When does a lock need to be replaced instead of fixed?
Most people call us about replacement for one of two reasons. Either the lock has quit working, or something has happened that makes them stop trusting it. Both are good reasons, but they do not always lead to the same answer, and part of our job is telling you honestly which one you are dealing with.
A lock is usually past saving when the internal parts are worn out or broken. A key that sticks, grinds, or has to be wiggled and lifted before it turns is telling you the pins and springs inside are tired. A deadbolt that no longer throws all the way, a latch that hangs up in the strike plate, or a handle that spins loose on the door are other signs. Once a cylinder or latch has gone this far, repairs tend to be short-lived, and a new lock is the sounder choice.
Security is the other trigger. If a door was forced, if the lock was pried or drilled, or if a lock is simply so old that nobody can say how many keys are floating around, replacing the hardware gives you a clean slate. The same goes for a lock that was never much good to begin with. Many older homes still carry basic knob locks that a determined person can defeat quickly.
If your lock is failing in the middle of the night or you cannot secure a door at all, that is an emergency locksmith situation, and you can call us any hour. Otherwise, the points below cover how a replacement works and what to expect.
- The key is hard to insert, hard to turn, or no longer comes out smoothly
- The deadbolt or latch does not fully extend or retract
- The handle, knob, or lever is loose, cracked, or droops
- There are signs of a forced entry, such as pry marks, a bent strike plate, or a damaged cylinder
- You do not know how many copies of the old keys exist
- The hardware is outdated and offers little real resistance to forced entry
How do we replace a lock, step by step?
A replacement is not complicated work, but small details decide whether the new lock works smoothly for years or becomes the next problem. Here is how we handle it at a Westmont door.
- You call (213) 577-1366 and tell us which door, what the lock is doing, and what kind of building it is. A person answers, at any hour, and you are speaking with our company rather than a call center that passes your job along.
- A technician comes to you in one of our mobile vans, carrying a range of cylinders, deadbolts, knobsets, and levers so most doors can be finished in a single visit.
- We look at the door before we touch the lock. We check the bore holes, the backset, the door thickness, the strike plate, and the frame. We also look at why the old lock failed, because a swollen door or a misaligned latch will wreck a brand-new lock too.
- We go over your options with you in plain terms: what grade of hardware makes sense for that door, whether you want keyed-alike locks, and whether a lighter-cost standard lock or a stronger one fits how you actually use the door.
- We remove the old hardware, fit the new lock, and, where it matters, upgrade the strike plate and use longer screws that reach the framing instead of just the thin door jamb.
- We test the lock with the door open and closed, run every key, and make sure the bolt throws fully and the latch catches cleanly. You get all the keys, and you see the lock working before we pack up.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Should you replace, rekey, or repair?
These three jobs get mixed up all the time, and picking the wrong one either wastes money or leaves you less secure than you think.
Rekeying changes the internal pins so the old keys stop working, while keeping the same lock body. If your hardware is in good shape and your only concern is who has keys, lock rekeying is usually the more economical route. Repair makes sense when one part is the culprit, such as a sticking latch or a loose handle on an otherwise solid lock. We cover that under lock repair.
Replacement is the right call when the lock is worn out, damaged, low quality, or no longer matches what the door needs. It is also the right call if you simply want better hardware, or if the finish and style no longer suit the house. When we arrive, we will tell you if a cheaper-to-do option than replacement would actually solve your problem. We would rather you spend money once on the right fix than pay twice.
- Replace: worn, broken, forced, or low-grade hardware, or when you want a real upgrade
- Rekey: good hardware, but keys need to be reset after a move, a breakup, a lost key, or a tenant turnover
- Repair: a single failing part on a lock that is otherwise sound
Which lock should go on your door?
There is no single best lock. The right one depends on the door, who uses it, and how much resistance you want against forced entry.
For a front door, the deadbolt matters more than the handle. A knob or lever with a spring latch keeps the door closed, but the deadbolt is what resists a shoulder or a pry bar. If your front door only has a knob lock, adding or replacing with a solid single-cylinder deadbolt is the most worthwhile upgrade you can make. We install these under deadbolt installation when a door needs one added, and we do it as part of replacement when an old one is failing.
Hardware grade matters too. Heavier-duty locks use thicker metal, better internal parts, and more resistant bolts. If you want something with pick resistance, drill resistance, or controlled key copying, our page on high-security locks explains what that involves and when it is worth it.
