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Crenshaw Lock

Master Key System in Torrance · 24/7 mobile

Master Key System Design and Installation in Torrance, CA

Crenshaw Lock Company designs and installs master key and restricted-key systems with real key control for Torrance businesses, property managers and industrial sites. We are a fully mobile locksmith available 24/7, and we come to you. Call (323) 997-8867 to plan your system.

  • Mobile to your Torrance location
  • Available 24/7
  • Price quoted before we start
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A master key system lets many different locks be opened by their own individual keys while a higher-level key opens a defined group, or all of them. Done well, it means a tenant, a department manager and a facilities director each carry exactly the access they need and nothing more. Done badly, it means a drawer full of unlabeled keys, nobody sure who holds what, and a rekey every time an employee leaves.

Torrance gives us a wide range of buildings to design for. There are large retail tenants around Del Amo Fashion Center, multi-tenant office and light-industrial buildings along Crenshaw, Hawthorne and Sepulveda Boulevards, warehouses and manufacturing facilities in the city's industrial zones, and small historic brick storefronts in Old Torrance. Each calls for a different hierarchy, a different level of key control, and often different hardware.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and owner David Shar has seen how these systems age. We are mobile only, with no storefront, so every consultation happens at your property where we can look at the actual doors, frames and cylinders instead of guessing from a floor plan.

How it works in Torrance

  1. 1

    Walk the property and define access needs

    We visit your building and look at every opening that will be part of the system: suites, storerooms, mechanical rooms, stairwells, gates and cabinets. We talk through who needs access to what, and which doors should never be reachable by a master.

  2. 2

    Design the key hierarchy

    From that conversation we lay out the structure: individual change keys, group or area masters, and a grand master where it makes sense. We explain the tradeoffs, since every additional level adds flexibility but also some added complexity and security consideration.

  3. 3

    Choose hardware and key control level

    We match the system to your hardware. That could be standard cylinders, restricted keyways that block unauthorized duplication, or a mix. We also discuss how keys will be issued, tracked and returned.

  4. 4

    Install and convert the cylinders

    We bring the work to you. Existing locks are rekeyed or replaced with cylinders pinned to the new design, and we check that each door operates smoothly, including closers, latches and storefront hardware that may need adjustment.

  5. 5

    Test every key against every lock

    Before we finish, each key is tested on every door it should open and on those it should not. Mistakes in a master system are easiest to catch at this stage.

  6. 6

    Document and hand over the system

    You receive a clear record of the hierarchy and key assignments so the system can be maintained, expanded or re-keyed later without starting over. We are also available 24/7 if a lockout or failure interrupts business.

Need master key system in Torrance?

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

Call (323) 997-8867

What affects the price

  • The number of doors and cylinders included in the system, and whether some are new openings.
  • How many levels the hierarchy needs, such as change keys, area masters and a grand master.
  • The type of key control chosen, from standard keyways to restricted keyways with limited duplication.
  • Existing hardware condition, including whether older cylinders can be reused or must be replaced.
  • Door types involved, such as aluminum storefronts, mortise locks, gates, cabinets or panic hardware.
  • Whether the work is scheduled during business hours or needs to happen after hours to avoid disrupting operations.

Why Torrance chooses us

  • Fully mobile service: we inspect your actual doors on site rather than quoting from assumptions.
  • In business since 1987, with experience maintaining systems long after installation.
  • We plan for growth, leaving room in the design for new tenants, departments or doors.
  • Honest advice on key control, including when a restricted keyway is worth it and when it is not.
  • Experience with both modern commercial hardware and older mortise sets found in historic Torrance buildings.
  • 24/7 availability, so a lockout or failed cylinder in your system does not have to wait for morning.

Master Key System across Torrance

Torrance is a city of contrasts, and that shapes how a master key system should be built. Around Del Amo Fashion Center and the retail corridors of Hawthorne and Sepulveda Boulevards, tenants often have aluminum-storefront doors, closers, and back-of-house stockrooms that need different access for managers and staff. Servicing that hardware after hours is common, and we plan systems so that work can be done without interrupting business. Businesses in the 90503 and 90505 ZIP codes, many of them near Torrance Boulevard and Crenshaw, often fall into this category.

In Old Torrance, the El Prado historic district has brick commercial buildings and 1910s and 1920s structures where original mortise hardware may still be in place. A master system there may mean rebuilding or discreetly retrofitting existing locks rather than ripping them out, so the character of the doors is preserved. Small offices, shops and professional suites in 90501 and 90503 benefit from a simple, well-documented key plan.

Further out, industrial and manufacturing facilities near the I-110 and I-405 corridors, and property managers overseeing residential rental complexes in West Torrance, Southwood and the hillside areas such as Walteria and Hollywood Riviera, often need restricted keys and clear key accountability. Wherever your building sits, from 90502 to 90504, we come to you and design the system around how the property is actually used.

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Other Torrance locksmith services

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

Master Key System in Torrance — FAQs

What is a master key system?
It is a lock and key arrangement where each lock has its own key, and one or more higher-level keys open multiple locks. It lets you control who can open which doors without carrying a separate key for every one.
Can you convert my existing locks into a master key system in Torrance?
Often yes. Many commercial cylinders can be rekeyed into a master system, though older or worn hardware may need replacing. We inspect on site and tell you what can be reused. Call (323) 997-8867 to schedule.
What is a restricted key system?
A restricted system uses special keyways and controlled blanks so keys cannot be casually copied at a hardware store. It adds accountability and is popular for businesses, multi-tenant buildings and industrial sites.
Will a master key system work with aluminum storefront doors and panic hardware?
Yes, in most cases. Storefront mortise cylinders and many exit devices can be keyed into a system. We also service closers and panic hardware, which matters for retail tenants near Del Amo.
Can the system be expanded later?
A good design leaves room for growth. We document the hierarchy so new doors, tenants or departments can be added later without redoing the whole system.
Do you work after hours?
We are a 24/7 mobile locksmith, so after-hours scheduling is possible, which helps retail and office businesses avoid disruption. Call (323) 997-8867 to arrange a time.
What happens if a key is lost or an employee leaves?
Depending on the key's level, we can rekey the affected cylinders or adjust the system. Restricted keys and good records make this far simpler and limit how many locks are affected.
Do I need to visit your shop to get started?
No. We are mobile only and have no storefront. We come to your Torrance property, review the doors and walk you through options on site.
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