Lost Your Keys? When Rekeying Beats Replacing the Lock

When a locksmith rekeys a lock, the cylinder — the core that the key slides into — is opened and the small internal pins are rearranged or swapped out. Once the new pin configuration is set, only a freshly cut key will operate the lock. The lock body itself, the hardware you see on the door, stays exactly where it is. On a standard door knob lock (technically called a cylindrical latch lock), a mortise lock, or a deadbolt, rekeying typically takes a skilled locksmith under 30 minutes per lock. No drilling, no patching, no repainting. The door knob lock part — properly called the plug or cylinder — is what gets reconfigured, not the entire assembly.

Replacing a lock, by contrast, means removing the entire hardware unit and installing new components. That makes sense when the lock is damaged, corroded, past its useful life, or when you are upgrading security. But when the lock is in good working order and the only problem is that someone else might have a copy of your key, rekeying accomplishes everything a full replacement does — at a fraction of the disruption. Think of it this way: you would not replace your car's ignition housing just because your valet key ended up in the wrong hands. You would have a professional rekey or reprogram the system.

Lost keys are the clearest case for rekeying. If you cannot confirm that your keys were simply misplaced somewhere safe — a drawer at a family member's home, the office break room — you should treat them as compromised. Anyone who picks them up knows they belong to a house or car, and if there is any ID or address information on your keychain, your home is potentially at risk. Calling an emergency locksmith to rekey the affected locks the same day is the fastest path back to peace of mind. Our mobile team can be dispatched to your address in Salt Lake County within the hour in most cases, and we carry the pin kits and blank keys for the most common residential cylinders, including Schlage and Kwikset, right on the van.

Rekeying also solves a problem renters often overlook. If you are a tenant and you are wondering 'can I change the lock on my apartment?' — the honest answer is that you usually cannot swap hardware without landlord approval, but most leases do allow rekeying because the lock body stays intact and the landlord can receive a new key copy. Always communicate with your property manager first, but a rekey is almost always easier to get approved than a full hardware swap. If you just moved into a new rental anywhere in the Salt Lake Valley and are not sure how many copies of the original key are floating around from previous tenants, a rekey is one of the highest-value security steps you can take for the cost involved.

There are real scenarios where rekeying is not enough and you do need to change the lock or upgrade the hardware entirely. A mortise lock with a cracked chassis, a door knob lock that spins freely because the internal mechanism is worn, a sliding glass door lock with a broken latch — these need hardware replacement, not just a rekey. Speaking of sliding glass doors: if you are asking how to change the lock on a sliding glass door, the process is more involved than a standard knob or deadbolt swap because the lock is integrated into the door frame track. A professional with the right tools and parts will measure the existing lock pocket, source a compatible replacement (sizes and mounting hole patterns vary widely by door brand and age), and fit it without compromising the door's weather seal or structural integrity.

Upgrading security is another legitimate reason to change the lock. If your current deadbolt is a basic Grade 3 cylinder and you want to move up to a high-security mortise lock — a type of lock set into a deep rectangular pocket in the door edge, commonly found in commercial buildings but increasingly popular for residential front doors — then replacement and installation are necessary. A mortise lock offers a more robust bolt throw, better resistance to kick-in attacks, and a refined look. Our commercial locksmith team installs and services mortise lock hardware on everything from single-family homes on 2100 South to multi-tenant office buildings in downtown Salt Lake City, so if you are considering an upgrade, we can assess your current door prep and recommend compatible hardware on the spot.

One of the most common questions we hear is 'how much is the average locksmith charge?' and the honest answer is that it depends on several specific factors: the type of lock involved (a basic cylindrical door knob lock costs less to rekey than a high-security mortise lock), the number of locks being serviced, the time of day (emergency locksmith calls in the early morning hours carry different rates than a scheduled mid-afternoon appointment), travel distance within Salt Lake County, and whether any parts — new cylinders, replacement keys, upgraded hardware — are needed. What we can promise is this: before any work begins, we will give you an exact price and get your approval. No invoice surprises, no fees added after the job.

