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(323) 997-8867
Crenshaw Lock

Key Duplication in Walnut · 24/7 mobile

Key Duplication in Walnut, California

Crenshaw Lock Company provides mobile key duplication in Walnut, California, cutting and copying house, office, mailbox and restricted keys at your location. We are available 24/7 and have no storefront to visit, because we come to you. Call (323) 997-8867 to talk through what you need copied.

  • Mobile to your Walnut 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
Open now(323) 997-8867

Most people think of key duplication as a quick errand: drive to a hardware counter, wait, and hope the copy works. In Walnut, that errand often means a drive along Valley Blvd or Lemon Ave, and plenty of keys here do not fit the standard counter process at all. Gated-community fobs, restricted-keyway deadbolts, barn and driveway gate padlocks, and mailbox keys all need more care than a generic blank and a fast grinder.

Crenshaw Lock Company is fully mobile. We bring the key-cutting equipment to your home, office or property in Walnut and make the copies there, so you can test each one in the lock it is meant for before we leave. That matters because a copy that looks right but binds in the door is only a half-finished job. Testing on site lets us adjust the cut or replace the blank right away.

The business has served Greater Los Angeles and Ventura County since 1987, and David Shar, the owner and lead technician, built it on practical, honest work. Whether you need a spare for a teenager heading to Mt. San Antonio College, extra keys for a rental, or copies for a small office, we explain what is possible and what is not. Some keys can be duplicated freely, some require proof of authorization, and some are better replaced with a rekey. We will tell you which applies to yours.

How it works in Walnut

  1. 1

    Tell us what you are copying

    Call (323) 997-8867 and describe the key: house, office, mailbox, padlock, gate or restricted. Mention any stamping on the head, such as a brand name or the words Do Not Duplicate. That helps us bring the right blanks and tools.

  2. 2

    We come to your Walnut location

    Because we are mobile and available 24/7, you do not need to leave your home, office or property. We arrive with the key-cutting equipment and a range of common and specialty blanks.

  3. 3

    Inspect the original

    We check the original key for wear. A heavily worn key makes a poor master for a copy, and a copy of a copy can drift out of spec. If the original is worn, we may cut by the lock's code or from the lock itself where possible.

  4. 4

    Cut and finish each copy

    We match the correct blank to the keyway, cut the copy, and remove burrs so it enters and turns smoothly without scratching up the lock or wearing it down.

  5. 5

    Test in the actual lock

    Every copy is tried in the lock it is meant to operate, usually several times. If it sticks or turns roughly, we recut or replace it before you pay for it.

  6. 6

    Discuss restricted and security options

    For restricted keys, we confirm authorization first. If you have lost track of who holds copies, we can talk through rekeying so that old keys stop working.

Need key duplication in Walnut?

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 is a simpler job than a high-security, dimple or restricted-keyway key that needs special blanks and equipment.
  • Restricted-key authorization: protected keyways require verification, and the blanks themselves are controlled, which affects the work involved.
  • How many copies you need: a single spare differs from a set for a household, a rental or a small office.
  • Condition of the original: a worn or damaged key may need to be cut by code or from the lock, which takes more time than a straight copy.
  • Special hardware: gate locks, barn padlocks, mailbox cluster keys and key-fob or smart-lock credentials each involve different parts and methods.
  • Time and location of the call: after-hours service and the distance to your property in Walnut can influence the final quote, which we explain before starting.

Why Walnut chooses us

  • Fully mobile: we cut keys at your door, so there is no counter, no queue and no drive across the San Gabriel Valley.
  • Testing before we leave: each copy is tried in your real lock, so you know it works before the job is finished.
  • Handling of unusual hardware: we work with gated-community access, barn and driveway gate locks on hillside properties, mailbox keys and restricted systems, not just standard house keys.
  • Open and honest about limits: if a key cannot or should not be copied, or a rekey makes more sense, we say so instead of selling you something unnecessary.
  • Available 24/7: needing a spare after a lockout at night or on a weekend does not mean waiting for store hours.
  • Experience since 1987: David Shar and the team have decades of local work behind the way we judge worn keys and tricky blanks.

Key Duplication across Walnut

Walnut sits between the San Jose Hills and the Puente Hills, and its housing reflects that. Much of the city is 1970s and 80s single-family tract housing on generous lots, with newer custom homes mixed in. In Snow Creek, the gated community, residents often juggle front-door keys, gate credentials and sometimes smart locks, so a request to copy a key can quickly turn into a conversation about who has access. In Walnut Heights, the hillside lots and semi-rural feel mean side gates, storage doors and sometimes barn or equestrian hardware that need their own keys.

In ZIP code 91789, which covers much of the city, we commonly see requests for spare house keys, extra deadbolt copies for family members, and mailbox keys that have gone missing. Over in 91788, residents and small businesses are just as likely to need duplicate office keys or copies for a shared property. Wherever you are, we come to you and cut the key on the spot.

The Mt. San Antonio College area brings its own pattern. Students, staff and commuters travelling along Grand Ave, Amar Rd and Nogales St sometimes need a spare for an apartment, a locker, a vehicle-adjacent building or a shared house. With SR-60 and SR-57 close by, many Walnut residents commute, and a spare key left with a trusted neighbor or relative is the simplest insurance. Whether you are near Suzanne Park, Creekside Park or up in the hills, call (323) 997-8867 and we will bring the cutting equipment to you.

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 Walnut locksmith services

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

Key Duplication in Walnut — FAQs

Do you really cut keys at my home in Walnut?
Yes. We are fully mobile with no storefront. We bring key-cutting equipment to your home, office or property and make copies on site. Call (323) 997-8867 to describe what you need.
Can you copy a key stamped Do Not Duplicate?
That stamp is not always a legal barrier, but we treat it carefully. We may ask about your authorization to have the key copied, and in some cases suggest rekeying or a different approach.
Can you duplicate restricted keys?
Yes, where authorization can be verified. Restricted keyways use controlled blanks, so we confirm you are permitted to have copies made before we cut. Call (323) 997-8867 if you are unsure what type you have.
Do you handle keys for gated communities like Snow Creek?
We can copy the physical keys used at a home in a gated community, and we can talk through smart-lock or gate-related hardware. Access cards or community-issued credentials usually have to come from the association.
Can you copy a barn or driveway gate lock key?
Generally yes. Many hillside and equestrian properties in Walnut use padlocks and gate hardware that take standard or specialty keys. Tell us the brand if you can, and we will bring suitable blanks.
What if my original key is badly worn?
A worn original can produce a poor copy. We inspect it first, and if needed we may cut by code or work from the lock to produce a cleaner key. We test every copy before finishing.
Can you make mailbox keys?
Yes, we can make duplicate mailbox keys on location in many cases. Bring any information you have about the box type. If a lock is missing its key entirely, we can discuss options. Call (323) 997-8867.
Are you available outside normal business hours?
Yes. We operate 24/7, so evening, weekend and holiday requests are welcome. Because we are mobile, we come to your location in Walnut rather than asking you to visit a shop.
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