Key Duplication in San Marino, CA

Why does a good key copy matter more than it seems?

Most people think of key copying as a thirty-second errand. Hand over a key, get back a key. The trouble is that a copy which almost works is worse than no copy at all. A spare house key that sticks, turns only if you jiggle it, or works on Tuesday and not on Friday tends to fail at exactly the wrong moment, usually at night, usually with your hands full.

Key duplication is really a measurement job. A key opens a lock because tiny cuts of specific depths and spacing lift each pin to the right height. If the copy is off by a hair, the pins sit slightly wrong. The lock may still open for a while, but the extra friction wears both the new key and the cylinder. We cut spare house keys, duplicate deadbolt keys, and copy office and mailbox keys with that in mind: the goal is a key that feels like the original on the first turn and keeps feeling that way.

What makes copying keys on San Marino's older homes different?

San Marino is almost entirely single-family, and much of it was built in the 1920s and 1930s in Spanish Colonial Revival, Tudor, Monterey, and other period styles. Many of those homes still carry their original mortise locksets and period door hardware. Keys for that kind of hardware are often decades old, and decades of use leave them worn. A key that has turned thousands of times has softened edges and shallower cuts than when it was new.

That matters because copying a worn key faithfully reproduces the wear. Copy that copy, and the error compounds. If your only key to a period front door is an old one, we look at it first, check how it behaves in the lock, and talk through whether a straight duplicate is sensible or whether the lock itself needs attention before you start making spares.

There is also the door. Summer in this inland part of the San Gabriel Valley is hot and dry, and heat can swell wood doors and nudge older mortise hardware out of alignment. A key that suddenly feels stiff in July is sometimes a door problem, not a key problem. We would rather tell you that than cut you a third key for a lock that needs adjusting. Salt-air corrosion is not a factor this far inland, so the wear we see is mostly from age and use.

How do we duplicate a key, step by step?

The process is simple on purpose. Skipping steps is how bad copies get made.

1. Identify the key. We check the keyway, the brand stamping if there is one, and whether it is a standard key, a high security key, or a restricted one. This decides everything that follows.
2. Inspect the original. We look for wear, bends, cracks, and rounded cuts. If the key is badly worn we say so, and may suggest working from a better reference or rekeying instead.
3. Match the blank. The blank has to fit the same keyway and have the right shoulder and length, or the copy will not seat properly in the lock.
4. Cut the copy. We trace the original's cuts onto the blank, then remove burrs so the new key does not shed metal shavings into your cylinder.
5. Test in the actual lock. A copy is not finished until it turns the lock it was made for, smoothly, with the door in its normal position. We test, and if it binds, we recut or adjust.
6. Label and advise. We suggest which copy should live where, and, if a lock is behaving oddly, tell you plainly what we noticed.

Which keys can we copy?

Different keys call for different handling. Here is how the common categories break down, and where the limits are.

• House key copy and spare house key: the everyday job. Front door, back door, garage side door. We can cut extra copies so family members, a house sitter, or a trusted neighbor each have their own rather than passing one around.
• Duplicate deadbolt key: deadbolts often use a different keyway than the knob or handle set on the same door. We match each one, and we test the deadbolt fully thrown, since a key that turns in the open position can still bind under load.
• Apartment key copy: San Marino's zoning allows essentially no apartment development, so this is rare for local addresses. If you manage or visit a unit somewhere else, we serve 140 cities across Los Angeles and Ventura counties, and your lease terms may govern who is allowed to copy the key.
• Office key duplication and commercial key duplication: suite doors, storage rooms, desk and cabinet locks, and shop doors. For anything tied to a larger keying scheme, see the section below on restricted keys.
• Mailbox key duplication: keys to private mailboxes we can copy. Locks owned by the postal service are controlled by the postal service, and we will not pretend otherwise. If a private mailbox lock is worn or lost its keys, mailbox lock replacement may be the better route.
• High security key duplication: these keys use tighter tolerances and often more complex cuts. Some can be copied with the right equipment, some only with authorization from the manufacturer. We confirm which category your key falls into before promising anything. More on this in our high security locks page.
• Restricted key duplication: keys marked or controlled to prevent casual copying. Whether we can copy one depends on the system. Many require proof of authorization, such as a card or account from the property owner. Where a key is dealer-only or authorization-only, we tell you that directly instead of cutting something that will not work.

What affects the cost of key duplication?

We do not quote numbers in a web page, because the honest answer is that it depends on the key. Here is what moves the cost, so you know what to expect when you call.

