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Crenshaw Lock

Master Key System in Pico Rivera · 24/7 mobile

Master Key System Design and Installation in Pico Rivera, CA

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

  • Mobile to your Pico Rivera 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 the fewest keys possible. A property manager might carry one key that opens every unit's common areas, a shop owner might keep a key that opens the back office while staff keys open only the sales floor, and a maintenance crew might open utility rooms but nothing else. Done well, it cuts down the ring of keys on every belt and makes it clear who can get in where. Done badly, it creates confusion and security gaps.

Pico Rivera has a mix of buildings where this matters. Along Whittier Blvd, Washington Blvd and Rosemead Blvd you find aluminum-storefront shops and small strip centers. Around Pico Rivera Towne Center there are larger retail spaces with back-of-house doors, stockrooms and offices. Near the I-605 and San Gabriel River corridor there is light-industrial space with shop doors, yards and gates. Each has different needs, from a handful of doors to a full multi-tenant layout.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and owner David Shar leads the work. We are mobile only, so there is no storefront to visit. We walk your property, talk through who needs access to what, and design the system around your doors rather than forcing a stock template onto them. We also set up restricted keyways and key control so that copies cannot simply be made at a hardware kiosk.

How it works in Pico Rivera

  1. 1

    Walk the property and list every door

    We come to your site and go door by door: storefronts, back doors, offices, storage rooms, gates, and any padlocked equipment. We note the existing hardware, its condition and whether it can accept a new cylinder or needs replacing.

  2. 2

    Map who needs access to what

    We sit down with you and sketch an access hierarchy. This usually means a grand master, a master per area or tenant, and individual change keys. We ask about staff turnover, contractors, cleaning crews and after-hours access so the structure fits real habits.

  3. 3

    Choose keyways and key control level

    We discuss standard keyways versus restricted keyways. A restricted system means keys can only be duplicated through authorized channels, which is useful when many people hold keys. We explain the tradeoffs in cost, convenience and security so you can decide.

  4. 4

    Pin and install the cylinders

    We combinate the cylinders to the agreed hierarchy and install or rekey them on site. Where old locks are worn or mismatched, we replace them with hardware that suits the door. Because we are mobile, the work happens at your location.

  5. 5

    Test every key on every door

    Before we leave, we test each key in each lock, confirming that masters open what they should and change keys open only their own doors. We fix anything that does not behave as designed.

  6. 6

    Document and hand over key control

    We give you a clear record of the key structure and talk through how to issue, track and retrieve keys. When staff or tenants change, we can rekey affected doors or add keys to the system later without starting over.

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What affects the price

  • The number of doors and cylinders included in the system, since each one must be keyed to the hierarchy.
  • How many levels the hierarchy has, such as a single master versus a grand master with area masters and individual keys.
  • Whether you choose standard keyways or a restricted keyway with tighter duplication control.
  • The condition and type of existing hardware, because worn or incompatible locks may need replacement instead of rekeying.
  • How many keys of each type you need cut at handover, and whether you expect to add more later.
  • Whether the work is scheduled in advance or needed urgently outside normal hours, and how many visits are required for a larger property.

Why Pico Rivera chooses us

  • We have worked in Los Angeles area locks since 1987, so we have seen how master key systems age in real buildings.
  • The business is fully mobile and available 24/7, so we can work around your store hours, including early mornings or late nights.
  • We design the system around your actual access needs rather than selling a one-size-fits-all package.
  • We explain restricted keyways and key control plainly, including their limits, so you can decide without pressure.
  • The owner, David Shar, leads the work, which keeps the design conversation direct and consistent.
  • We can expand or rekey the system later when tenants, staff or vendors change.

Master Key System across Pico Rivera

Pico Rivera was formed in 1958 from the Pico and Rivera districts, and its commercial areas reflect that suburban growth. Strip centers and storefront shops line Whittier Blvd, Washington Blvd and Rosemead Blvd, and many have multiple tenants sharing walls, rear service doors and storage areas. In ZIP 90660, which covers much of the central part of the city, a landlord with several small units can benefit from a system where each tenant has a private key and the owner or manager holds a master.

Larger sites such as Pico Rivera Towne Center bring a different set of needs, with stockrooms, offices and employee-only doors that all need controlled access. Venues around the Pico Rivera Sports Arena, and public areas near Streamland Park and Smith Park, often involve many staff, volunteers and vendors, which is where restricted keys and a clear key record are most valuable. The Whittier Narrows Recreation Area sits next door, and nearby facilities with gates and equipment sheds are good candidates for a keyed-alike or master-keyed approach.

Light-industrial users near the I-605 and the San Gabriel River corridor, as well as businesses in ZIP 90661 and ZIP 90662 and in the North Pico Rivera area, often have shop doors, yards and office suites that need layered access. Whether you are in Pico, Rivera or North Pico Rivera, we come to your site. Call (323) 997-8867 to schedule a walkthrough.

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Other Pico Rivera locksmith services

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

Master Key System in Pico Rivera — FAQs

What is a master key system?
It is a lock arrangement where each door has its own key, but one or more higher-level keys can open multiple doors. A property manager, for example, can carry a single master while each tenant has a key that opens only their unit.
Can you set up a system for a strip-mall property on Whittier Blvd?
Yes. We can key each tenant space separately and give the owner or manager a master for common or service doors. Call (323) 997-8867 and we will arrange a site walkthrough.
What does a restricted keyway do?
A restricted keyway uses a key blank that is not freely sold, so copies must go through an authorized source. This helps prevent unauthorized duplication, though it should be paired with good key tracking.
Can you convert my existing locks to a master key system?
Often yes. If your current cylinders can be rekeyed, we can pin them to a new hierarchy. Worn or mismatched hardware may need replacing, and we will tell you which is which after inspecting the doors.
Do you come to my location?
Yes. We are fully mobile and available 24/7, and we have no storefront. We do the design walkthrough and installation at your property in Pico Rivera.
What happens when an employee or tenant leaves with a key?
We can rekey the affected doors so the old key no longer works, without disturbing the rest of the system. This is much easier when the system was designed with change keys per person or area.
Is a master key system less secure than separate keys?
It can be if poorly designed, because a lost master opens many doors. Good design limits how many people hold masters and uses restricted keys and tracking to reduce that risk. We will talk through the tradeoffs.
How do I get started?
Call (323) 997-8867 and tell us about your building, how many doors you have and who needs access. We will schedule a walkthrough and explain your options.
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