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(323) 997-8867
Crenshaw Lock

Commercial Locksmith in Diamond Bar · 24/7 mobile

Commercial Locksmith in Diamond Bar, California

Crenshaw Lock Company provides 24/7 mobile commercial locksmith service in Diamond Bar, California, for offices, retail suites, warehouses and industrial sites. We come to your business for lockouts, broken keys, rekeying and hardware upgrades. Call (323) 997-8867 any hour, day or night.

  • Mobile to your Diamond Bar location
  • Available 24/7
  • Price quoted before we start
Call (323) 997-8867or tap to call — we answer 24/7
Glass office entrance doors with stainless steel hardware at dusk
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Diamond Bar is mostly a hillside residential city, so its commercial side is concentrated and practical: strip centers, professional office suites and small business parks clustered near the SR-57/SR-60 interchange at Grand Avenue, along Diamond Bar Blvd and out toward Golden Springs Dr. Those buildings tend to share a few things: aluminum storefront doors, commercial cylinders that have seen years of daily use, and tenants who need to be able to open the doors on Monday morning no matter what happened over the weekend.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, led by owner and lead technician David Shar. We are fully mobile. There is no storefront to visit; the shop comes to you in a service vehicle, which means we can work on your door at your site, whether it is a Tuesday afternoon or the middle of the night.

Commercial work is different from residential work. Keys get copied by many people, employees leave, tenants turn over, and a single door may need to fit into a master key system. We approach each job by first understanding how your business uses the door, then recommending the least disruptive fix that actually solves the problem. Sometimes that is extracting a broken key and replacing a cylinder. Sometimes it is rekeying every lock in a suite so that former staff no longer have access.

How it works in Diamond Bar

  1. 1

    Call and describe the situation

    Call (323) 997-8867 and tell us what kind of door, lock or system is involved, and whether you are locked out, dealing with a broken key, or planning an upgrade. Because we operate 24/7, you can reach us after hours when a problem cannot wait for business hours.

  2. 2

    Confirm who is authorized

    Before we open or change anything, we ask you to show you are the owner, manager or an authorized tenant of the space. For suites in a shared center, that may mean confirming with property management. This protects you and your neighbors.

  3. 3

    Assess the hardware on site

    Our technician comes to your location and looks at the door, frame and lock. Aluminum storefront doors, glass doors with narrow stiles, rear steel doors and roll-up gates each call for different tools and hardware, so we check what you actually have before suggesting a fix.

  4. 4

    Open, extract or repair

    We get you back in with methods that aim to protect the door and frame. For a broken key, we extract the fragment and test the cylinder. If it is worn or damaged, we explain whether replacement makes more sense than repair.

  5. 5

    Rekey, replace or upgrade

    Once the door is secure, we can rekey cylinders so old keys stop working, install new commercial-grade locks, add panic or exit hardware, or set up keypad and access-control options. We walk you through choices in plain language.

  6. 6

    Test and hand over keys

    We test every lock repeatedly from both sides, hand over the new keys, and note which doors were changed so you can keep a clear record for your business.

Need commercial locksmith in Diamond Bar?

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 service: a lockout, key extraction, rekey, hardware replacement or access-control installation each involve different labor and parts.
  • The hardware itself: standard commercial cylinders, high-security cylinders, panic bars and electronic keypads vary widely in cost.
  • How many doors or cylinders are involved, and whether they need to be keyed alike or fit an existing master key system.
  • The time of the call: after-hours, weekend and holiday service differs from a scheduled daytime visit.
  • The condition of the door and frame, since damaged aluminum storefronts or warped steel doors may need extra work before new hardware works properly.
  • Your location within our service area and the access conditions at the site.

Why Diamond Bar chooses us

  • Fully mobile, 24/7 service: we come to your business at any hour rather than asking you to bring anything to a shop.
  • In business since 1987, with owner David Shar leading the work, so experience with older commercial hardware is built in.
  • We are comfortable with aluminum storefront locks, which are common in Diamond Bar strip centers and office suites and are easy to damage if handled carelessly.
  • We explain options honestly, including when a repair is enough and replacement is unnecessary.
  • We handle rekeying for tenant turnover and staff changes, so a new key set is ready without replacing every lock.
  • We work around your operation, aiming to secure the door quickly so your business can get back to normal.

Commercial Locksmith across Diamond Bar

Diamond Bar's commercial properties sit mainly around the SR-57/SR-60 interchange at Grand Avenue, with additional shops and offices along Diamond Bar Blvd and Golden Springs Dr. In ZIP code 91765 and 91789, that means strip centers and office parks rather than large industrial campuses, and a locksmith who understands that mix is useful. A tenant in an office suite near the interchange who snaps a key in an aluminum-storefront lock after hours is a typical call: the key has to come out cleanly and the cylinder has to be tested or replaced so the suite is secure before morning.

Our commercial customers often have homes and ties across the city too. Business owners who live in The Country Estates, the guard-gated hillside enclave, or in Pathfinder, tend to expect careful, tidy work, and we bring that to their shops and offices as well. The same attention to hardware finish that matters on a custom hillside entry matters on a professional office door. We also serve businesses near the Sunset Crossing area and in the Summitridge area, where small offices and service businesses operate close to residential streets.

Whether your business is near Diamond Hills Plaza, close to Diamond Bar Center, or tucked off a side street near Sycamore Canyon Park or the Diamond Bar Golf Course, call (323) 997-8867. We are mobile only, so there is no counter to visit. We come to you, day or night.

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 Diamond Bar locksmith services

See all of our Diamond Bar services, or our citywide commercial locksmith page.

Commercial Locksmith in Diamond Bar — FAQs

Do you offer commercial locksmith service in Diamond Bar at night?
Yes. Crenshaw Lock Company is available 24/7 and fully mobile. Call (323) 997-8867 at any hour and we will talk through your situation and come to your Diamond Bar business.
Can you remove a broken key from an aluminum storefront lock?
Yes. Broken keys in storefront locks are a common call. We extract the fragment, test the cylinder, and replace it if it is worn or damaged so your door secures properly.
Can you rekey my office after an employee leaves?
Yes. Rekeying changes the internal pins so old keys no longer work, usually without replacing the hardware. Call (323) 997-8867 to discuss how many doors you need changed.
Do you have a shop I can visit?
No. We are a mobile-only business with no storefront. Our technician comes to your location with the tools and common parts for the job.
Can you install keypad or access-control locks for a small business?
Yes. We can install electronic keypad locks and discuss access-control options that suit an office, shop or warehouse, including how they fit with your existing doors.
How is commercial locksmith pricing determined?
Pricing depends on the service, the hardware, the number of doors, the time of day and the condition of the door and frame. Call (323) 997-8867 and describe the job so we can explain what applies.
Do you work on panic bars and exit hardware?
Yes. We can repair, adjust or replace panic bars and other exit devices, which matters for doors that must open easily from inside while staying secure from outside.
Will I need to prove I'm authorized to have a door opened?
Yes. We confirm that you are the owner, manager or authorized tenant before opening or changing locks. In shared centers, we may ask you to verify with property management.
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