Why a good key copy matters more than people expect
Most people think of key copying as a five-minute errand: hand over a key, get another one back. When it goes right, that is about what it is. When it goes wrong, you find out at the worst moment, standing at your own front door with a key that goes in but will not turn, or one that turns only if you lift the door and hold your tongue just so.
A copy is only as good as the key it was traced from and the machine and blank used to cut it. A worn original passes its wear on to the copy, and each generation drifts a little further from the factory cut. A blank that is slightly off in its shoulder or its width sits a hair differently in the lock. Any of these can produce a key that technically fits and still feels wrong. Over months, a rough copy also chews up the pins inside your lock and shortens its life.
That is why we treat duplicate keys as precision work rather than a counter chore. Whether you want a spare house key for a relative, an apartment key copy for a new roommate, a duplicate deadbolt key, or a set of office keys for a growing team, the goal is the same: a key that works smoothly on the first try and keeps working.
How we copy a key, step by step
Here is how a typical key copying job goes, whether it happens at our Westwood storefront at 10740 Wilshire Blvd or from one of our mobile vans.
- We look at the original. Before cutting anything, we check the key for wear, bends, and cracks. If it is badly worn, we say so, because copying a tired key just produces another tired key.
- We identify the keyway and pick the right blank. Brand, keyway, and length all matter. A blank that looks close but is not correct is the most common cause of a copy that sticks.
- We cut the new key to the original's pattern, then remove the burrs left by cutting so the key does not drag or snag inside the lock.
- We test the copy in the actual lock whenever the lock is available, such as at a house, office, or mobile appointment. We do not rely on a quick look.
- If the copy feels rough or turns stiffly, we adjust it or recut it before it leaves our hands.
- We tell you plainly if the problem is the lock rather than the key, since a worn or sticky lock can make even a perfect copy feel bad.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Which keys can we duplicate?
Most keys people carry can be copied without any fuss. Some take more care, and a few cannot be copied by anyone without the proper authorization. Here is how it breaks down.
Standard keys cover the large majority of everyday requests. Anything with a different key type, like a car key with electronics, is a separate job that we handle on our automotive side.
- House key copy: front door, back door, and side gate keys for single-family homes.
- Apartment key copy: unit door keys, deadbolt keys, and shared-entry keys, as long as the key is not restricted by the property.
- Duplicate deadbolt key: deadbolts often use a different keyway than the knob lock, so we match each one separately.
- Mailbox key duplication: small, easy to misplace, and often forgotten until mail piles up.
- Office key duplication and commercial key duplication: suite doors, storage rooms, file cabinets, and back-of-house doors.
- High security key duplication and restricted key duplication: possible with proper authorization, covered in the next section.
- Padlock, cabinet, and utility keys: usually straightforward, but we check the blank before cutting.
High-security and restricted key duplication: the honest version
Not every key is meant to be copied freely, and that is by design. High-security keyways, often used on better deadbolts and many commercial cylinders, are built so that blanks are controlled and unauthorized copies are hard to make. Restricted systems usually come with a card, a registered owner, or a property manager who decides who may have a copy.
What that means in practice: if your key is a restricted type, we will usually ask for the authorization card or confirmation from whoever controls the system before we cut a copy. That is not red tape for its own sake. It is how the system protects you, and it is the same reason you would want a locksmith to refuse a stranger who walked in with your key.
One thing worth knowing: a stamp that says "Do Not Duplicate" on a key is not a lock in itself. It does not physically stop a copy from being made, and a stamp alone does not mean a key is truly restricted. If control of your keys matters, such as for a rental unit, a business, or a home you are worried about, the stronger answer is a restricted keyway. Our page on high-security locks in Monterey Park explains what those systems offer.
If we cannot copy a particular key, we will tell you why and what the options are. Sometimes the answer is to go back to the property manager or original source. In some cases, the answer is a new cylinder with a keyway you control.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366What affects the cost of duplicate keys?
We do not quote numbers on a web page, because the honest answer depends on the key in your hand. What we can do is tell you what moves the cost up or down, so you know what to expect when you call (213) 577-1366.