Keys and convenience also factor in. Some people want every lock on the property keyed alike so one key works the front, back, and side doors. Some want hardware that handles heavy daily use, such as a shared entry in a multi-unit building. We will work through that with you rather than hand you a generic box off the shelf.
- Door material and thickness: solid wood, hollow-core, metal, or a door with a security screen in front of it
- Number of people using the door and how often
- Whether you want keyed-alike locks across the property
- The finish and style you want to see on the door
- How much resistance to forced entry the situation calls for
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366How much does lock replacement cost in Westmont?
We do not quote numbers on a web page, because a fair price depends on the specific door and lock in front of us. What we can do is tell you exactly what moves the cost up or down, so there are no surprises when we give you a figure on the phone or at the door.
The biggest factor is the hardware itself. A basic knobset and a heavy-duty deadbolt with a reinforced strike are very different products. Higher-grade locks and specialty cylinders cost more, and so does hardware that has to be ordered rather than stocked.
The second factor is the door. If the existing bore holes are standard and the door is in good shape, the work is straightforward. If the door has been damaged by a forced entry, the edge is split, or the holes are the wrong size, there is extra carpentry to do before a new lock will sit right. Older wood doors that have swollen or warped also take more time to fit properly.
Quantity and timing also affect the figure. Replacing one lock is simple. Replacing every lock on a building and keying them alike takes more time and more hardware. Work done outside normal hours can carry a different rate than a scheduled daytime visit, and we will say so up front.
Our approach is to look at the door, tell you the total for the job before we start, and let you decide. If a repair or rekey would solve your problem for less, we say so. That is how we have run the business since 1987.
- Hardware grade and brand
- Door condition, material, and bore size
- Whether the strike plate and frame need reinforcing
- How many locks are being replaced and whether they are keyed alike
- Time of day and how urgent the situation is
What about apartments, rentals, and small multifamily buildings?
Apartment lock replacement has its own considerations. In a rental, someone usually lives there, someone else owns it, and the lock has to work for both. Tenants should talk to their landlord before changing hardware, since many leases require that the owner or manager keep a way in. If you are the owner, we are glad to work directly with you.
Rental turnover is when most replacements happen. A previous tenant may have kept keys, a lock may have been worn down by years of use, or a unit may have been damaged by a lockout or a break-in. If the hardware is in good condition, a rekey is often enough, and we will say so. If it is not, we replace it, and we can set up a building so unit locks, common doors, and utility rooms follow a sensible key plan.
Landlords and property managers who handle several units can read more on our page for locksmith services for landlords. Mailbox hardware is a related item that often gets overlooked; if a cluster mailbox lock is broken or the keys are floating around, see mailbox lock replacement.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366What about business and storefront lock replacement?
Commercial lock replacement works on the same principles as residential, but the demands are heavier. A storefront door opens and closes all day, gets pushed and pulled by customers and staff, and is exposed to the street. Cheap hardware wears out quickly on a door like that.
If you run a shop, an office, or a small business in Westmont, a business security upgrade usually starts with the door that faces the public and the back door that does not. We look at the cylinder, the deadbolt or latch, the strike, the frame, and how the door is actually used. Sometimes the right move is a stronger commercial-grade lock. Sometimes the lock is fine and the real weakness is a loose frame or a poorly fitted door.
Employee turnover is another trigger. If someone who had a key has left, replacing or rekeying the cylinder is the straightforward way to close that gap. For doors that are sticking, misaligned, or damaged but not yet failing, our storefront lock repair page explains when repair is enough and when it is time to replace.
Lock replacement around Westmont: what we see on the ground
Westmont is a densely built, unincorporated part of Los Angeles County, and the housing here shapes the lock work more than anything else. Block after block has 1920s to 1940s bungalows and Spanish-style cottages, along with small postwar homes and two-story apartment buildings, especially along the Vermont, Normandie, and Western avenue corridors. A large share of households rent, and security screen doors and window bars are common.
That mix creates a recognizable pattern. On older bungalows, we often find original or very old knob locks, worn deadbolts, or a deadbolt that was added years ago and has since loosened. Replacing these with a solid deadbolt and a reinforced strike makes a real difference. Where a security screen door is in front of the main door, the screen door hardware often needs attention too, and the two locks should be considered together so the household is not carrying a pile of mismatched keys.
