Non-destructive entry first, always - and we re-key Schlage, Kwikset, and Baldwin locks on the spot while you watch
You get a price before we start. It does not change when we arrive. No surprises.
Trusted Change Door Locks Nationwide
Changing your door locks typically costs $85 to $210 for a standard knob or deadbolt, including the hardware and labor, and most jobs are completed the same day. If your keys were lost, a roommate moved out, or you just closed on a house, changing the locks shuts down every old key in circulation. Call Dunmore Locksmith at (910) 714-4287 and a live person answers, any hour, every day of the year.
We’ve been handling lock changes since 2007 as part of the Threshold Group family of independent local locksmith businesses. Every technician who comes to your door is background-checked, identity-verified, and sent to you by name and photo before the visit. You see exactly who to expect before you turn the handle. That matters when the whole point of the job is keeping the wrong people out.
Key Takeaways
- Standard door lock changes run $85 to $210 including hardware and labor
- Same-day service is available across the United States
- Every technician is background-checked and identified by name and photo before arrival
- Written price before any work starts, with no after-the-fact totals
- 365-Day Done Right Promise on every repair and installation
Patio Door Lock Change
A Patio Door Lock Change replaces the hardware on sliding glass, French, or garden doors, typically costing $95 to $240 depending on the lock type and whether the existing mounting holes need to be modified. Sliding patio doors often ship with flimsy latch hardware that a determined intruder can bypass in seconds with a screwdriver, which is why we replace them with reinforced mortise locks or surface-mounted bolt locks. Dunmore Locksmith technicians carry a range of patio door hardware so the swap usually happens in a single visit.
Weak Latch Hardware on Sliding Glass
Most factory patio door latches are cast metal, and the hook that catches the frame is often shorter than it looks. We regularly replace these with keyed locks or add a secondary patio bolt at floor level for real resistance.
When the Patio Door Frame Has Been Forced
If someone pried the door or the frame is split where the old lock sat, we reinforce the area with a metal wrap plate before mounting the new hardware. Skipping that step means the fresh lock sits in a damaged frame and fails the first time someone leans on it.
Door Lock Change
A Door Lock Change is the removal of your existing knob, lever, or deadbolt and the installation of new hardware, with complete jobs typically running $85 to $210 per door. You need this when the lock itself is worn out, damaged, or you want upgraded security rather than just new keys for the old mechanism-check our Change Door Locks Troubleshooting: Common Problems and How to Fix Them if you are unsure which issue you have. Dunmore Locksmith brings factory-fresh hardware in the truck, installs it to manufacturer spec, and tests the strike plate alignment before we leave.
Upgrading From a Knob to a Deadbolt
Many older homes have only a locking knob, which a hammer blow or a pipe wrench can defeat in under a minute. We replace those with a reinforced deadbolt and a passage knob, which gives you real security on the actual locking point.
New Homeowners Who Inherited Unknown Keys
Closing day is the wrong time to wonder how many copies of the front door key exist. A full door lock change gives you brand-new hardware and a fresh key set that starts with exactly the copies you choose to make, as outlined in our Change Door Locks Maintenance Schedule: What to Do and When.
Lock Change
A Lock Change is the broader term for replacing any locking device on a door, gate, or cabinet, with typical residential jobs landing between $85 and $175 for standard hardware and $200 to $450 for high-security or commercial-grade locks. Sometimes you want the same brand, same footprint, just new internals; other times the old lock is so obsolete that replacement is the only honest option. Dunmore Locksmith gives you a written price before any work begins, and that is the price on the invoice.
After a Break-In or Attempted Entry
A lock that survived an attack may still be compromised internally, with bent pins or a damaged cylinder that will fail later. We replace rather than patch after forced entry so you are not betting your safety on damaged hardware.
When a Key Snaps Off Inside the Lock
Broken key extractions sometimes leave the cylinder scored or the pin chamber out of alignment. We can extract the fragment, but we will tell you plainly if the lock should be replaced instead of saving a cylinder that is already damaged.
