What key duplication really involves, and why some copies fail
A key copy looks like the simplest job a locksmith does. You hand over a key, you get another one that matches. In practice, the quality of that copy decides whether you have a dependable spare or a key that sticks, forces the lock, and breaks off in the cylinder a year from now.
Most bad copies share the same causes. The original was already worn, and the copy inherited and added to that wear. The blank was the wrong profile for the keyway, so it fits loosely or not at all. The cutting was a hair off, which can feel fine for a week and then start dragging on the pins. Or the copy was made from another copy, and each generation drifts a little further from the original cut. Keys that have been copied three or four times in a row are a common reason a spare turns the front door only on a good day.
That is why we treat duplication as a precision task. We look at the original, check the blank against the lock it has to work in, and test the finished key before it leaves our hands. If your original is too worn to copy well, we say so, because a faithful copy of a bad key is still a bad key.
How we duplicate a key, step by step
The process is short, but each step is there for a reason. Here is how a typical house or office key copy goes, whether it happens at our Westwood storefront or through our mobile service.
- Identify the key. We check the brand, the keyway and the key type, because a deadbolt key, a knob key and a mailbox key can look similar and still use different blanks.
- Inspect the original. We look for rounded cuts, bent shoulders and cracks. If the key is badly worn, we may suggest cutting from the lock by code or having the lock rekeyed instead of copying a tired key.
- Match the blank. The blank has to fit the keyway exactly and sit correctly in the cutter, so the cuts land in the right place relative to the shoulder or tip.
- Cut and deburr. We cut the copy, then remove the rough metal edges so the key does not shed shavings into your lock or scrape the pins.
- Test in the real lock. A copy that looks right on the bench is not proven until it turns your actual cylinder smoothly. We test it, and if the lock is on site, we test it in place.
- Hand it back with a plain recommendation. If a lock is gritty, sagging or sticking, we tell you now, since a new key will not fix a failing lock.
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 explain exactly what moves the cost up or down, so nothing surprises you when you call (213) 577-1366.
A plain, common house key on a standard blank is usually the more economical end of the range. Cost climbs as the key becomes more specialized or as the job takes more of our time.
- Key type: a standard single-sided house key is simpler than a dimple key, a sidewinder, or a high-security profile with tighter tolerances.
- Blank availability: common blanks are easy to stock, while specialty blanks may need to be sourced.
- Restricted keyways: keys that are protected by the manufacturer often require proof of authorization, which adds steps.
- Quantity: several copies in one visit are usually handled more efficiently than a single copy.
- Location: bringing the key to our storefront is the lighter-cost route, while a mobile visit includes our travel to you.
- Time of day: we answer the phone 24 hours a day, and after-hours work is a different situation from a daytime errand.
- Condition of the original: a worn key can take extra time to read and may call for a different approach.
Duplicate house, apartment and deadbolt keys
House key copy requests are the bread and butter of key cutting. People come to us for a spare house key for a family member, a dog walker, a house cleaner or a neighbor who holds an emergency copy. The most common mistake is leaving the only spare under a planter or in a lockbox without thinking about who else may know where it is.
A duplicate deadbolt key deserves extra attention. Deadbolts often use a different keyway from the knob lock on the same door, and some homes have two separate keys for one entry. We confirm which key operates which lock so you do not end up with a useless spare.
Apartment key copy is a different kind of request. Many leases require tenants to ask the landlord or property manager before duplicating keys, and some buildings use controlled keys that we cannot copy without the owner's permission. If you manage rental property, our locksmith for landlords page lays out how we handle multi-unit key work. If you are a tenant and unsure, check your lease first. We would rather you ask than get a notice from your management.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Office and commercial key duplication
Office key duplication has one extra question that house keys do not: who is allowed to have a copy? In a business, a key is a form of access, and loose copies are a quiet security gap. A key that went home with a former employee years ago can still open the door today.
For commercial key duplication we copy standard office door keys, file cabinet keys, desk keys and storefront keys. We will also tell you plainly when a key is stamped as restricted, or when a master key system is in play. In a keyed-alike or master-keyed setup, the right fix for losing track of copies is often not another copy but a reorganized system, which is what master key system work is for.
If you want a record of who holds which key, we can talk through a simple key log while we cut your copies. It costs nothing and it makes the next staff change much easier.
Mailbox, high security and restricted key duplication
Mailbox key duplication depends on who owns the box. If the lock belongs to the Postal Service, as with many cluster boxes, the Postal Service controls the keys and the lock, and we cannot make copies for you. If it is a private mailbox, such as a wall unit or a box belonging to your HOA or building, we can usually cut a copy from your existing key. If you have lost every key to a private box, you are looking at a lock change rather than a copy, which is covered under mailbox lock replacement.
High security key duplication and restricted key duplication are where honest answers matter most. Restricted keyways exist so that copies cannot be made at a hardware store or kiosk. Manufacturers usually require a registered owner, an authorization card or a signature before more keys are produced. We follow those rules. That means we may need to see your card or verify that you are the account holder, and in some cases the manufacturer or an authorized source must provide the key. We will tell you right away which case you are in rather than promising something we cannot deliver.
If you currently use ordinary keys and want the protection that restricted keys offer, see our page on high-security locks. That is a separate project from copying what you already own.
