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Crenshaw Lock

Master Key System in El Segundo · 24/7 mobile

Master Key System in El Segundo, California

Crenshaw Lock Company designs and installs master key and restricted key systems in El Segundo, California, with key control built in. We are fully mobile and available 24/7, coming to your building rather than a storefront. For a walkthrough of your doors, call (323) 997-8867.

  • Mobile to your El Segundo 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 as few keys as possible. A facilities manager might carry one key that opens every suite, a department head might carry one that opens only their floor, and an employee might carry one that opens a single office. Done well, the structure matches how your organization works. Done poorly, it ends up with keys nobody can account for.

El Segundo has an unusual mix of buildings for this work. East of Sepulveda you find large corporate and aerospace campuses, and the Smoky Hollow light-industrial and creative district has multi-suite buildings with several tenants under one roof. Each setting needs a different key plan, and we design around the way the building is actually used, not around a stock template.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, led by owner and lead technician David Shar. We are mobile only, so every assessment, installation and rekey happens at your property, including after hours when your staff is gone and the work will not disrupt anyone.

How it works in El Segundo

  1. 1

    Walk the property and learn how it is used

    We start by looking at your doors, existing locks and who needs access to what. In a multi-suite building that means tenants, the landlord, maintenance and cleaning crews. On a campus it may mean departments, shifts and contractors.

  2. 2

    Design the key hierarchy

    We map out the levels of access, such as individual change keys, group masters and a grand master. We talk through how many levels you really need, because every added level adds complexity and some security trade-offs.

  3. 3

    Choose the right hardware and keyway

    Some doors can be rekeyed to the new system, while others need new cylinders or locksets. You can choose a standard keyway or a restricted one, where key duplication is limited to authorized people. We explain the trade-offs for your situation.

  4. 4

    Install and rekey, often after hours

    Because we come to you, we can schedule installation around your operations. Offices, suite doors, utility rooms and cabinet cam locks can be brought into the same plan so nothing is left on an old key.

  5. 5

    Cut, label and test keys

    Each key is tested against the doors it should open and, just as important, the doors it should not. We document the key schedule so you have a clear record of which key does what.

  6. 6

    Set up key control going forward

    We help you set a simple process for issuing, tracking and recovering keys, and for what to do when someone leaves or a tenant moves out. That is what keeps the system secure over time.

Need master key system in El Segundo?

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 existing hardware can be reused or has to be replaced.
  • How many levels of access the hierarchy needs, from simple master and change keys to a multi-tier grand master design.
  • The keyway you choose, since restricted or patented keyways involve more controls than a standard open keyway.
  • The grade and type of hardware on each door, including whether any doors are being upgraded or tied into electronic access control.
  • How many keys are cut and how many people will carry them.
  • Scheduling, including after-hours or emergency work, and any added cabinet, cam lock or gate lock service.

Why El Segundo chooses us

  • Fully mobile and available 24/7, so installation and rekeying can happen at night or on weekends without interrupting your business.
  • Over three decades of local experience since 1987, with the owner personally involved in the work.
  • Designs based on how your building is used, not a one-size-fits-all key plan.
  • Plain-language advice about the trade-offs of master keying, including when a simpler setup or electronic access control is the better choice.
  • One plan for everything, from suite doors to file cabinets and cam locks, so there are no forgotten locks on old keys.
  • Clear key documentation so you know what you have and can manage it after we leave.

Master Key System across El Segundo

El Segundo splits neatly in two for lock work. West of Sepulveda, the residential grid of 1920s to 1940s bungalows and 1950s homes mostly calls for traditional locksmith service. East of Sepulveda, the Smoky Hollow district has creative offices, light-industrial spaces and multi-suite buildings where a landlord or tenant often wants one coordinated key system. A building with several tenants is a classic fit: each tenant gets their own suite key, and the property manager has a master for emergencies and maintenance.

The corporate and aerospace side of town has different needs. Near Los Angeles Air Force Base, the Chevron refinery, Mattel headquarters and other large campuses along Aviation Blvd, Rosecrans Ave and El Segundo Blvd, facilities teams deal with staff turnover, shifting departments and strict control over who holds keys. After a team change, we can rekey interior offices and service file-cabinet and cam locks after hours, folding them into the existing hierarchy. Where a campus already uses electronic access control, mechanical master keys often still cover interior doors, closets and cabinets.

Whether your building is in Smoky Hollow, along Main Street downtown, or elsewhere in ZIP code 90245, we come to you. We are mobile only, with no storefront, and you can reach us any time at (323) 997-8867 to talk through a master key plan.

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Other El Segundo locksmith services

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

Master Key System in El Segundo — FAQs

What is a master key system?
It is a lock setup where each door has its own key, and higher-level keys can open multiple doors. A property manager might have one key for every suite, while each tenant has a key for only their own space.
Is a master key system a good fit for a multi-suite building in Smoky Hollow?
Often, yes. It lets each tenant control their own suite while the landlord keeps access for emergencies and maintenance. Call (323) 997-8867 and we can talk through your layout.
What does a restricted keyway do?
A restricted keyway limits who can get duplicate keys cut, because blanks are not freely available. That makes it harder for someone to copy a key without authorization, which supports key control.
Can you work after hours so we are not disrupted?
Yes. We are mobile and available 24/7, so we can schedule work in the evening or on weekends. This is especially useful for corporate offices where staff need uninterrupted access during the day.
Can you rekey offices after staff changes?
Yes. We can rekey interior offices and service file cabinet and cam locks so old keys no longer work. If you want to include them in a master key plan, we can do that too.
Can my existing locks be part of the new system?
Sometimes. Many commercial cylinders can be rekeyed or replaced to fit the new system, while locks that are worn or incompatible may need replacing. We check during the walkthrough.
How is a master key system different from electronic access control?
Master keys are mechanical and rely on physical key control. Electronic access control uses credentials that can be turned off individually. Many buildings use both, and we can help you decide. You can reach us at (323) 997-8867.
Do you have a shop I can visit in El Segundo?
No. We are fully mobile only, with no storefront. We come to your property anywhere in El Segundo, including ZIP code 90245.
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