Why get a spare house key made before you need one?
Almost everyone who calls about a spare key is in one of two situations. Either they are down to a single key and nervous about it, or they have a key that has been copied so many times it no longer turns smoothly. Both are worth fixing on a calm afternoon rather than at a locked door after dark.
The second situation is more common than people expect. A key copied from a copy carries the small errors of every generation before it. One cut that is a hair off still works. A copy of that cut, then a copy of that copy, starts to drag, catch, or turn only if you lift the door slightly. The fix is simple: cut new keys from the best original you have, or from the lock's key code when that is possible, and retire the tired ones.
A spare also only helps if it lives somewhere sensible. A key under a flowerpot is not a spare, it is an invitation. Giving a cut key to a neighbor, a relative, or a property manager you trust is the better habit, and the cost of cutting an extra is small next to the cost of a lockout. If you do get locked out, our house lockout and apartment lockout pages explain how that works, but a spare in the right hands usually makes that call unnecessary.
How does key duplication work at Wilshire Lock & Key?
Copying a key looks like a ten-second job from the outside, and for a plain house key it can be quick. The care is in the steps that happen before and after the cutter touches metal. This is how we handle it.
- We look at the original key. We check the brand markings, the keyway shape, any stamps on the bow, and how worn the cuts are. A badly worn original may need to be cut by code or from the lock itself rather than traced.
- We choose the right blank. The blank must match the keyway and profile of your lock. A blank that is almost right is the most common reason a copy binds, so we do not guess when two blanks look similar.
- We cut the key on the machine that suits that key type. Standard keys, dimple keys, and restricted profiles all need different setups, and we use the one that fits instead of forcing everything through one machine.
- We remove burrs and clean the cuts. Leftover metal shavings from the cut will scratch up your lock and make a new key feel rough.
- We test it. When the lock is available, such as a deadbolt on your front door, the copy should go in, turn, and pull out without a fight. If it does not, we recut it rather than send you home with a key that nearly works.
- We tell you what we see. If your original is badly worn, if the lock itself is gritty, or if a key type should be controlled, we say so plainly.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366What kinds of keys can we copy?
Most of the keys people bring in fall into a handful of groups. If you are unsure about yours, call and describe it or bring it by, and we will tell you straight whether it is a standard copy or something more involved.
- House key copy: standard residential keys for entry knobs, handlesets, and front-door locks, including a spare house key for a family member or house sitter.
- Duplicate deadbolt key: deadbolts often use a different keyway than the knob. We match each lock on its own, or work from one key if your whole house is keyed alike.
- Apartment key copy: unit keys, mailbox keys, and building-entry keys. Some building keys are controlled by the property manager, and we may ask for authorization.
- Office key duplication and commercial key duplication: door keys, desk and cabinet keys, and storefront keys. Larger sets may involve a key system, which we cover below.
- Mailbox key duplication: small flat keys for cluster boxes and individual mailboxes. The cut is simple, but the blank has to match the box.
- High security key duplication and restricted key duplication: patented or controlled keyways that need extra steps, explained in the next section.
What is different about restricted and high-security keys?
A restricted key is one whose blank is controlled by the manufacturer. That is the point of it: you cannot walk into any shop and have it copied on the spot. Usually the maker requires an authorization card, proof of ownership, or a request from the registered account holder. We follow those rules and tell you honestly when a particular key cannot be copied without that paperwork, or when the copy has to come through the manufacturer or a dealer instead of our machines.
If you have one of these systems and want to know what you actually own, our page on high-security locks explains how they work and why they are built this way. Sometimes the answer to a lost restricted key is not a copy at all, but a new cylinder with a new key.
Office and building keys bring a related issue. Where a business runs a master key system, a copy of a key may open more doors than the person holding it should be able to reach. For those jobs we confirm who is authorized, usually the owner or property manager, before cutting anything. If you manage a building and want to understand how that tiering works, look at our master key system page.
