When is replacing a lock the right call?
Most people call a locksmith when something has already gone wrong: the key turns halfway and stops, the deadbolt throws only if you lift the door, or the handle spins without catching the latch. Sometimes those problems can be fixed. Sometimes the honest answer is that the lock has reached the end of its life, and putting more time into it just delays the same call.
Lock replacement means we remove the existing lockset or deadbolt and install new hardware in its place. That is different from rekeying, where the lock body stays and only the internal pins change so old keys stop working. It is also different from repair, where we fix a worn part inside a lock that is otherwise sound. If you are not sure which one you need, that is a normal place to start, and we will tell you straight which route makes sense once we see the door.
Replacement is usually the right move in a handful of situations:
- The lock is physically damaged, bent, cracked, or has been forced during an attempted break-in.
- The cylinder is so worn that the key sticks, needs wiggling, or has started to break off.
- The finish has corroded or the internal parts have seized from years of sun and grit.
- The hardware is a type that cannot be rekeyed or no longer has parts available.
- You want a real security lock upgrade, such as a stronger deadbolt, a higher-grade cylinder, or a keypad or smart lock.
- You are moving in and the previous owner's hardware is cheap, mismatched, or of unknown history.
Why do exterior locks in Altadena wear out?
Altadena sits in the foothills, and the climate is hard on door hardware in two particular ways. Summers run hotter than in the basin, and a door that faces west or south can take direct, intense sun for hours. That sun fades and cracks cheap finishes, bakes lubricant out of the mechanism, and makes plastic or thin plated parts brittle.
The other factor is the Santa Ana wind. These are strong, dry winds that come off the San Gabriel Mountains, and they carry fine grit. That grit works its way into keyways and latch bolts. Over a few seasons it acts like a grinding compound inside the lock. The usual symptoms are a key that feels gritty going in, a latch that sticks in its strike plate, or a deadbolt that gets harder to turn each month.
We mention this because it affects what we recommend. On a door that takes sun and wind directly, we lean toward hardware with solid brass or steel construction and a finish that holds up to heat, rather than the lightest-duty option on the shelf. A lock that costs a little more up front and lasts years in that exposure is often the more sensible purchase than replacing a thin one repeatedly.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366How does a lock replacement work, step by step?
Here is how a typical visit goes, whether it is a front door lock replacement on a house or a single door at a small property. We come in a mobile van stocked with common hardware, and we work from our Westwood storefront for anything that needs to be sourced or prepared ahead.
- You call (213) 577-1366 and describe the door, the lock, and what happened. We ask whether the door is currently secure, since that decides how urgently we need to get there.
- We look at the door itself first: its thickness, the bore hole size, the edge preparation, the strike plate, and the condition of the frame. A new lock is only as good as the wood or metal around it.
- We explain your options on the spot, including whether repair or rekeying would honestly do the job, and what the replacement choices are in terms of grade, finish, and features.
- We remove the old hardware and check for damage to the door, such as splintering around a forced latch, an oversized hole, or a loose frame.
- We install the new lock, align the latch and bolt with the strike plate, and reinforce the strike or frame where it is weak.
- We test the lock repeatedly from both sides with the door open and closed, and make sure every key works smoothly.
- We hand you the keys, show you how any special features operate, and explain how to keep the lock in good condition.
Which replacement lock should you choose?
There is no single best lock. The right choice depends on the door, how it is used, and what you are worried about. A few common paths:
- A standard keyed entry set and deadbolt: the straightforward choice for most front doors, and often the more economical route when the door is in good shape. If you only need the bolt, see our deadbolt installation page.
- A higher-security cylinder or reinforced hardware: worth considering where a break-in has already happened or where the door is out of sight. Our high-security locks page explains the difference in grades and key control.
- A keypad or smart lock: useful for families, shared access, or anyone tired of hiding spare keys. We cover the details on the smart lock installation page, including the tradeoffs, like batteries and how the door is prepared.
- Matching sets: if you want the entry handle, deadbolt, and any secondary doors keyed alike so one key does everything, tell us up front so we can order and plan for it.
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 Altadena?
We do not quote numbers on a web page, because any figure given without seeing the door would be a guess. What we can do is tell you exactly what moves the cost, so you know what you are paying for.
The biggest factor is the hardware itself. A basic grade lockset, a heavy-duty deadbolt, a high-security cylinder, and a smart lock sit in very different places. Finish matters too, as does whether you want several locks keyed alike.
The second factor is the door. If the existing holes line up with new hardware, the work is quick. If the door has been damaged by a forced entry, or the bore is the wrong size, or the frame needs reinforcement, that adds labor and parts. Older doors sometimes need a bit of woodwork to take modern hardware cleanly.
The third is timing and location. A scheduled visit during the day is simpler to plan than a late-night emergency call, and Altadena is about 26 miles from our Westwood base, so travel is part of the picture. We tell you the full cost before we begin any work, and we explain which items are optional.
If the lock is merely worn and the rest of the hardware is sound, a lock repair or rekey may be the lighter-cost option. We will say so if that is the case, even though it means a smaller job for us.
What about apartments, rentals, and businesses?
Apartment lock replacement comes up often after a tenant moves out, after a lost key, or after a break-in. In most rentals the point is to make sure nobody holding an old key can still get in. If the lock is in good working order, rekeying may be enough, but when the hardware is worn or damaged, a full replacement is cleaner and gives the next tenant something that works properly. Landlords managing several units can have every door keyed the way they need.