The biggest factor is the type of key. A standard single-sided house key is the lighter-cost end of the range. Keys with unusual keyways, high security profiles, or restricted blanks cost more because the blanks are harder to source and the cutting takes more care and sometimes different equipment.

Next is how many copies you need and in what condition the original is. A clean original is straightforward. A worn or damaged original may take extra time, or call for working from a better reference.

Location and timing also play a role. Bringing the key to our Westwood storefront is usually the more economical route, since there is no travel involved. A mobile visit, or a call in the middle of the night, adds the cost of getting a van to you at that hour. We tell you what is likely to apply when you call, before anyone drives out.

Can you come to me for mobile key duplication?

Yes, in many cases. We run mobile service vans alongside our storefront at 10740 Wilshire Blvd in Westwood, and San Marino is roughly 22 miles from our base. Plenty of people in the area would rather not leave a home or office, so we come to them when the job suits it.

Not every key is a good fit for a roadside or doorstep cut. Standard house and deadbolt keys usually are. High security and restricted keys may need equipment or authorization that is better handled at the storefront. When you call (213) 577-1366, describe the key, read us any stamping on it, and we will tell you whether we can do it on site or whether a short trip to Wilshire Boulevard makes more sense. Our page on mobile locksmith service explains how our vans work in general.

Key duplication around San Marino: Lacy Park, Huntington Drive, and Mission Street

San Marino's single ZIP code, 91108, covers a city of large lots and long-held family homes, and the way people here use keys reflects that. Here is how key duplication tends to show up in different corners of town.

Around the Lacy Park area and the estate streets nearby, the issue is usually age and quantity. Homes built in the 1920s and 1930s often have several exterior doors, each with its own original lockset, and over the decades keys get lost, loaned, or worn flat. A set of fresh, accurate copies for each door is a sensible job, and for original mortise hardware we like to inspect the lock first.

Along the Huntington Drive corridor, large fenced lots mean gates and side doors, and those locks see more weather and more use than a front door. Copying a gate or side-door key is routine, but a gate key that has gone stiff may be telling you the lock needs service. If so, we will point you toward gate lock repair rather than just cutting another key for a failing lock.

Near San Marino High School, the common scenario is a home sale. New owners often want every exterior door keyed the same and enough copies for everyone in the household. Duplicating the old keys is not the answer there, since previous owners and contractors may still hold copies. We cover that in the section below on when copying is not the right fix.

In the Mission Street business district, shopkeepers need spare keys for storefronts, back doors, and stock rooms, and sometimes a key for an employee who opens up. Commercial key duplication there is straightforward for standard keys, and we will say so if a key is marked as restricted. The Mission District, the Oak Knoll border area near Pasadena, and the neighborhood around El Molino Viejo are all covered by the same mobile service.

When is copying a key not the right fix?

Sometimes a copy solves the wrong problem. A few situations where we will suggest something else:

If you have just bought a home, or you have lost keys and do not know who found them, a copy gives one more person access. The better move is lock rekeying, which changes the lock so old keys stop working. We can then cut new keys to the new pattern.

If your key is cracked or a piece snapped off in the lock, do not try another copy. That is a broken key extraction job first, and cutting from a damaged key rarely gives a reliable result.

If you run a business or manage several doors and everybody carries a different key, the real fix is a master key system, so each person carries one key suited to their access. Copying keys one at a time will not give you that.

And if all you want is a clean spare for a lock that works well, a plain duplicate is exactly right. We would rather match the job to the need than sell you something bigger.

Why call Wilshire Lock & Key for key cutting?

We have been in business since 1987, and we are one company, not a dispatch service that passes your call to whoever is nearest. The person who answers the phone at (213) 577-1366, at any hour, is part of the company that will do the work. We have a storefront in Westwood and mobile vans, so you can bring a key in or have us come to you.

David, the owner and lead technician, oversees our work, and he cares about the small things that make a copy last: matching the blank correctly, deburring the cut, testing in the lock itself.

One more honest note. California requires locksmith companies to hold a BSIS LCO license, and you should ask any locksmith you hire for it, including us. A reputable company will not mind being asked. For broader home service beyond keys, our residential locksmith page lays out what we do.

More locksmith help in San Marino

• Change Locks in San Marino
• Deadbolt Installation in San Marino
• Gate Lock Repair in San Marino
• High Security Locks in San Marino
• Lock Installation in San Marino
• Lock Rekey in San Marino
• All services in San Marino

Key Duplication near San Marino

• Pasadena
• South Pasadena
• San Gabriel
• Alhambra
• Temple City
• Arcadia