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Crenshaw Lock

Master Key System in Vernon · 24/7 mobile

Master Key System Design and Installation in Vernon, CA

Crenshaw Lock Company designs and installs master key systems and restricted-key programs with key control for Vernon, California businesses. We are a fully mobile locksmith available 24/7, and we come to your plant or warehouse. Call (323) 997-8867 to plan a system that fits your facility.

  • Mobile to your Vernon location
  • Available 24/7
  • Price quoted before we start
Call (323) 997-8867or tap to call — we answer 24/7
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A master key system lets the right people open the right doors with the fewest keys possible. In a city like Vernon, where the economy is built on large plants, cold-storage buildings, and warehouse yards, that matters more than almost anywhere. A maintenance lead may need every door, a shift supervisor only a department, and a contractor just one room for one week. Without a plan, the usual result is a drawer of unmarked keys, nobody sure who holds what, and a single lost key that forces a scramble.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and owner and lead tech David Shar has worked on the kind of commercial hardware common in Vernon: commercial mortise locks, exit and panic devices, high-security padlocks on dock doors and yard gates, and the large systems that sprawling plants depend on. We design master key systems with a clear hierarchy, and we can add restricted keyways so keys cannot be casually copied at a hardware counter.

We are mobile only. There is no storefront to visit. We come to you, walk the building, and work around your production schedule. Because many Vernon facilities run around the clock, we are available 24/7 and can plan installation work for off-hours so food lines, loading docks, and shipping operations are disrupted as little as possible.

How it works in Vernon

  1. 1

    Walk-through and door survey

    We visit your facility and list every opening that needs a lock: offices, mechanical rooms, cold-storage doors, dock doors, gates, cabinets, and more. We note the existing hardware, its condition, and which doors are life-safety egress, since panic and exit devices need special care.

  2. 2

    Access hierarchy planning

    Together we decide who needs access to what. We map out levels such as a grand master for ownership or facilities, masters for departments, and individual keys for single doors or areas. We also discuss shift staff, contractors, and vendors so the plan matches how your plant actually operates.

  3. 3

    Choosing the keyway and key control level

    We recommend a keyway and level of key control based on your risk. A restricted keyway means duplicates are made only with authorization, which suits food-safety, high-value inventory, and shared industrial buildings. We explain the tradeoffs so you can decide.

  4. 4

    Pinning, installation, and rekeying

    We rekey or replace cylinders and pin them to the planned hierarchy. Where existing hardware is worn, we recommend replacement. We can schedule work in phases or after hours so production, cold lines, and shipping keep moving.

  5. 5

    Testing and documentation

    Every lock is tested with each key level to confirm it opens what it should and nothing else. We give you a key schedule showing which key opens which door, which is the foundation of real key control.

  6. 6

    Key issuing and future changes

    We help you set up a key log and issuing process. When staff change, a key goes missing, or you add a building or yard, we can extend or re-pin the system without starting over.

Need master key system in Vernon?

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

Call (323) 997-8867

What affects the price

  • Number of doors, gates, and cylinders included in the system, and how many are new versus rekeyed
  • Keyway and key control level, since restricted and patent-protected systems cost differently than standard keyways
  • Condition and type of existing hardware, such as older mortise locks, panic devices, or dock padlocks that may need repair or replacement
  • Number of key levels and the quantity of keys needed for each level
  • Scheduling complexity, including after-hours work, phased installation, and working around cold-storage or production lines
  • Whether the system must integrate with or back up existing keypad or card access control

Why Vernon chooses us

  • Fully mobile service, so we come to your plant, dock, or yard instead of asking you to bring hardware anywhere
  • Available 24/7, which suits Vernon facilities that run overnight shifts and cannot stop for a daytime appointment
  • Business in operation since 1987, with owner David Shar personally involved in the work
  • Experience with industrial hardware: mortise locks, exit and panic devices, high-security padlocks, and large multi-building key plans
  • Clear written key schedules so you know exactly who can open what
  • Honest recommendations, including telling you when existing hardware should be kept and when it is not worth rekeying

Master Key System across Vernon

Vernon is one of the most industrial cities in California, and its buildings reflect that. Around the industrial core near Soto Street, Santa Fe Avenue, and Alameda Street, you find early brick plants alongside mid-century tilt-up concrete buildings, many used for food processing, cold storage, metalworking, and manufacturing. Landmarks such as the Farmer John plant and mural are a reminder of how long large-scale production has anchored the area. Buildings of this kind often have decades of accumulated keys and mixed hardware, which is exactly where a master key system pays off.

We work throughout Vernon, including the Central Manufacturing District and the Leonis Boulevard and City Hall district, and we serve businesses in ZIP code 90058. Whether your facility sits near the rail yards, along the Los Angeles River, or just off the I-710, Atlantic Boulevard, Bandini Boulevard, or Slauson Avenue, we come to you. Typical Vernon projects include re-keying an office wing after a lost master key without halting a cold line, replacing loading-dock padlocks and hasps after a break-in attempt, and setting up a mechanical backup when a keypad on a yard gate fails.

Because Vernon has very few residents and a heavy daytime workforce, access control here is mostly about employees, drivers, contractors, and vendors moving in and out of large sites. A well-designed system keeps that traffic organized. Call (323) 997-8867 to talk through your building.

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Other Vernon locksmith services

See all of our Vernon services, or our citywide master key system page.

Master Key System in Vernon — FAQs

What is a master key system?
It is a set of locks and keys arranged in levels so one key can open many doors while others open only specific ones. A plant might have a grand master for facilities, department masters, and single-door keys for individual rooms.
Can you add a master key system to locks I already have?
Often yes. Many commercial cylinders can be rekeyed into a master system, though worn or mismatched hardware may need replacement. We survey the doors first and tell you honestly what can be reused. Call (323) 997-8867 to schedule a walk-through.
We lost a master key at our Vernon plant. What should we do?
A lost master key is a security risk, so the safest fix is rekeying the affected locks and reissuing keys. We can plan the work around your operation, including after hours, to avoid shutting down production. Call (323) 997-8867 any time, day or night.
What is a restricted keyway and do I need one?
A restricted keyway uses blanks that are not freely sold, so duplicates require authorization. It is useful for food-safety areas, valuable inventory, and facilities with many contractors. We can explain whether it fits your risk and budget.
Can you work overnight so our line keeps running?
Yes. We are available 24/7 and can phase installation so critical areas stay secure and operating. Planning ahead lets us schedule around shifts, cold storage, and shipping.
Do you handle dock padlocks, hasps, and yard gates too?
Yes. We work with high-security padlocks, hasps, and gate hardware, and can include them in the key plan so they are covered by the same key control approach.
What if our keypad or card access fails?
We can install an interim mechanical lock so the site stays secure while the electronic system is repaired or replaced. Call (323) 997-8867 and tell us what is failing.
Do you have a shop in Vernon I can visit?
No. We are a fully mobile locksmith with no storefront. We come to your facility, which also lets us see your doors in person and plan accurately.
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