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Wilshire Lock & Key

24/7 locksmith · Northridge, CA

Lock Replacement in Northridge, CA

Wilshire Lock & Key replaces damaged, worn, and outdated locks in Northridge, CA, on homes, apartments, and businesses. We answer 24 hours a day, 7 days a week, and send a mobile van with hardware to your door. Call (213) 577-1366 and we'll work out what actually needs replacing.

  • Since 1987
  • Westwood storefront + mobile vans
  • A person answers, day or night
Old worn lock removed beside a new deadbolt being fitted to a door

When is lock replacement the right call?

Most people call us about replacement because something has gone wrong with a lock they can see and feel: a deadbolt that grinds before it turns, a knob that spins loose on the door, a latch that no longer catches the strike plate, or a key that has to be wiggled and lifted before it works. Replacing the lock is the right answer when the hardware itself has worn out, been damaged, or simply no longer suits the door it is on.

It is not always the right answer, and we would rather say so than sell you something you do not need. If the lock is in good shape and your only worry is who holds a copy of the key, rekeying the lock changes the internal pins and keeps the hardware you already own. That is usually the more economical route. If one part is sticking or a strike plate is out of line, a lock repair may be all the door needs. We look at the lock first and recommend second.

Replacement is usually the better choice in these situations:

  • The cylinder is worn enough that keys stick, bend, or break, or the lock needs force to turn.
  • The lock was damaged in a break-in attempt, a forced entry, or a door that was kicked in.
  • The bolt or latch is bent, or something inside the mechanism has broken and cannot be fixed sensibly.
  • The finish is corroded, the lever sags, or the knob wobbles no matter how often it is tightened.
  • The lock is an older, basic model and you want a security lock upgrade rather than the same weak hardware again.
  • You have moved in and have no idea how many keys are out there, and the hardware is old anyway.
  • Apartment or business hardware has been through so many tenants or employees that it is past its useful life.

How we replace a lock, step by step

A good replacement is mostly careful measuring and careful fitting. The lock itself is the easy part. Here is how a typical visit goes, whether it is a front door lock replacement on a house or a back-office door at a business.

  1. You call (213) 577-1366. The line is answered around the clock, every day of the year. Tell us the type of door, what the lock is doing, and whether you are currently locked out.
  2. A mobile van comes to you. Our vans carry common residential and commercial hardware, so many replacements are finished in a single visit. If your door needs something unusual or older, we will tell you that up front instead of improvising.
  3. We inspect the door, not just the lock. We check the bore holes, the edge of the door, the strike plate, and the frame, and we look for a door that has shifted or swollen, because a new lock on a misaligned door will fail the same way the old one did.
  4. We explain your options and what drives the cost before work begins, so you choose the hardware with the full picture in front of you.
  5. We remove the old lock, fit the new one, set the strike so the bolt throws cleanly into the frame, and test the door open and closed several times.
  6. We cut and test the keys, hand them to you, and make sure every key you were given actually works before we leave.

Locked out or need a locksmith now?

We answer around the clock, every day of the year.

Call (213) 577-1366

Which lock should replace the old one?

Choosing hardware is where a replacement either solves the problem for good or repeats it. For house lock replacement, the front door usually carries two pieces of hardware: a deadbolt that does the real security work, and a knob, lever, or handleset that latches the door. If your deadbolt is the failed piece, or it was never a strong one, we can install a new deadbolt as part of the same visit.

Residential lock hardware is commonly sold in grades, with the heavier grades built from thicker metal and tougher internal parts. A basic builder-grade lock can do the job on an interior door. On an exterior door that sees daily use, heavier hardware tends to last longer and resist forcing better. We will tell you what we would put on your door and why.

Some of the choices we walk people through:

  • Keyed deadbolt, single or double cylinder, depending on the door and whether there is glass nearby.
  • Knob, lever, or handleset for the latch side, including matching the finish to your other hardware.
  • Keyed-alike sets, so one key works the front, back, and side doors.
  • Higher-security cylinders with pick and drill resistance, for people who want more than standard hardware.
  • Keypad or app-based locks, which we cover in more detail on our smart lock installation page.

How much does lock replacement cost in Northridge?