Key duplication around Calabasas, from The Oaks to Old Town
Calabasas is largely single-family housing built from the 1970s through the 2000s, with a lot of guard-gated HOA communities, including The Oaks, Calabasas Hills and Mountain View Estates. In those communities the duplication conversation often has two layers: the key to your front door, which we can copy, and the access control for the community itself, which is usually managed by the HOA. We can talk you through what is yours to copy and what likely needs to go through your association. A homeowner in The Oaks of Calabasas asking for a spare house key is a straightforward request. A request for a community gate remote is something your HOA typically controls.
Condos and townhomes line the Las Virgenes Road corridor, and those are where we most often see duplication tangled up with shared hardware. Your unit key may be separate from the building entry key, and your HOA may have rules about who can copy which one. Calabasas Highlands and the Park Moderne area have older, smaller hillside homes on narrow streets, where original locks have been in service for decades. Worn original keys are common here, and copying a worn key just spreads the wear, so we often check the lock at the same time.
Sun and heat cycling are the main wear factors on exterior doors and gate hardware in Calabasas, and that matters for keys. A lock that has baked on a south-facing door for years can get stiff, and a stiff lock will punish a new copy faster than it punished the original. If your driveway gate or keypad on a hillside home in Calabasas Highlands has been balky, our gate lock repair page covers that side of things.
Businesses at The Commons at Calabasas and in Old Town Calabasas sometimes need quick duplicates of storefront or back-room keys, and we handle those along with the access questions described above. For homes rebuilt in canyon areas affected by the 2018 Woolsey Fire, new hardware typically comes with a small number of keys, and families often realize afterward that they need more. Whatever the neighborhood in ZIP code 91302, the process is the same: we check the key, match the blank, cut it, and test it in your lock.
Our storefront is at 10740 Wilshire Blvd in Westwood, roughly 22 miles from Calabasas. If you would rather not drive that far, our mobile locksmith service can come to you, depending on the key and the job.
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 key duplication
We have been in business since 1987, and in that time we have seen nearly every way a key can be worn, bent or miscut. We are a single company with a storefront and mobile service vans, not a dispatch center that hands your call to whoever is available. When you phone (213) 577-1366, the line is answered 24 hours a day, 7 days a week, all year.
David, the owner and lead technician, oversees the work. That matters for something as detail-driven as key cutting, because a copy depends on small tolerances and honest judgment about when to cut and when to advise against it.
One note on licensing. California requires locksmith companies to hold a BSIS LCO license, and you should ask any locksmith you call for that number before they begin work. It is a fair question and a good habit.
When a copy is not the right answer
Sometimes the right move is not to duplicate. If you have lost a key and do not know who found it, if a former tenant or contractor still has a copy, or if you have just moved into a home, adding more copies of an unknown key set only multiplies the problem. In those situations, lock rekeying resets your locks so old keys stop working, and then new copies can be cut for the people who should have them.
If you are tired of managing physical keys at all, a smart lock installation lets you issue and cancel access codes without cutting anything. Many Calabasas homeowners keep a mechanical key as a backup and use codes for guests and service visits.
Vehicle keys are a different category with their own technology. For those, please see our car key replacement page rather than assuming a house key process applies.
Frequently asked questions
Can you copy any house key in Calabasas?
Most standard house keys can be copied. The exceptions are keys stamped as restricted or tied to a protected keyway, which require authorization from the registered owner. We will check your key and tell you plainly which group it falls into before we start.
Do you come to my home, or do I have to bring the key in?
Both are available. You can bring the key to our storefront at 10740 Wilshire Blvd in Westwood, or you can ask about mobile service to your Calabasas address. Whether we can cut on site depends on the key and the blank, so call (213) 577-1366 and describe what you have.
Why does my new copy stick or fail to turn the lock?
Usually the original was worn, the blank was a poor match, or the lock itself is dirty or worn. A copy cut from a copy also drifts from the original. Bring the key and the problem lock if you can, and we will find which of those is the cause.
Can you duplicate a key stamped Do Not Duplicate?
That stamp is a request, not always a legal barrier, but we do not treat it lightly. If a key is stamped that way, we want to know who issued it and whether you have permission to copy it. Property managers, employers and building owners often issue those keys for a reason.
Can you copy a mailbox key?
If the mailbox is private, such as a wall unit or a box owned by your HOA or building, we can usually copy it from your existing key. If the lock belongs to the Postal Service, they control the keys and we cannot copy it. If every key is lost, the lock itself may need replacing.
How do I get a copy of a high-security or restricted key?
Restricted keys generally need the original authorization card or proof that you are the registered owner, because the manufacturer limits who can order more. We follow those rules. Call us with the brand stamped on the key and we will explain what is required.
Is it better to copy my keys or rekey the locks?
If you know exactly who holds every key, copying is fine. If you have lost a key, moved into a new place, or are unsure who has copies, rekeying is the safer choice because it makes old keys stop working. Many people rekey first and then cut new copies.
Can I get keys copied at night or on weekends?
Our phone line is answered 24 hours a day, 7 days a week, and we will tell you what can be done at that hour. Some duplication can be handled through mobile service, while other jobs are better done at the storefront. Call (213) 577-1366 and we will say which applies to your key.
More locksmith help in Calabasas
Key Duplication near Calabasas
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.
