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Crenshaw Lock

Master Key System in Chatsworth · 24/7 mobile

Master Key System in Chatsworth, California

Crenshaw Lock Company designs and installs master key and restricted-key systems in Chatsworth, California. We are a fully mobile locksmith available 24/7, and we come to your warehouse, office, or property. Call (323) 997-8867 to talk through your doors, your people, and how you want keys controlled.

  • Mobile to your Chatsworth 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 one key open many doors while individual keys open only some. It sounds simple, but a good system is designed on paper before a single cylinder is touched. Who needs access to what, which doors are shared, which are off limits, and what happens when someone leaves the company or a tenant moves out all shape the layout. Crenshaw Lock Company has been doing this kind of work across Greater Los Angeles and Ventura County since 1987, under owner and lead technician David Shar.

Chatsworth presents a particular mix of needs. The industrial and business district around Canoga, Prairie, and Lassen has warehouses, multi-tenant buildings, and self-storage facilities where lease changes and staff turnover are routine. Out toward Santa Susana Pass and the horsekeeping lots, owners may have a house, a barn, a tack room, and a driveway gate that would all be easier to manage on one coordinated keying plan. Both situations benefit from the same discipline: know who holds which key.

We are mobile only. There is no storefront to visit; we work on site, which also means we see your actual doors, hardware, and traffic patterns before recommending anything. A master key system is only as good as the hardware under it, so we will tell you plainly if a worn lock should be replaced rather than rekeyed into the new system.

How it works in Chatsworth

  1. 1

    Walk the site and list every opening

    We start by visiting the property and cataloging each lock: entry doors, interior offices, storage rooms, roll-up doors, gates, padlocks, and cabinets. We note brand, condition, and whether each device can be rekeyed or should be replaced.

  2. 2

    Map out who needs access to what

    Together we sketch an access hierarchy. This often includes a grand master for ownership or property management, master keys for department heads or building managers, and change keys for individual tenants or employees. We also flag doors that should stay outside the system entirely.

  3. 3

    Choose a keyway and level of key control

    You decide between a standard keyway and a restricted one. Restricted keyways limit duplication to authorized people, which matters for multi-tenant buildings and sites with frequent staff changes. We explain the tradeoffs in plain language.

  4. 4

    Pin, install, and test the cylinders

    We rekey compatible locks and install new high-security cylinders or deadbolts where needed, including commercial deadbolts and roll-up-door hardware. Every cylinder is tested with each key in the hierarchy, so a key that should not open a door is confirmed not to.

  5. 5

    Issue keys and document the system

    We cut and label keys, and provide a key schedule that records which key opens which doors. Keeping that record current is the heart of key control, so we walk you through how to use it.

  6. 6

    Plan for changes and expansion

    Leases end, staff leave, and buildings grow. We leave room in the design for additional doors and new key holders, and we can return to rekey or add cylinders without starting from scratch.

Need master key system in Chatsworth?

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What affects the price

  • The number of doors, gates, and padlocks that need to join the system, since each opening is a cylinder to rekey or replace.
  • The depth of the hierarchy: a simple master and change key arrangement is less involved than several master levels with a grand master.
  • Whether existing hardware can be rekeyed or must be replaced, particularly on older commercial deadbolts, worn roll-up-door locks, or weathered gate and barn hardware.
  • The keyway you choose, with restricted high-security keyways costing more to set up than standard ones but offering stronger duplication control.
  • How many keys you need cut, and for how many holders, including spare sets and labeling.
  • Timing and location of the visit, such as after-hours or urgent work at a site, and whether the job is completed in one visit or phased.

Why Chatsworth chooses us

  • Fully mobile service: we work at your Chatsworth warehouse, office, or property, so we see the real doors before we design the system.
  • Operating since 1987, with owner and lead technician David Shar involved in the work rather than a faceless dispatch desk.
  • Available 24/7, which helps when a lease change, terminated employee, or break-in attempt means keys need to be controlled right away.
  • We tell you when a lock should be replaced instead of rekeyed. A system built on failing hardware does not deliver real key control.
  • We cover a mixed property type: industrial buildings, self-storage, ranch homes, and horsekeeping lots with gates and tack rooms, all within one coordinated plan if you want it.
  • You get a written key schedule so you can manage who holds what long after we leave.

Master Key System across Chatsworth

Chatsworth sits in the far northwest corner of the San Fernando Valley, backing onto the Santa Susana Mountains, and its buildings reflect that. The industrial and business district along Canoga, Prairie, and Lassen, near Nordhoff, Plummer, and Topanga Canyon Blvd, is full of warehouses, light industrial units, and storage buildings. A tenant there who changes leases often needs roll-up-door padlocks and high-security commercial deadbolts brought under a single master, with old keys that walk around the neighborhood no longer working. We handle that kind of work in ZIP code 91311 and across the district.

Up toward Indian Hills and the Santa Susana Pass area, and through the equestrian horsekeeping district, the picture changes. Properties may have a main house, a barn, a tack room, and a driveway gate, each with its own lock and its own keys. An owner locked out of a tack room often discovers that no one knows where the spare keys are. Bringing the barn padlock, gate lock, and house hardware onto one organized system, including restricted keys for hired help or boarders, makes day-to-day life easier. Dust, heat, and Santa Ana grit are hard on exterior hardware here, so we check whether existing locks are worth keeping. Homes in ZIP code 91313 and nearby hillside streets near Stoney Point often have the same issue with seized deadbolts.

We reach customers along Devonshire St, Chatsworth St, De Soto Ave, Mason Ave, the Ronald Reagan Fwy (SR-118), and Santa Susana Pass Rd, whether the property is near the Chatsworth Transportation Center or out near Oakwood Memorial Park. If you manage space in Chatsworth, call (323) 997-8867 and we will come look at it.

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Other Chatsworth locksmith services

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

Master Key System in Chatsworth — FAQs

What is a master key system?
It is a keying plan where each lock has its own key, but higher-level master keys also open selected groups of locks. A grand master can open everything. It lets owners or managers carry one key while staff and tenants carry only what they need.
Can you set up a master key system for a Chatsworth warehouse with multiple tenants?
Yes. We design the hierarchy so each tenant's key opens only their space, while a property master handles shared areas and, if appropriate, all units. Call (323) 997-8867 to discuss your building.
Can you include roll-up-door padlocks and commercial deadbolts?
Generally yes. We can rekey compatible padlocks and deadbolts to the system or replace them with high-security versions that fit your plan. We inspect each one first to see whether it is worth keeping.
What does a restricted keyway do?
A restricted keyway uses blanks that are not freely sold, so keys cannot be casually duplicated at a hardware store. Duplication is controlled through authorized channels. This is useful when you need to know exactly how many keys exist.
Can my horse property gate, barn, and house be on one system?
In most cases, yes. We can work with house locks, barn and tack room padlocks, and driveway gate locks. Some older or weathered hardware may need replacement first. Call (323) 997-8867 and we will look at what you have.
Do you offer this after hours or on weekends?
We are a 24/7 mobile locksmith. Many master key projects are planned during business hours, but urgent changes, such as after a termination or a security incident, can be handled whenever you need them.
What if an employee or tenant leaves without returning a key?
A well-designed system limits the damage. Often only the affected cylinders need to be rekeyed, not the whole building. We can do that quickly and update your key schedule.
Do I need to visit your shop to get started?
No. We are mobile only and have no storefront. We come to your property, assess the doors, and do the work 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