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Crenshaw Lock

Master Key System in Whittier · 24/7 mobile

Master Key System in Whittier, California

Crenshaw Lock Company designs and installs master key and restricted-key systems with key control for Whittier, California properties. We are fully mobile and available 24/7, and we come to your building. Call (323) 997-8867 to talk through your doors, your users, and how your keys should be organized.

  • Mobile to your Whittier location
  • Available 24/7
  • Price quoted before we start
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Large ring of master system keys with colored key caps
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A master key system lets different people open different doors with the right key for each person. A manager's key opens every suite, a tenant's key opens only their own space, and a cleaning crew's key opens only the common areas. Done well, it replaces the ring of twenty keys with one key per person and gives the owner a clear record of who holds what. Done poorly, it creates security gaps that are hard to see until something goes missing.

Whittier is a good example of why these systems need to be planned and not just bought off a shelf. Uptown Whittier has brick and Spanish Revival storefronts from the early 1900s, with older doors, aluminum storefront cylinders, and panic hardware sitting side by side. Elsewhere in the city you find office suites along Whittier Blvd and Painter Ave, campus-adjacent buildings near Whittier College, and larger gated residences in Friendly Hills. Each of these calls for a different layout of keys, levels, and control.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and owner and lead technician David Shar built the business on mobile service. We have no storefront for you to visit. We come to your property, look at the actual hardware, and design the system around what is really on your doors. If you also need a failing lock repaired, a rekey, or smart-lock and gate-keypad work, we can fold that into the same visit.

How it works in Whittier

  1. 1

    Walk the property and list every door

    We start on site, because a master key plan is only as good as the door list behind it. We note each opening, the type of lock or cylinder already installed, whether it is a mortise lock, a deadbolt, an aluminum storefront cylinder, or a panic device, and who needs access to it.

  2. 2

    Map out the key hierarchy

    Next we sit down with you and decide who gets what. That usually means a grand master, one or more master keys for departments or floors, and individual change keys for single doors. We talk through contractors, cleaners, and seasonal staff, and how you want to handle people who leave.

  3. 3

    Choose the right keyway and level of key control

    A standard keyway can be copied at many places. A restricted keyway limits duplication to authorized requests, which matters when you want real accountability. We explain the tradeoffs between open and restricted systems so you can choose what fits the building and the budget.

  4. 4

    Pin the cylinders and install hardware

    We pin or replace cylinders to match the plan, and where an existing lock cannot take the system, we recommend a compatible replacement. On historic or specialty doors we try to keep the look of the original hardware wherever it is practical.

  5. 5

    Test every key on every door

    Before we leave, we test each key in each lock it should open and each lock it should not. This catches pinning errors and cross-keying problems while we are still standing there to fix them.

  6. 6

    Document the system and hand over the keys

    You receive the keys, a clear key schedule showing which key opens what, and guidance on how to track issuance. We also explain how to add doors or users later without having to start from scratch.

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What affects the price

  • The number of doors and cylinders that have to be included in the system.
  • How many levels of access you need, from a simple master and change keys up to a multi-tier grand master.
  • Whether you choose a standard keyway or a restricted keyway with controlled duplication.
  • The condition and type of existing hardware, such as older mortise locks, aluminum storefront cylinders, or panic devices that may need replacement to accept the system.
  • How many keys you need cut and issued at the start.
  • Whether the work happens during normal business hours or you need after-hours or urgent service.

Why Whittier chooses us

  • Fully mobile service. We come to your building anywhere in Whittier, and there is no shop to drive to.
  • Available 24/7, so a lockout or a lost master key does not have to wait for business hours.
  • In business since 1987, with owner David Shar involved in the work and not just the paperwork.
  • We look at your real hardware before recommending anything, including older mortise and storefront cylinders that do not suit every off-the-shelf system.
  • We plan for change. Staff turn over and tenants move out, so we design the system so it can be re-keyed or expanded without replacing everything.
  • We explain tradeoffs plainly, including when a simpler setup is the better choice than a full master key system.

Master Key System across Whittier

Whittier's building stock is unusually varied for a master key project. In Uptown Whittier, the historic district has brick and Mission or Spanish Revival storefronts from the early twentieth century. A boutique or office there may have an aluminum storefront door, a wood interior door with older hardware, and a back exit with panic hardware, all needing to work under one key plan. We pay attention to how each of these accepts a cylinder before promising a result, and we try to keep period details intact where we can.

Other parts of the city call for other approaches. Around the Whittier College district and ZIP code 90601, small offices, rental properties, and mixed-use buildings often need a manager key that covers shared spaces while keeping individual units separate. In East Whittier, where mid-century tract homes are common, property owners with several rentals sometimes want one key for themselves and a unique key for each unit. In Friendly Hills and along Turnbull Canyon, larger gated hillside homes may combine house doors, side gates, and a driveway gate keypad into a single access plan.

We serve Whittier and the surrounding ZIP codes, including 90601 through 90608, and we work around the places people actually travel, such as Whittier Blvd (SR-72), Beverly Blvd, Painter Ave, and Colima Rd. Whether your property sits near Rose Hills Memorial Park, close to Pio Pico State Historic Park, or in the middle of Uptown, call (323) 997-8867 and we will come to you.

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Other Whittier locksmith services

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

Master Key System in Whittier — FAQs

What is a master key system?
It is a lock arrangement where each door has its own key, and one or more higher-level keys can open multiple doors. A manager might hold a master that opens every suite, while each tenant holds a key for only their own door.
Can you install a master key system in an older Uptown Whittier storefront?
Often yes, but it depends on the hardware. Aluminum storefront cylinders and many modern deadbolts can be pinned into a system. Some older mortise locks need specific cylinders or a replacement. We inspect the doors first and tell you what is possible. Call (323) 997-8867 to set up a visit.
What is a restricted keyway and do I need one?
A restricted keyway uses a key blank that is not freely available, so copies generally need authorization. It is useful when you need real control over who can duplicate keys, such as in offices, multi-tenant buildings, or properties with many users. For a small setup, a standard keyway may be enough.
Can you add a new door to my system later?
In most cases, yes. A well-planned system leaves room to add doors or users. We keep a record of the key schedule so new cylinders can be pinned to match what you already have.
What happens if a master key is lost?
Tell us as soon as you notice. Depending on the level of the lost key, we may need to rekey the affected cylinders and issue replacement keys. Prompt action limits the number of doors you need to change. You can reach us 24/7 at (323) 997-8867.
Do you offer this service for gated homes in Friendly Hills?
Yes. Larger homes with gates can benefit from a plan that separates house keys, service-door keys, and gate access. We can also discuss keypad or smart-lock options for a driveway gate as part of the same project.
Do I have to come to a shop?
No. Crenshaw Lock Company is fully mobile and has no storefront. We come to your Whittier property to assess the doors, install the system, and test the keys.
How is a master key system priced?
Cost depends on factors such as the number of doors, how many access levels you want, the keyway you choose, the condition of existing hardware, and the number of keys needed. After seeing your property we can explain what drives the cost in your case.
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