We do not quote numbers on a web page, because the honest answer depends on your door. A lock replacement can be a short, simple job or a longer one, and the difference comes down to a handful of things we can only see in person or hear described on the phone.

What moves the cost up or down:

  • The hardware itself: a basic lock, a heavier-grade lock, a high-security cylinder, and a smart lock are very different products.
  • How many locks you are replacing, and whether you want them keyed alike.
  • The condition of the door and frame: a clean, well-aligned door goes quickly, while a damaged or drilled door may need repair work around the lock.
  • Whether the bore holes or the door prep need to be modified to fit a different style of lock.
  • Finish matching, special-order hardware, or older models that are harder to source.
  • Whether we also have to open the door because you are locked out.
  • The time of day and where you are in our service area, since a late-night call to a mobile van is a different job than a daytime visit.
  • Residential versus commercial hardware, since commercial locks and door-specific parts are built and priced differently.

Locked out or need a locksmith now?

We answer around the clock, every day of the year.

Call (213) 577-1366

Apartment lock replacement: tenants, owners, and managers

Apartment lock replacement has a few wrinkles that a single-family home does not. If you rent, check your lease and talk to your landlord or property manager before swapping hardware. Many buildings require the management to hold a key, and changing a lock without permission can cause trouble you do not need. If your lock is broken and the door will not secure, tell management in writing and call us if they authorize the work.

For owners and managers, the issue is usually wear. A unit that turns over several times a year puts a lot of use on a lock. Keys get copied, cylinders loosen, and levers sag. Replacing the hardware between tenants, rather than patching it again and again, is often what keeps a building secure and the maintenance calls down. We handle that work for property owners and can set up a routine around turnovers; the details are on our locksmith for landlords page.

If you are standing outside your own apartment right now, the first job is getting in. Our apartment lockout service comes first, and we can look at replacing the lock afterward if the lock is the reason you are stuck.

Commercial lock replacement and business security upgrades

Business lock replacement follows the same logic as a house, with a few more constraints. Doors that open onto public areas or exits have to let people out safely, so we pick hardware that fits the door's job, not just whatever fits the hole. Storefront doors, back-of-house doors, and office suites each want something different.

A business security upgrade often starts with a simple question: who has keys, and do you know? If employees have come and gone and nobody has tracked the keys, replacing the cylinders or the locks is cleaner than guessing. For multi-door buildings, a master key system lets you control who opens what without carrying a ring of keys. And if the door itself needs more than a new lock, our commercial door hardware work covers closers, exit devices, and related parts.

When you call about a business, tell us the kind of door, how many doors are involved, and whether the building has to stay secured the same day. Having a door that cannot lock is a real problem for a business, and we treat it that way.

Lock replacement around Northridge: homes, student housing, and storefronts

Northridge is about 20 miles from our Westwood storefront, and we work throughout both Northridge ZIP codes, 91324 and 91325. The neighborhood is a mix of housing that was built at different times and has been repaired at different times, and that mix shapes what lock replacement looks like here.

The 1950s and 1960s ranch tracts, including the ones along the Devonshire Street corridor, often have doors and hardware that have been through decades of owners. Some have original-era locks, some have a patchwork of whatever was on sale when something broke. Replacing worn or mismatched hardware on these homes usually means a clean new set on the front and back doors, sized to fit the older door preparation. On the western edge toward Sherwood Forest, larger lots tend to mean more doors to deal with: side gates, garage entries, and back doors that all deserve the same attention as the front.

Around the CSUN campus area, the pressure is different. Student apartments are high-turnover housing, and the practical effect is worn hardware. Locks get used hard, keys multiply, and the move-in and move-out weeks at the start and end of each semester are when problems surface. That is when we see lockouts, and also when a lock that has been failing for months finally gives out. The 1994 earthquake took its name from Northridge, and much of the multifamily stock here was repaired or rebuilt afterward, so frames and door hardware vary widely in age. A newer lock on an older or reworked frame needs a careful fit, which is why we check the strike and frame, not just the lock.

The climate matters too. North Valley summers are long and hot, and fall brings Santa Ana wind events. Heat can make sun-exposed doors expand and bind, and a lock that has to fight a swollen door wears out faster. If your door sticks in the afternoon heat and frees up in the evening, tell us. Sometimes the right fix is adjusting the door, not just the lock.

