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Crenshaw Lock

Commercial Door Hardware in Diamond Bar · 24/7 mobile

Commercial Door Hardware in Diamond Bar, California

Crenshaw Lock Company provides mobile commercial door hardware repair and replacement in Diamond Bar, California, including storefront, aluminum-frame and mortise hardware. We are available 24/7 and come to your business. Call (323) 997-8867 to describe the door and get a tech headed your way.

  • 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
Aluminum storefront door with mortise lock and pull handle
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Commercial doors in Diamond Bar work hard. Most of the business space here is strip centers and office parks near the SR-57/SR-60 interchange, and the doors in them are opened hundreds of times a day. Aluminum-frame storefront doors, mortise lock bodies, panic hardware, closers and thumb-turn cylinders all wear out, and the failure usually shows up at the worst moment: a key snaps, a latch stops catching, or a door will not close all the way at night.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and owner and lead tech David Shar has spent decades working on this kind of hardware. We are fully mobile. There is no storefront to visit, so everything happens at your door, whether that is a suite on Diamond Bar Blvd, a unit in a plaza near Grand Ave, or an office building off Golden Springs Dr.

This page explains how a commercial hardware call works, what affects the cost, and what is specific to working in Diamond Bar. If a door is not securing your space right now, call (323) 997-8867 at any hour.

How it works in Diamond Bar

  1. 1

    Describe the door and the problem

    When you call, tell us what kind of door it is (aluminum storefront, hollow metal, wood), what the hardware does or fails to do, and whether the space is currently secure. Details like a broken key in the cylinder, a latch that sticks, or a door that will not close help us bring the right parts.

  2. 2

    On-site inspection

    We examine the lock or exit device, the strike, the frame alignment and the closer. Many hardware complaints are really alignment or strike problems, so we check the whole door rather than just swapping the part that is easiest to sell.

  3. 3

    Extraction, repair or replacement options

    If a key is broken in an aluminum-storefront cylinder, we extract it and tell you whether the cylinder can be reused. We then explain whether repair or replacement makes more sense for mortise bodies, latches, pull handles, panic devices or closers.

  4. 4

    Fitting and rekeying

    New hardware is fitted to the existing door prep wherever possible, which keeps the work neat on narrow aluminum stiles. We can rekey or replace cylinders so that lost, broken or former-employee keys no longer work.

  5. 5

    Testing and handoff

    We cycle the door from both sides, check latching with the door fully closed, and confirm that keys work smoothly. You get working keys and a plain explanation of what was done, so the door is secure before we leave.

Need commercial door hardware in Diamond Bar?

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

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What affects the price

  • The type of hardware involved: a standard storefront cylinder is a different job than a mortise lock body, panic device or heavy-duty closer.
  • Door and frame material, since narrow aluminum stiles limit which locks fit and can need specific parts.
  • Whether the work is a repair of existing hardware or a full replacement, including how many doors are affected.
  • Key complications such as a broken key, a seized cylinder or a lock that has been forced.
  • Rekeying needs, including how many cylinders and whether keys must match an existing system.
  • Time of day and urgency, since after-hours emergency service differs from a scheduled visit.

Why Diamond Bar chooses us

  • Fully mobile service: the work is done at your door with parts carried to the job, and there is no shop visit involved.
  • Available 24/7, which matters for businesses that discover a broken lock or unsecured door after closing.
  • Operating since 1987 under owner and lead tech David Shar, with long experience on storefront and mortise hardware.
  • We diagnose the whole door, including strike, alignment and closer, rather than replacing parts that are not actually the problem.
  • We explain repair versus replacement plainly and let you decide, without pressure.
  • Rekeying options so lost or unaccounted-for keys stop being a security concern for your suite.

Commercial Door Hardware across Diamond Bar

Diamond Bar is a hillside suburb, and its commercial space reflects that: strip centers, small office parks and plazas such as Diamond Hills Plaza, clustered near the SR-57/SR-60 interchange at Grand Avenue and along Diamond Bar Blvd. Tenants in ZIP 91765 and 91789 often have glass-and-aluminum entries with narrow-stile hardware, which is exactly where broken keys and worn latches show up. After-hours calls are common, such as a tenant near the interchange who snaps a key in a storefront lock at closing.

Business owners here often live nearby, in places like Pathfinder, the Sunset Crossing area, Summitridge or The Country Estates. We keep that in mind when scheduling, since a lock problem at the office can come up in the middle of a normal evening at home. Our mobile setup means we come to the property, whether it sits along Golden Springs Dr or tucked behind a plaza off Diamond Bar Blvd.

We also see facilities near community spots like Diamond Bar Center, Sycamore Canyon Park and the Diamond Bar Golf Course, where doors take steady public use. Heavy traffic wears closers, latches and pull hardware faster, and we can service them on site. Call (323) 997-8867 any time.

Locked out or need a locksmith now?

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Other Diamond Bar locksmith services

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

Commercial Door Hardware in Diamond Bar — FAQs

Can you replace hardware on an aluminum storefront door in Diamond Bar?
Yes. We repair and replace hardware on aluminum-frame storefront doors, including cylinders, latches, pull handles and closers. Call (323) 997-8867 and describe the door so we can bring suitable parts.
A key broke in my office door lock after hours. What should I do?
Do not try to dig it out, which can damage the cylinder. Call (323) 997-8867. We are available 24/7, can extract the broken key on site and fit a new cylinder if needed.
Do you work on mortise locks?
Yes. We service mortise lock bodies, including repair, cylinder replacement and rekeying. We inspect the whole door first so we only replace what is actually failing.
Do I need a new lock or can the existing hardware be repaired?
It depends on wear, damage and parts availability. We inspect it and explain both options honestly, and often a strike adjustment or cylinder swap solves the problem without full replacement.
Can you rekey my suite after an employee leaves?
Yes. Rekeying makes old keys stop working without always replacing the hardware. We can do it on site, usually in the same visit as other door repairs.
Do you have a shop I can visit?
No. Crenshaw Lock Company is fully mobile, so we come to your business anywhere in Diamond Bar, including both 91765 and 91789.
Do you handle closers and panic hardware too?
Yes. Doors that do not close or latch fully are a security problem, and we service closers and exit devices alongside locks. Call (323) 997-8867 to discuss your door.
How is the price determined?
Cost depends on the type of hardware, door material, repair versus replacement, key complications, rekeying needs and the time of the call. We explain the scope before starting work.
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