A note on Do Not Duplicate stamps: the stamp does not physically stop a machine from cutting the key. We treat it as a warning flag, especially on keys that belong to a business or building, and we may ask who is authorized before we proceed.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366How much does key duplication cost in Duarte?
We do not quote a price from 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 nothing surprises you when you call (213) 577-1366.
A plain house key on a common blank is a light job. A high-security or restricted key is not, because the blank is harder to source and the cutting is more exacting.
- Key type and blank: common residential blanks are easy to stock; specialty and restricted blanks are not.
- Cut method: copying a clean original is simpler than cutting by code or reconstructing a worn key.
- Quantity: a handful of spares for a household differs from a full set for an office or a rental.
- Where the work happens: bringing keys to our Westwood storefront is usually the more economical route. A mobile visit to Duarte adds travel and van time.
- Time of day: after-hours work is handled differently from a daytime visit, and we explain that on the phone.
- Authorization: restricted keys may require paperwork or a factory request, which adds steps.
- Condition of the original: a key that is bent, worn smooth, or already a bad copy may need extra work to get right.
Key duplication around Duarte: homes, apartments, and the foothill climate
Duarte, ZIP code 91010, has a mix of housing that creates distinct key needs. Most of the city's homes are postwar single-family houses from the 1940s through the 1960s, built along the Huntington Drive flats. Ranch homes and modest bungalows are the norm in areas like the Royal Oaks neighborhood. Many of those homes still carry original mid-century locksets. After decades of use, the keys that came with them, and the copies of those keys, are often worn thin. For these homes, a fresh round of duplicates cut from the best remaining original is often the quickest way to a front door that turns easily again.
Up on Duarte Mesa and in the canyon areas around Fish, Mel, and Spinks Canyons, the properties are larger hillside lots and custom homes. A common job there involves a sale or a tenant turnover. The lock gets changed through lock rekeying, and then the owner needs several new keys for the family, a cleaner, a contractor, and maybe a property manager. We cut those from the new keying so everyone has a working key from day one. If you are rekeying a hillside property and want to understand that service on its own, the rekey page covers it.
Closer to Huntington Drive and the Buena Vista Street corridor, townhome and apartment complexes mean apartment key copy requests, building-entry keys, and mailbox keys. Mailbox keys are small, easy to lose, and often overlooked until someone needs a package. We handle mailbox key duplication when the lock and blank are matched. If the mailbox lock itself is missing or damaged, that is a different job, covered under mailbox lock replacement.
Around the City of Hope campus area, visitor housing and apartments are a regular scenario. Short-stay and rotating occupants mean extra keys get made and sometimes lost. Anyone who manages units like that should look at our service for landlords, which explains how to keep key control manageable. Along the Huntington Drive business corridor, storefronts and small offices need duplicate keys for staff, and we handle commercial key duplication there as well.
Climate matters more than people think. Duarte sits against the San Gabriel foothills, with hot, dry summers and periodic Santa Ana winds coming out of the canyons. Sun-exposed doors expand in the heat, and wind-blown grit works into exterior locks. Grit in a lock wears keys faster and makes copies feel stiff even when they are cut correctly. If your key has started to stick, a fresh copy may not fix it, and we will tell you if the lock needs attention. If a key ever snaps in the lock, that is a separate job, covered under broken key extraction.
One more local scenario deserves a mention: people who park at the Duarte/City of Hope A Line park-and-ride and lose a car key. A car key is not the same job as copying a metal house key, and what is possible depends on the vehicle. We confirm by VIN and in person instead of promising something over the phone. Our page on car key replacement covers that route.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Can you come to me for mobile key duplication?
In many cases, yes. We run mobile service vans alongside our storefront, and Duarte is within the area we serve, about 33 miles from our base at 10740 Wilshire Blvd in Westwood. That distance is the reason we are straightforward with you: for a single spare of a standard key, bringing it to the storefront is often the simpler and more economical choice. When you cannot leave, or you have several keys to cut and the lock itself is the reference, a visit makes more sense.