For businesses, the Reseda Boulevard corridor is full of commercial doors that need regular lock work, and the Northridge Fashion Center district brings retail locks and master-key needs. Offices near Northridge Hospital Medical Center sometimes need rekeys or replacements after staff changes. Whatever the building, the approach is the same: look at the door, recommend the right hardware, and fit it properly. For wider coverage, see our Northridge locksmith overview.

Locked out or need a locksmith now?

We answer around the clock, every day of the year.

Call (213) 577-1366

Why call Wilshire Lock & Key for a replacement?

We have been in business since 1987, and the company is still run the same way: David is the owner and lead technician, and he oversees the work that goes out under our name. We are one company with a storefront at 10740 Wilshire Blvd in Westwood and our own mobile service vans. There is no dispatch middleman that sells your call to someone else, so the person you reach is the company that sends the van.

We serve 140 cities across Los Angeles and Ventura counties, and the phone line, (213) 577-1366, is answered 24 hours a day, 7 days a week, year-round. That matters for replacements more than people expect. A broken lock at night is not something you can wait on, and a business that cannot lock its door needs help before it opens.

We also try to be straightforward. If rekeying or a small repair solves your problem, we will tell you. If the door or frame is the real issue, we will tell you that too. You decide, with the facts in front of you.

What to ask any locksmith before they start

California requires locksmith companies to hold a Bureau of Security and Investigative Services (BSIS) locksmith company license, known as an LCO license. Ask any locksmith for that license number before work begins, and check it with BSIS. It is a fair question, and a reputable company will answer it without hesitation.

A few other things worth asking before anyone touches your door: what the work will involve, what the lock will be and what grade it is, what drives the cost, and whether they will check the door and frame, not just swap the cylinder. If you are locked out, ask how they plan to get in without damaging the door. If the answer is vague, call someone else.

If you are not sure what you need, call (213) 577-1366 and describe what the lock is doing. We will tell you whether it sounds like a replacement, a rekey, or a repair, and what to expect from a visit. You can also reach us through our contact page.

Frequently asked questions

Should I replace my lock or just rekey it?

If the lock works well and your concern is who has a key, rekeying is usually the more economical route because you keep the hardware. Replace the lock when it is worn, damaged, loose, corroded, or weak for the door it protects. When you call, we will ask what the lock is doing and tell you which way we lean.

How long does a lock replacement take?

A single standard lock on a door in good shape is a quick job. It takes longer when we are replacing several locks, matching them to one key, repairing a damaged door, or modifying the door to fit new hardware. We will give you a realistic idea once we have seen the door.

What if I am locked out and the lock is broken?

We open the door first, using the least destructive method that works, and then replace the lock once you are inside. If you are locked out of a house right now, our house lockout service is the place to start, and the replacement can follow in the same visit.

Can you replace a lock on a damaged or forced door?

Yes, within limits. If a door was kicked in or drilled, the frame, strike plate, or area around the lock may be damaged. We will tell you what the door needs to hold a new lock securely. If the door or frame needs carpentry we do not do, we will say so rather than put a new lock on a door that cannot hold it.

Can all my doors be keyed to the same key?

Usually, yes. Keyed-alike sets let one key open the front, back, and side doors. The mix of old and new hardware on your doors affects what is possible, so we will check what you already have and tell you how to get to a single key.

Do you replace locks in apartments and rentals?

Yes, for tenants who have permission and for owners and managers. If you rent, get your landlord's approval first, since many buildings need management to retain a key. Owners with several units can ask about handling replacements between tenants.

Do you handle business lock replacement outside normal hours?

Our phone line is answered 24 hours a day, 7 days a week. If a business door will not lock, call right away and tell us what kind of door it is and whether the building has to be secured tonight. We will tell you what we can do and when.

Does Northridge's heat affect my locks?

It can. Long hot summers and fall Santa Ana wind events make sun-exposed doors expand and bind, and a lock that fights a tight door wears faster. If your door sticks in the afternoon and frees up in the evening, mention it. The fix may involve the door as well as the lock.

More locksmith help in Northridge

Lock Replacement near Northridge

Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.

Last updated 2026-10-11.

Ready for lock replacement in Northridge?

We answer around the clock, every day of the year.

Call (213) 577-1366
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