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Crenshaw Lock

Master Key System in Santa Fe Springs · 24/7 mobile

Master Key System in Santa Fe Springs, California

Crenshaw Lock Company designs and installs master-key and restricted-key systems with real key control for Santa Fe Springs warehouses, plants, and offices. We are fully mobile and available 24/7, and we come to your site. Call (323) 997-8867 to plan a system.

  • Mobile to your Santa Fe Springs 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 sounds simple: one key that opens many doors, and individual keys that open only some. In practice, it is a design problem. Who needs access to what, who must never have access to what, and what happens when someone leaves? In Santa Fe Springs, where warehouses, manufacturing plants, and distribution yards fill much of the map, those questions are daily realities rather than theory.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, led by owner and lead technician David Shar. We are a fully mobile operation with no storefront, so every consultation, installation, and rekey happens at your building, whether that is a unit off Telegraph Road or an office near Norwalk Boulevard.

A well-built system gives you a hierarchy: change keys for individual doors, sub-master keys for departments or shifts, and a grand master for management. Add a restricted keyway, such as Medeco or Mul-T-Lock, and key duplication is controlled too, so a key cannot be copied at a hardware store kiosk. The result is fewer keys in circulation, clearer accountability, and a much easier time when staff change.

How it works in Santa Fe Springs

  1. 1

    Walk the site and map the doors

    We come to your facility and list every opening: offices, tool cribs, server rooms, dock doors, roll-up doors, exit devices, and gates. We note the hardware already installed and what can be reused.

  2. 2

    Define who needs access to what

    Together we sketch the hierarchy: grand master, sub-masters by department or shift, and individual change keys. We talk through contractors, temporary staff, and sensitive rooms that should sit outside the master.

  3. 3

    Choose the keyway and level of control

    We recommend between a standard keyway and a restricted one such as Medeco or Mul-T-Lock, based on how tightly you need duplication controlled and how many locations share the system.

  4. 4

    Install and rekey on site

    We pin or replace cylinders at your building, leaving existing hardware in place where it is sound. Because we are mobile, work can be scheduled around shifts so operations are not disrupted.

  5. 5

    Test every door and every key

    Each key is checked against each lock it should and should not open. We also confirm that panic bars and exit devices still operate freely and meet code expectations.

  6. 6

    Document and plan for growth

    You receive a clear key schedule and guidance on issuing and recovering keys. Leaving room in the design means a new hire group or added tenant space can be added later without starting over.

Need master key system in Santa Fe Springs?

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What affects the price

  • The number of doors and cylinders in the system, since each one must be keyed to the hierarchy.
  • The keyway you select: standard keyways cost less to set up than patented restricted keyways with controlled duplication.
  • The depth of the hierarchy, such as how many sub-master levels and how many keys are needed at each level.
  • Whether existing locks and hardware can be rekeyed or whether some doors need replacement cylinders, mortise locks, or exit devices.
  • The scheduling of the work, including after-hours or between-shift installation that suits an active facility.
  • Whether you are building a new system or expanding an existing one, which depends on how much room the original design left.

Why Santa Fe Springs chooses us

  • Fully mobile: we do the survey, installation, and testing at your facility, with no storefront trip and no need to ship lock hardware anywhere.
  • Experience since 1987 with commercial hardware, including mortise locks, panic devices, and roll-up and overhead door locks.
  • We design the hierarchy around how your operation really runs, including shift groups, contractors, and sensitive rooms, instead of dropping in a generic scheme.
  • Restricted keyway options such as Medeco and Mul-T-Lock for sites that need controlled key duplication.
  • 24/7 availability, so a lockout or an urgent rekey after a staffing change does not have to wait for business hours.
  • We check exit devices during installation, so the system you are paying for does not leave a stuck panic bar as a code problem.

Master Key System across Santa Fe Springs

Santa Fe Springs is built around industry. The Santa Fe Springs Industrial District, especially along the Telegraph Road and Shoemaker Avenue corridor, is full of logistics tenants, manufacturers, and distribution yards. These sites often grow quickly. A tenant that adds a new hire group needs the master system expanded, not replaced, and that is the kind of planning we build in from the start.

Manufacturers face a different problem: a layoff or restructuring can make old keys a liability. Rekeying a server room, tool crib, and executive offices to a restricted keyway lets you cut off old access while keeping a clean hierarchy for those who remain. Businesses in ZIP 90670 and ZIP 90671 reach us from I-5, I-605, Imperial Highway, and Norwalk Boulevard, and we travel directly to the site.

Away from the industrial blocks, the older Los Nietos pocket has modest post-war homes, and the Heritage Park district, near Heritage Park and the Clarke Estate on Pioneer Boulevard, has offices and public-facing buildings with their own key control needs. Wherever you are in the city, call (323) 997-8867 and we will come to you.

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Other Santa Fe Springs locksmith services

See all of our Santa Fe Springs services, or our citywide master key system page.

Master Key System in Santa Fe Springs — FAQs

What is the difference between a master key and a restricted key system?
A master key system sets up a hierarchy where some keys open multiple locks. A restricted keyway, such as Medeco or Mul-T-Lock, limits who can copy keys. Many Santa Fe Springs facilities combine both. Call (323) 997-8867 to talk through which suits your site.
Can you expand our existing master key system for new employees?
Often yes, if the original design left room. We review the current system on site, then add sub-master or change keys for the new group. Some older systems have limits, and we will tell you plainly if a partial rekey makes more sense.
Can you rekey after a layoff or staff change?
Yes. We commonly rekey sensitive areas like server rooms, tool cribs, and executive offices so old keys no longer work. Because we are mobile and available 24/7, we can schedule it quickly, even outside business hours.
Do you work on panic bars and exit devices too?
Yes. We repair and service commercial exit and panic devices, and we check them whenever we work on a system. A stuck fire-exit bar should be fixed promptly so the building stays code-compliant.
Can you work around our shifts so operations keep running?
Yes. We are fully mobile, so we come to your facility and can schedule installation between shifts or after hours to avoid disrupting a distribution yard or plant floor.
Do you handle fleet and transponder keys as well?
Yes, we can cut duplicate transponder keys and help with truck lockouts for delivery fleets. That is separate from a master key design, but many logistics customers want both handled together. Call (323) 997-8867.
Do you have a shop in Santa Fe Springs I can visit?
No. Crenshaw Lock Company is fully mobile with no storefront. We come to your building anywhere in the city, including ZIP 90670 and ZIP 90671.
How is the price of a master key system decided?
It depends on door count, the keyway, the depth of the hierarchy, existing hardware, and scheduling. We do not quote without seeing the site, because each facility is different.
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