The apartment buildings along Vermont and Western avenues generate a steady run of unit-door replacements, shared-entry hardware, and mailbox lock changes, usually tied to turnovers or lost keys. Commercial storefronts along Century Boulevard and Manchester Avenue need door hardware that can handle constant use. Customers in the 90044 and 90047 ZIP codes call us from all of these settings, from the area around Jesse Owens Community Regional Park to streets near Vermont Knolls and near Morningside Park in Inglewood.
The climate here is gentle, with a regular morning marine layer and mild temperatures. Corrosion is a minor issue, but damp winter mornings can swell older wood doors and frames. A swollen door rubs the latch and puts stress on the bolt, and people often blame the lock when the real cause is the fit of the door. When we replace hardware on an older Westmont door, we check how it hangs and whether the latch lines up, so the new lock does not inherit the old problem.
Our storefront is at 10740 Wilshire Blvd in Westwood, about 14 miles from Westmont, and our mobile vans bring the work to your door.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Why call Wilshire Lock & Key for a replacement?
We have been in business since 1987, and we work from a real storefront at 10740 Wilshire Blvd, Los Angeles, CA 90024, with mobile service vans for jobs like yours. When you call (213) 577-1366, you reach our company, not a lead-selling dispatcher who hands your job to whoever bids lowest. The same outfit that answers the phone does the work.
David, the owner and lead technician, oversees how we operate, and that matters for a job like replacement, where the quality of the fit shows up months later rather than the day we leave. We answer every hour of every day, all year, so a broken lock on a holiday weekend gets the same attention as a Tuesday morning call.
One point worth knowing: California requires locksmith companies to hold a locksmith company license (an LCO license) issued through the Bureau of Security and Investigative Services, known as BSIS. You should ask any locksmith for their license number before they work on your door, including us. It is a reasonable question, and a legitimate company will answer it plainly.
If you are comparing options, ask what brand and grade of lock is going on your door, whether the strike plate and screws will be upgraded, and what the total will be before work starts. Those questions tell you quickly whether you are talking to a tradesperson or someone just filling a slot.
Frequently asked questions
How do I know if I need a new lock or just a repair?
If the problem is a single part, such as a loose handle or a latch that needs adjusting, repair may be enough. If the key grinds, the bolt does not fully throw, the cylinder is damaged, or the lock has been forced, replacement is usually the sounder choice. We look at the lock and tell you honestly which one fits.
Can you replace a lock at night or on a weekend in Westmont?
Yes. We answer the phone 24 hours a day, 7 days a week, year-round, at (213) 577-1366. Work outside normal business hours can be priced differently from a scheduled daytime visit, and we explain that before we start.
Is replacing a lock better than rekeying it?
It depends on the hardware. If the lock is in good shape and you just want old keys to stop working, rekeying is usually the more economical route. If the lock is worn, damaged, or low quality, replacing it makes more sense. Either way, we tell you which one we think fits your door.
Can you replace the lock on a door with a security screen in front of it?
Yes, and it is common in Westmont. We look at both the main door lock and the screen door hardware, since the two often work as a pair. We also check that the screen door does not block the new lock or make the key awkward to use.
My old wooden door sticks in the winter. Will a new lock fix that?
Not by itself. Damp winter mornings can swell older wood doors and frames, which makes the latch bind. A new lock on a door that rubs will wear out sooner. We check how the door hangs and how the latch lines up, and we adjust or advise on that as part of the replacement.
I rent my apartment. Can I replace the lock myself or call you?
Check your lease and talk to your landlord first, since many rentals require the owner to keep access. If your landlord approves, or if you are the owner, we can replace the hardware. Landlords and managers can also work with us directly on unit turnovers.
Do you replace locks on businesses and storefronts?
Yes. We handle business lock replacement and security upgrades, including storefront doors, back doors, and office entrances. We look at the lock, the door, and the frame together, since a strong lock on a weak door does not accomplish much.
What should I have ready when I call?
Tell us which door it is, what the lock is doing, what type of building it is, and whether there has been any damage or a break-in. A photo of the lock and door can help, but it is not required. We confirm details when the technician looks at the door.
How do I know your company is legitimate?
California requires locksmith companies to hold a BSIS locksmith company license, and you should ask any locksmith for it before work begins. You can also check that the company has a real address. Ours is 10740 Wilshire Blvd, Los Angeles, CA 90024, and we have been in business since 1987.
More locksmith help in Westmont
Lock Replacement near Westmont
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.
