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Crenshaw Lock

Key Duplication in Monrovia · 24/7 mobile

Key Duplication in Monrovia, California

Crenshaw Lock Company provides fully mobile key duplication in Monrovia, California, around the clock. We cut house, office, mailbox and restricted keys at your door, with no shop visit required. Call (323) 997-8867 any hour and describe the lock you need copied.

  • Mobile to your Monrovia location
  • Available 24/7
  • Price quoted before we start
Call (323) 997-8867or tap to call — we answer 24/7
Key cutting machine duplicating a brass key
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Most people think of key duplication as a quick stop at a hardware counter. In Monrovia, that picture often falls apart. Many homes here carry original hardware from the early 1900s, and the keys that fit those locks are not the common blanks hanging on a rack. A worn skeleton key, an old mortise key or a key that has already been copied from a copy can be tricky to reproduce well. We come to you, so the copy is cut and tested against the actual lock it has to work in.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and owner and lead technician David Shar built the business around mobile service. We have no storefront. Our work happens at your front door, your shop counter or your mailbox cluster, which means we can check how a key turns in the lock instead of guessing from a blank.

Whether you are a homeowner wanting spares for a family, a landlord managing several units, or a business owner who needs reliable keys for staff, we cut copies on location and test each one. If a key is restricted or stamped do not duplicate, we explain what is possible and what authorization may be needed, rather than cutting corners.

How it works in Monrovia

  1. 1

    Call and describe the key

    Phone (323) 997-8867 and tell us what you need copied: a house key, a mailbox key, an office key or something restricted. Details such as the brand stamped on the key, the age of the lock and how many copies you want help us arrive prepared.

  2. 2

    We come to your location

    Because we are fully mobile and available 24/7, we drive to your Monrovia home, shop or office. There is no counter to visit, and you do not have to leave the property to get spares made.

  3. 3

    Inspect the original key and lock

    Before cutting anything, we look at the key and the lock it operates. Worn keys can produce poor copies, so we check whether the original still works smoothly. On older Craftsman hardware, we also note whether the lock itself is due for service.

  4. 4

    Cut and finish the copies

    We cut the new keys to match, then deburr them so they slide in cleanly and do not shave the pins or wear the lock. For restricted keyways, we confirm the proper authorization process first.

  5. 5

    Test every copy in the lock

    Each new key is tried in the actual lock, several times, to confirm it turns easily and does not stick. If a copy is stiff or unreliable, we recut it rather than hand it over.

  6. 6

    Talk through next steps

    If a key is badly worn, if too many copies are floating around, or if a property just changed hands, we may suggest rekeying so only the keys in your hand will work. That is a suggestion, never a requirement.

Need key duplication in Monrovia?

24/7 Mobile Locksmith across Greater Los Angeles & Ventura County. We answer 24/7.

Call (323) 997-8867

What affects the price

  • The type of key: a standard house key differs from a high-security, restricted or specialty key that needs particular blanks or authorization.
  • The number of copies requested, since a single spare and a full set for a household or staff involve different amounts of work.
  • The condition of the original key, because a worn or previously copied key may need extra care or a different approach.
  • The kind of lock, such as an older mortise or rim lock versus a modern deadbolt, which affects the blank needed and the testing involved.
  • The time and location of the visit, including after-hours calls and properties with long driveways or gated access.
  • Whether the job is combined with other work like rekeying or lock repair during the same visit.

Why Monrovia chooses us

  • Fully mobile: we cut keys where the lock is, so each copy is tested against the real hardware instead of a counter display.
  • In business since 1987, with owner David Shar leading the work, so experience with older locks comes from years of hands-on service.
  • Comfortable with period hardware: we understand the mortise and rim locks common in early 20th-century Monrovia homes and aim to keep original doors intact.
  • Available 24/7, so a lost spare or a last-minute tenant move-in does not have to wait for business hours.
  • Honest about limits: restricted and do-not-duplicate keys are handled through proper authorization, and we tell you plainly when a copy is not a good idea.
  • No storefront overhead or pressure sales; we recommend rekeying only when it actually makes sense for the situation.

Key Duplication across Monrovia

Monrovia has an unusual mix of buildings, and key work here reflects it. In and around Old Town Monrovia, many Craftsman bungalows and Victorians still carry original mortise and rim hardware. Keys for those locks are often decades old, and a careful copy can save a vintage door from being drilled or replaced. We regularly think about situations like a bungalow just sold, where the new owner wants working spares and a plan for the original locks without losing the period character.

Along Myrtle Avenue, the walkable stretch of small shops and restaurants near the Aztec Hotel and Library Park, businesses often rely on locks of mixed ages. Extra keys for opening and closing staff, a back-door key for deliveries or a copy for a property manager are common requests, and we can cut them at the storefront in the 91016 area without anyone leaving work. Further north, hillside custom and mid-century homes above Foothill Boulevard, toward Monrovia Canyon Park and across the 91017 ZIP, often have long driveways, side-yard gates and several outbuildings, each with its own key. Cutting copies on site means we can match every gate and door in one visit.

If you live in Mayflower Village, commute from the Metro A Line station or work near Huntington Drive or Mountain Avenue, we come to wherever is convenient. Call (323) 997-8867 at any hour and we will talk you through what to expect.

Locked out or need a locksmith now?

24/7 Mobile Locksmith across Greater Los Angeles & Ventura County. We answer 24/7.

Call (323) 997-8867

Other Monrovia locksmith services

See all of our Monrovia services, or our citywide key duplication page.

Key Duplication in Monrovia — FAQs

Can you copy keys for older Craftsman homes in Monrovia?
Often yes. Many Old Town bungalows have original mortise and rim locks with older style keys. We inspect the key and lock on site, and if a clean copy is possible we cut it. Call (323) 997-8867 to describe what you have.
Do I have to bring the key to a shop?
No. Crenshaw Lock Company is fully mobile with no storefront. We come to your home, business or mailbox location in Monrovia and cut the copies there.
Are you available outside normal business hours?
Yes, we are available 24/7. If you need a spare key late at night or on a weekend, call (323) 997-8867 and we will arrange a visit.
Can you duplicate a key marked do not duplicate?
Those keys often belong to restricted or controlled systems. We do not bypass authorization. If you are the legitimate holder, we can explain the process for getting authorized copies.
Can you make copies of mailbox keys?
Yes, we cut mailbox keys on location. If you have lost every key to a cluster or individual box, let us know and we can discuss what options fit your situation.
What if my original key is worn out?
A worn key can produce a copy that sticks or fails. We check the original, and when it makes sense we may suggest rekeying the lock so we can cut fresh keys that work smoothly.
Can you cut keys for gates and outbuildings on a hillside property?
Yes. We come to the property and can handle the front door, side-yard gates, driveway gate locks and outbuildings in one visit, matching and testing each key where it is used.
How is the price of key duplication determined?
It depends on the key type, number of copies, condition of the original, the lock involved and the time and location of the visit. Call (323) 997-8867 and describe your situation so we can explain what applies.
DS

Reviewed by David Shar — Owner & Lead Technician

Crenshaw Lock Company has served Greater Los Angeles & Ventura County since 1987.

Last updated 2026-10-12.

Call (323) 997-8867 · Open 24/7