Business lock replacement follows the same logic with a few more considerations. A shop or office door takes much heavier use than a house door, so the hardware needs to be built for it. We look at how many people hold keys, whether a master key arrangement makes sense, how the door closes, and whether the lock meets the demands of the building. Commercial lock replacement often involves closers, exit devices, and strike hardware along with the lock itself, which is why we look at the whole door rather than just the cylinder. Our commercial door hardware page covers that side of the work.
A business security upgrade can be as simple as replacing one weak lock on a back door, or as involved as changing every entrance to a higher grade. We would rather start with the doors that actually get tested by thieves, usually the rear and side entries, than sell you a package of things you do not need.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366What does lock replacement look like across Altadena?
Altadena is not one kind of neighborhood, and the work varies from block to block. In and around the Christmas Tree Lane district off Santa Rosa Avenue, a number of older Craftsman homes still carry original early-1900s hardware. Those doors can be beautiful, but the locks were never designed for modern security. Replacing them takes care: we try to fit new hardware without enlarging holes or damaging old wood, and in some cases we recommend keeping the original look on the inside while upgrading what actually secures the door.
In Janes Village, the cottages are smaller and the doors often have their own quirks, including older frames that have settled. A new lock only works if the bolt lines up properly, so we spend time on alignment and strike reinforcement. In The Meadows and the Country Club area, a mix of mid-century and later construction means we see a wide range of hardware generations on the same street.
The big local story is rebuilding. The January 2025 Eaton Fire destroyed thousands of structures, and West Altadena was hit especially hard. Today, new-construction door hardware sits next to original locksets on blocks that survived. For a home under reconstruction or newly finished, lock installation and replacement often means putting in permanent hardware to replace the temporary or builder-grade locks used during construction, then having the final keys set so only the owner holds them. We can also help the surviving homes nearby that have been sitting through smoke, ash, and grit, and now have locks that stick or feel rough.
La Viña, the gated hillside community at the northwest edge, has its own mix of gates and entry doors; for gates specifically, our mobile locksmith service can bring parts and tools to you. Whatever the ZIP, and 91001 covers all of Altadena, the approach is the same: look at the actual door, explain the options, and install something that fits.
Why call Wilshire Lock & Key for a replacement?
We have been in business since 1987, and we serve 140 cities across Los Angeles and Ventura counties. Altadena is one of them. We operate from a real storefront at 10740 Wilshire Blvd in Westwood, plus mobile service vans, so you are dealing with an established shop rather than a name on a listing.
When you call (213) 577-1366, the line is answered 24 hours a day, 7 days a week, year-round. We are one company. There is no dispatch middleman who takes your call and passes the job to whoever is available, which is a common arrangement in this trade and a common source of surprises. David, the owner and lead technician, oversees the work.
We are also happy to tell you when you do not need a replacement. If a rekey or repair is enough, we say so. And if you ever find yourself locked out before a replacement can even begin, our house lockout service is the place to start.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366What should you ask any locksmith before they start?
California requires locksmith companies to hold a BSIS LCO license, issued through the Bureau of Security and Investigative Services. Ask any locksmith you are considering, including us, for that license information before work begins, and be cautious about anyone who avoids the question.
A few other sensible questions: Will you give me the total cost before starting? Is the lock a recognized brand, and what grade is it? Who will actually come to my door? Will you drill the old lock, or is there a non-destructive option? A straightforward company answers all of these without hesitation.
Also be wary of anyone who insists on replacing a lock that you were told only needs a small fix. Replacement is often the right call, but it should come with a reason you can understand.
Frequently asked questions
What is the difference between lock replacement and rekeying?
Replacement swaps the whole lock or deadbolt for new hardware. Rekeying keeps the existing lock body and changes the internal pins so old keys no longer work. Rekeying is usually the lighter-cost choice when the lock is in good condition, while replacement makes sense when the lock is damaged, worn, or outdated. Our lock rekey page covers the rekeying side.
Can you replace a lock the same day I call in Altadena?
We answer the phone 24 hours a day, every day, and we try to schedule as quickly as we can. Timing depends on where our vans are and what the job requires, so we give you a straight answer when you call (213) 577-1366 rather than a promise we cannot be sure of.
Do I need a new lock after a break-in attempt?
Often yes. Forced entry can bend the latch, crack the cylinder, or weaken the door frame, even when the door still seems to close. We inspect the lock, strike plate, and frame, then tell you whether replacement and reinforcement are needed, or whether a smaller repair will do.
Will a new lock fit my older Craftsman door?
Usually, though older doors can have unusual bore sizes, thickness, or worn edges. We measure before choosing hardware and adjust the door preparation when needed. The goal is to fit solid new hardware without damaging original wood any more than necessary.
Can you replace locks on a home that is being rebuilt after the Eaton Fire?
Yes. Rebuilt homes often have builder-grade or temporary hardware during construction, and owners want final locks installed once the work is done. We can put in permanent hardware and set the keys so only the people you choose have them.
What affects the cost of replacing a front door lock?
The hardware grade and type, the condition of the door and frame, how many locks you want keyed alike, and the time and distance involved. We explain these and give the total before starting, so there are no surprises once the work begins.
Do you replace locks for apartments and businesses too?
Yes. We handle apartment lock replacement for tenants and landlords, and business lock replacement for shops and offices, including heavier-duty hardware and master key arrangements where they make sense. We look at the entire door, not just the cylinder.
Should I choose a smart lock for my replacement?
It depends on how you live. Smart locks are convenient for shared access and for people who dislike carrying keys, but they depend on batteries and need the door to be prepared correctly. We walk through the tradeoffs with you, and a traditional keyed deadbolt is still a perfectly good choice.
More locksmith help in Altadena
Lock Replacement near Altadena
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.