The type of key is the biggest factor. A standard house key is the simple, usually more economical route. Keys with unusual keyways, high-security profiles, or restricted blanks involve harder-to-source blanks and more careful cutting, so they cost more to copy.
Quantity matters too. Cutting several keys of the same type in one visit is usually more efficient than several separate trips.
Location plays a role. A copy made at our storefront is a different job than a mobile visit where a technician drives to you. If you need a copy cut at a time when most shops are closed, that is a factor as well, since our phones are answered around the clock but a late-night trip is still a trip.
Condition of the original matters. If the original is too worn to copy well, we may suggest working from a better key, or in some cases creating a key from the lock itself, which is a different and more involved job than tracing a key.
The practical tip: call, describe the key, and tell us whether you will come to the storefront or want mobile service. We will explain what applies to your situation before any work starts.
Mobile key duplication in Monterey Park
Plenty of key work does not require you to leave your home or office. Our vans carry key-cutting equipment and a range of common blanks, so mobile key duplication is a real option, not just a phrase. It makes the most sense when you need several keys at once, when the keys have to be tested against the actual lock, or when getting out the door is hard.
Our base is the Westwood storefront, about 19 miles from Monterey Park, so we plan mobile visits sensibly rather than pretend every trip is the same. When you call, we will tell you straight how we can serve you, whether that means a mobile visit or a trip to the shop. Because one company handles everything, you are talking to the people who will actually do the work, not a dispatcher passing your job to a stranger.
A mobile appointment also lets us check things you might not think to mention. If a key is sticking, we can try it in the lock and tell you whether the key or the lock is at fault before you pay for a copy that will not fix the problem.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Key duplication around Monterey Park: what we see in the neighborhoods
Monterey Park has a wide mix of housing, and the kind of home often shapes what people need copied.
On the hillside streets, including the Monterey Highlands in the northeast hills, many homes are postwar ranch houses with long driveways and detached garages. That usually means more than one door to keep keys for: the house, the garage, and sometimes a side gate. A common request is a full set of spares so every family member is not sharing one key. When we cut a set like that, we label which key belongs to which door, since three nearly identical brass keys can be maddening to sort out at night.
Down in the southern flats near Montebello, prewar bungalows and older apartment buildings are common. In older buildings, mailbox keys get lost and never replaced. When a mailbox lock is too worn or the key cannot be found at all, a copy may not be the answer, and mailbox lock replacement can be the better fix.
Along Atlantic Boulevard and Garvey Avenue, much of the housing is 1980s-to-2000s condos and townhomes that rely on shared-entry and mailbox hardware. Picture a condo owner near Atlantic Times Square who gets locked out and realizes the only spare is inside the unit. That is the kind of call that turns into a request for extra keys afterward. For condos, the unit key, the mailbox key, and sometimes a building or garage key are all separate, and some of those may be controlled by the HOA or management, so we check what can be copied before we promise anything.
The same corridors have restaurants and storefronts. Owners along Garvey and Atlantic often need extra keys for opening and closing staff, and the answer there is rarely just more copies of one key. We cover that in the business section below.
We serve both Monterey Park ZIP codes, 91754 and 91755, and the surrounding areas, including the Sequoia Park area and the neighborhood around East Los Angeles College in the southwest. On the climate side, the hillside-and-valley mix means sun-exposed hillside doors weather a bit faster than those in the flats. The effect on locks is modest, but an older exterior lock on a sunny hillside door can feel stiffer than a protected one, and we will tell you if a copy is not the true fix.
Office, restaurant, and business key duplication
Business key duplication has a different set of concerns than copying a house key. The question is not just "can we copy it" but "who should be able to copy it." Every extra key out in the world is a key you may not be able to account for.
For small offices and storefronts, we copy standard commercial keys the same careful way we copy home keys. When the number of keys starts to grow, or when staff turn over, it is worth asking whether your setup still makes sense. A master key system lets different people open different doors with different keys, so you are not handing out one key that opens everything. Restricted keyways go a step further by controlling who can get copies cut at all.
If your issue is the door hardware itself rather than the keys, our commercial locksmith work covers that, and we will tell you if the right move is a different service from the one you called about.