Change Lock Cylinder
A Change Lock Cylinder replaces the core where the key inserts, without removing or replacing the entire lock body, usually running $65 to $140 per cylinder including labor. This is the right call when the lock assembly is still in good shape but the key is lost, or you want to join multiple doors onto one key without buying all-new hardware. Dunmore Locksmith keeps common cylinders in stock for Schlage, Kwikset, Yale, and Baldwin, so most cylinder changes are done in about an hour.
Lost Keys Without Full Lock Replacement
If the lock is structurally fine, changing the cylinder gives you a brand-new key that the old keys will not turn. It is faster and cheaper than a full lock change while delivering the same security result.
Keyed-Alike for a Smoother Keyring
When you want the front door, back door, and garage entry all on one key, we swap the cylinders and pin them to match. That means fewer keys on your ring and no more fumbling in the dark.
Door Lock Installation
A Door Lock Installation puts brand-new hardware on a door that either has no lock or needs completely different prep work, with typical prices ranging from $90 to $250 depending on the door material and the hardware chosen. This applies to new doors, retrofitting old doors to accept modern deadbolts, or adding a second lock to a door that only has one. Dunmore Locksmith bores, mortises, and aligns the new hardware to manufacturer tolerance, not to whatever the old drill holes allowed.
Adding a Deadbolt to a Door That Never Had One
Many garage-entry doors and back doors were built with only a knob latch. We bore the door and frame for a full deadbolt, which is the single biggest security upgrade most homes can make for under $250.
Replacing Mismatched or Builder-Grade Hardware
Track builders often install the cheapest locks that meet code, and after a few years the keyway is sloppy and the finish is peeling. We swap those out for properly graded hardware that will still turn smoothly a decade from now.
Brands We Service
Our technicians are factory-authorized to install and service Medeco high-security cylinders, and we stock the brand’s OEM pins, springs, and tailpieces for both residential and commercial keyways. Medeco locks are built with hardened steel inserts and angled cuts that resist picking and unauthorized key duplication, and installing them correctly requires training that most general locksmiths do not have.
We also work extensively with Baldwin and Mul-T-Lock hardware. Baldwin’s mortise locks and full-plate entry sets need careful alignment to keep the heavy brass working smoothly, and we handle that regularly. Mul-T-Lock’s telescoping pin system gives homeowners near-commercial security in a standard footprint, and our technicians are qualified to cut and register the restricted keys. Whether you have Yale, Schlage, Kwikset, Medeco, Baldwin, Mul-T-Lock, or any other make, we can help.
Signs You Need a Pro Right Now
- Your key turns but the deadbolt does not throw. This often means the tailpiece has stripped or the cylinder is failing. A lock that half-works is a lock that may not lock at all the next time you leave.
- Someone moved out and kept their key. Even if you trust them, their copy could be borrowed, lost, or copied. Rekeying or changing the cylinder removes that floating key from existence.
- The lock is loose in the door. If the hardware wobbles when you grab it, the mounting screws are pulling through the wood or the strike plate is misaligned. A loose lock is a pry-bar invitation.
- You found the door open and you are sure you locked it. Do not wait to see if it happens again. Change the lock or cylinder that day, and we will check the strike plate and frame for signs of tampering.
- The key is hard to insert or pull out. Grit, corrosion, or worn pins are chewing up the keyway. The lock may still work today, but forced operation is how keys snap off inside the cylinder.
Our Process, Step by Step
- 1
You call and speak to a live person. No voicemail trees, no chatbot. We listen to what is going on, schedule a window, and send you the technician’s name and photo before the visit so you know exactly who to expect.
- 2
The technician arrives, badges first. The badge is held up to the door or shown through a window before you open up. It matches the name and photo we sent. If it does not, that visit is covered at no charge under the Threshold Standard.
- 3
We inspect the door, frame, and existing hardware. We check the alignment of the strike plate, the depth of the lock bore, and the condition of the hinges. Those details decide whether a cylinder change is enough or a full lock replacement is warranted.
- 4
You get a written price before any work starts. That number includes hardware, labor, and any adjustments to the frame or strike plate. No estimate that balloons, no surprise total at the end.