What we can cut on site depends on the key. Standard house and deadbolt keys are the easiest. Restricted keys, some high-security profiles, and keys that need factory authorization may need to be handled at the storefront or through the manufacturer. We will tell you which category yours falls into on the first call. If you want to understand how our vans work in general, see our page on mobile locksmith service.
Why call Wilshire Lock & Key for your keys?
Key work is quiet, careful work, and the details are what separate a copy that works from one that does not. Here is what we can honestly say about how we operate.
- We have been in business since 1987 and serve 140 cities across Los Angeles and Ventura counties.
- We have a real storefront at 10740 Wilshire Blvd in Los Angeles, CA 90024, plus mobile vans. You are dealing with one company, not a dispatch service that passes your job to whoever is free.
- David, the owner and lead technician, oversees the work and stands behind how we do it.
- Our phone, (213) 577-1366, is answered 24 hours a day, 7 days a week, year-round, so you can ask what is possible at any hour.
- We say plainly when a key is restricted, when an original is too worn to trust, or when a lock is the real problem.
What should you ask any locksmith before handing over a key?
California requires locksmith companies to hold a BSIS LCO license, issued through the Bureau of Security and Investigative Services. Ask any locksmith for it before you hand over keys, especially for a building, an office, or a rental. It is a fair question, and a good company will not mind it.
Also ask who will cut the key, where it will be cut, and whether the blank matches your lock exactly. If a restricted or controlled key is involved, ask what authorization is needed. These questions take a minute and tell you quickly whether the person on the other end knows the trade.
Frequently asked questions
Can you copy a key stamped Do Not Duplicate?
The stamp does not physically prevent copying, but we treat it as a flag. For keys that belong to a business, a building, or a master key system, we ask who is authorized before cutting. For restricted keyways, we follow the manufacturer's rules and tell you honestly if authorization or a factory request is needed.
Do I need to bring the original key?
A good original is the best starting point, and it is usually what we copy from. If you have lost every key to a lock, a copy is not possible, and the answer may be cutting by code if that is available or rekeying the lock. Call (213) 577-1366 and describe your situation.
How long does key duplication take?
A standard house key copy is a short job. Specialty keys, restricted keys, and worn originals take longer because they need more setup and checking. We tell you what to expect when you call instead of promising a fixed timeframe.
Can you duplicate mailbox keys in Duarte?
Yes, as long as we can match the blank to the lock. Mailbox keys are small and easy to misplace, so bringing the original or the box number helps. If the mailbox lock is gone or damaged, that is a replacement job, not a copy.
Will you come to my home in Duarte to copy keys?
Often, yes. Our mobile vans serve Duarte, which is about 33 miles from our Westwood storefront. For a single standard spare, bringing the key to the storefront is usually the more economical route, and some key types must be cut there or through a manufacturer. We confirm which applies when you call.
Why does my new copy stick in the lock?
It can be a wrong or near-match blank, a burr from the cut, a worn original, or a lock full of grit. In Duarte, wind-blown dust from the foothills and heat expansion on sun-exposed doors can make a lock stiff. We test copies in the actual lock when possible and recut if needed.
Can you copy a car key?
That depends on the vehicle, and we do not assume. Some car keys are simple cuts, while others involve electronics that must be programmed, and a few cases may be dealer-only. We confirm by VIN and in person before telling you what can be done.
Can you make a duplicate deadbolt key if the deadbolt uses a different key than the knob?
Yes. Deadbolts often have their own keyway, so we match each lock separately. If your whole house is keyed alike, one key opens everything and copies are simpler. We check this before cutting.
How many spare keys should I have made?
Enough that you are never down to one, but not so many that you lose track of who has what. For most households, a spare for a trusted person plus one for yourself is sensible. For rentals and offices, we suggest keeping a simple written record of who holds each key.
More locksmith help in Duarte
Key Duplication near Duarte
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.