For restaurant owners on Garvey and Atlantic, a useful habit is keeping a simple written log of who holds which key. It sounds basic, and it is, but it makes the next staffing change much cleaner.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366When a copy is not the right answer
Honesty is part of the job, so here are the cases where we will steer you away from simply cutting more keys.
If you lost a key and do not know where it went, a copy of the remaining key does not make your home any more secure. The lost key is still out there. In that situation, rekeying the lock so the old key no longer works is usually the better move, and it can often be done on the existing hardware.
If a key is broken in the lock, a copy will not help until the piece is removed. If your car key has an electronic component or you have lost every key to your vehicle, that is a different process, and our car key replacement service handles it. For vehicles we confirm details by VIN and in person rather than assume, and some vehicles may only be serviceable through a dealer, which we will tell you straight if it applies.
And if you are locked out right now, we are on the phone around the clock. Our 24-hour locksmith line is the same number as everything else: (213) 577-1366.
Why call Wilshire Lock & Key for key duplication
We have been in business since 1987, and we serve 140 cities across Los Angeles and Ventura counties, Monterey Park included. We run a real storefront at 10740 Wilshire Blvd in Westwood and mobile service vans, so you can bring us a key or have us come to you.
We are one company. There is no call center handing your job to whoever is closest. David, the owner and lead technician, oversees the work, which means the person who cares about the reputation is the one watching the quality.
A note on licensing, since it comes up: California requires locksmith companies to hold a license from the Bureau of Security and Investigative Services, known as a BSIS LCO license. You should ask any locksmith you hire for that license number, and you should expect a straight answer. That is simply good practice, whoever you call.
If you want a copy cut, a spare set made, or advice on whether a copy is even the right move, call (213) 577-1366 any hour of any day, or use our contact page to reach us.
Frequently asked questions
Can you copy any house key?
Most standard house keys can be copied. The exceptions are restricted or high-security keys, which usually require an authorization card or approval from whoever controls the system. If your key falls in that group, we will explain what is needed before cutting anything.
Does a "Do Not Duplicate" stamp mean you cannot copy my key?
Not by itself. The stamp is a request, not a physical lock, and it does not prove a key is truly restricted. We look at the actual keyway. If the key belongs to a controlled system, we ask for authorization. If it is a standard key with a stamp, we will talk through your situation with you first.
Can you make duplicate keys at my home in Monterey Park?
Yes, mobile key duplication is available. A van visit lets us test the copy in your actual lock and cut several keys in one stop. Call (213) 577-1366 and tell us the key type and how many copies you need.
Why does my new copy stick or not turn smoothly?
Usually it is one of three things: a worn original passing on its wear, a slightly wrong blank, or burrs left from cutting. Sometimes the lock itself is worn. Bring both the original and the copy, or have us test it in the lock, and we will tell you which it is.
Can you copy a mailbox key for my condo or apartment?
Often yes, if it is a standard mailbox key. Some buildings control mailbox keys through management or the postal service, so we check first. If the lock is worn out or the key is gone entirely, replacing the mailbox lock may make more sense than copying.
Can you copy a deadbolt key if it is different from my door knob key?
Yes. Deadbolts frequently use a different keyway than the knob lock, so we match each key to its own lock. Many people end up with two separate keys on the same door, and we can copy both.
I lost my only key. Should I just copy another one?
If you still have one key, copying it works. But if a key is lost somewhere unknown, the lock is still open to whoever finds it. In that case rekeying is often the safer answer, and we can talk through which fits your situation.
How much will duplicate keys cost?
It depends on the key type, how many copies, whether the key is high-security or restricted, and whether you come to our storefront or want a mobile visit. A standard house key is usually the more economical route. Call (213) 577-1366 and we will explain what applies to yours.
Can you copy a car key?
Some car keys are simple metal keys and some contain electronics, so it depends on the vehicle. We confirm by VIN and in person rather than guess, and we tell you honestly if a particular vehicle can only be handled through a dealer.
Are you available outside normal business hours?
Yes. Our phone line is answered 24 hours a day, seven days a week, year-round at (213) 577-1366. If you need key work late at night or on a holiday, call and we will tell you what we can do.
More locksmith help in Monterey Park
Key Duplication near Monterey Park
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.