- 5
We complete the work, test it, and hand you the written guarantee. The 365-Day Done Right Promise covers every repair and installation. If the work fails within a year, we return at no charge and make it right.
How Much Does Change Door Locks Cost?
A standard door lock change for a knob or deadbolt runs $85 to $210 per door, while high-security hardware from Medeco or Mul-T-Lock typically lands between $200 and $450 installed. Changing a lock cylinder is usually the most affordable option at $65 to $140, and patio door hardware falls in the $95 to $240 range depending on whether we are adding a secondary bolt. If you are adding a deadbolt to a door that never had one, plan for $90 to $250 because the door and frame both need to be drilled and prepped.
Several factors move the price. Door material matters: steel and fiberglass doors take longer to bore cleanly than wood, and solid brass hardware costs more than zinc. The condition of the existing hole also matters. If the old lock was installed off-center or the strike plate screws are stripped, we repair that before mounting new hardware, and that labor is in the written quote, never added after. High-security cylinders cost more than standard pin-tumbler cylinders because the hardware itself is more expensive and the keying requires tighter tolerances.
To avoid overpaying, get the full price in writing before the job starts. We do that on every single visit, with no exceptions. The free estimate includes the inspection, the hardware recommendation, and the total price. If you decide not to proceed, you owe nothing for the visit.
Where We Work
Dunmore Locksmith serves homeowners and businesses across the United States through a network of local crews operating under the Threshold Group umbrella, including our Change Door Locks in Los Angeles team. Our structure lets us keep dispatch local while holding every job to the same written-price, background-checked, and guaranteed standard. Wherever you are, the technician at your door has been identified to you by name and photo before arrival.
Frequently Asked Questions About Change Door Locks
A door lock change removes your existing knob, deadbolt, or cylinder and installs new hardware so old keys can no longer operate the door. We also realign the strike plate and check the frame so the new lock seats and throws correctly. It differs from rekeying, which keeps the same hardware but changes the internal pins so old keys stop working.
A standard door lock change takes 30 to 60 minutes per door once the technician starts. Cylinder changes are usually faster, about 15 to 30 minutes, while adding a deadbolt to an unprepared door can take 90 minutes or more. Most single-door jobs are finished in one visit.
Standard lock changes run $85 to $210 per door, cylinder changes $65 to $140, and high-security hardware $200 to $450 installed. The price depends on the hardware you choose, the door material, and whether the frame needs repair. You get a written price before any work starts, and that is the price you pay.
Yes, our technicians are factory-authorized for Medeco hardware and stock OEM pins, springs, and tailpieces. Medeco’s restricted keyways mean keys can only be duplicated by authorized dealers with proper identification, which is exactly why customers choose them. We also service Mul-T-Lock, Baldwin, Schlage, Kwikset, Yale, and Sargent.
Our phones are answered by a live person 24 hours a day, 365 days a year, and emergency lock changes are dispatched as soon as a technician is available. If you have a door that will not lock or a lock that has been damaged, call (910) 714-4287 and we will tell you exactly when we can be there. You will have the technician’s name and photo before the visit.
Yes, every repair and installation carries the 365-Day Done Right Promise. If the work fails within a year, we return at no charge and make it right. The guarantee is written, not verbal, and it covers both the hardware we installed and the labor.
You do not need to do anything before the technician arrives, but it helps to know how many doors you want changed and whether you want them on one key. If you have the existing keys, keep them handy even if they are broken, since they can help identify the cylinder. The technician will handle the rest, including cleanup of any drilling debris.
Schedule Your Change Door Locks Service Today
Whether you need a single lock changed or every exterior door in the house, call (910) 714-4287 for a free no-obligation estimate, including Change Door Locks in Huntington Park and surrounding areas. A live person answers, any hour, every day, and the price goes in writing before any work begins. You will know your technician by name and photo before the visit. If you want serious hardware and a company that stands behind it, we are ready.
Written by Perry Osgood, Owner at Dunmore Locksmith, serving customers nationwide since 2007.