rekeying meets your needs, that is what we recommend — no upsell, no pressure. We would rather earn your trust and your repeat business than make a few extra dollars on a lock replacement you did not actually need.
Lock Rekeying Questions, Answered
How much does rekeying cost?
Rekeying is our most affordable security service. Pricing depends on the number of locks and whether you want them keyed alike. We quote flat-rate pricing upfront before any work begins.
Can you rekey locks from different brands to the same key?
Only if they share the same keyway profile. Schlage-to-Schlage and Kwikset-to-Kwikset work perfectly. Mixed brands usually require replacing one brand to match the other — we explain your options clearly.
How long does a rekey take?
Most homes with four to six exterior doors rekey in forty-five minutes to an hour. Larger homes or properties with many locks may take longer, but we provide time estimates upfront.
Do I need to be home for a rekey?
Yes, or a responsible adult representing the household. We require proof of residency — it is a security measure that protects you as much as it protects us.
Ready for a Locksmith You Will Actually Recommend?
Free quotes. Flat-rate pricing. Lifetime workmanship guarantee. Call A1 Express Locksmith and see why St. Louis homeowners and drivers trust us for every lock and key need.