The same principle applies to vehicle work. Can a locksmith reprogram my key fob? Yes — and our mobile team handles key fob programming and transponder key cutting across Salt Lake County. The cost factors include the vehicle's make, model, and year, and whether the original key is available to use as a reference. Some modern vehicles require dealer-level equipment for full programming, and if that is the case, we will tell you upfront so you can make an informed decision. We would rather be straight with you about scope than overpromise. Call us any time at (704) 850-6756 and we will walk through your specific situation and give you a clear picture of what is involved before we roll.

How do I know if a locksmith is legit? It is a fair question, especially after lost or stolen keys when you are stressed and moving fast. A trustworthy locksmith will always ask to verify your ownership or residency before beginning any work — that is standard professional practice, not an inconvenience. They will arrive in a marked vehicle, provide a written or clearly stated price before starting, and never pressure you into services you did not ask for. Our team carries identification and will verify your identity against the property address before any lock is touched. We are insured, experienced, and have been serving Salt Lake County residents and businesses from our mobile units for years.

Our services span a wide range of needs beyond simple rekeying. We handle residential lockouts, car lockouts, broken key extraction, new lock installation, mortise lock service and installation, door knob lock replacement, deadbolt upgrades, master key system setup, high-security lock installation, sliding glass door lock replacement, garage side door lock service, padlock removal, cabinet lock installation, mailbox lock replacement, key duplication, transponder key cutting, key fob programming, ignition repair, access control installation, commercial door hardware, panic bar installation, file cabinet lock service, safe opening, safe combination changes, and intercom system lock integration. Whether you are a homeowner in Cottonwood Heights dealing with a lockout on a Sunday night or a property manager on State Street needing a master rekey after a tenant change, our 24/7 mobile dispatch is ready. Call (704) 850-6756 any time — we answer on the first ring and can usually give you an honest ETA before you hang up.

Searching 'how to change the lock on a door' or 'how to change the lock code on a door' will pull up plenty of tutorials, and for a tech-savvy homeowner with a basic deadbolt and a screwdriver, swapping a cylindrical lock is genuinely doable. So is updating the code on a programmable electronic lock — most smart lock apps walk you through it in under five minutes. We are not here to talk you out of a task you can safely handle yourself. But there are real limits: changing the lock on a sliding glass door (can you change the lock on a sliding glass door without the right replacement part?), working on a mortise lock, extracting a broken key from a cylinder, or programming a transponder key all require specialized tools and training that make professional help the practical choice. If you try a DIY repair and run into trouble, do not force it — a damaged cylinder or a lock frozen mid-installation is a more expensive fix than calling us from the start. We are available around the clock and happy to give free phone guidance on whether your situation calls for a professional or not.

How long does it usually take for a locksmith to come? In Salt Lake County, our average response window for emergency calls is typically under an hour depending on time of day and your specific neighborhood — our mobile units run throughout the valley including West Valley City, Sandy, South Jordan, Draper, and Murray. When we arrive, the first step is always ownership verification. For a home, that means a photo ID matching the address; for a vehicle, registration or title. Once confirmed, a rekey job on one or two standard locks usually wraps up in 30 to 45 minutes. A mortise lock installation or a sliding glass door hardware swap takes longer because of the door prep work involved, and we will give you an accurate time estimate along with your price quote before starting. No guesswork on your end.

Salt Lake County is 743 square miles of neighborhoods, and we cover all of it from a fleet of fully stocked mobile units. Whether you are locked out near the State Capitol, dealing with a busted door knob lock in a Holladay condo, or need an emergency locksmith after losing your keys at the Snowbird parking lot, we can reach you. The Wasatch Front winters add an extra wrinkle — frozen lock cylinders and ice-damaged door hardware are real calls we get from November through March, and our vans carry the right lubricants and tools for cold-weather service. If you are a business on Redwood Road or a property manager overseeing units near the Jordan River Parkway trail, our commercial locksmith services are available on the same 24/7 schedule as our residential work. SOS mobile locksmith coverage means no matter where in Salt Lake County you are stranded or secured-out, help is one call away. Reach us any time at (704) 850-6756 and our dispatch will get someone moving toward you immediately.