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Crenshaw Lock

Master Key System in Westmont · 24/7 mobile

Master Key System in Westmont, California

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

  • Mobile to your Westmont 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 each tenant, employee, or tenant unit still has a key that opens only its own lock. For a Westmont landlord with a few duplexes, or a business owner with several units along Western Avenue, that means carrying one key instead of a heavy ring, and never again wondering who still holds a copy of a door key.

Westmont's building stock makes this a practical question. Many properties here are older stucco bungalows converted to rentals, small apartment buildings, and duplexes, plus mini-malls, markets, and auto shops along Western, Vermont, and Imperial Highway. Locks on these buildings are often worn, mismatched, and keyed years ago to people who have long since moved on. A master key system is a chance to replace that patchwork with something organized.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, led by owner David Shar. We are mobile only, so there is no storefront to visit. We work on site, look at your doors, and build a system around how your property is actually used.

How it works in Westmont

  1. 1

    Walk the property and list every door

    We come to your building and note every lock: unit doors, common entries, utility rooms, gates, storage, and offices. We look at the condition of each lock and door, since older hardware in a 1940s building sometimes cannot be keyed into a system at all.

  2. 2

    Decide who needs access to what

    We talk through the access levels you want: a single unit, a floor or group of units, a maintenance level, and a top-level key for the owner or manager. This hierarchy is the heart of the system, and it is much cheaper to plan it before cutting keys than after.

  3. 3

    Choose hardware and a keyway

    We recommend lock hardware suited to the property. Some owners want a standard keyway for convenience, others want a restricted keyway so keys cannot be duplicated at a hardware store. Roll-down gates and storefront doors may need different high-security locks that still fit into the system.

  4. 4

    Install, rekey, and pin the system

    We install new locks or rekey suitable existing ones, pinning each cylinder to its place in the hierarchy. Because we are mobile, the work happens at your property, and we test every key against every door before we leave.

  5. 5

    Set up key control and records

    We help you set up a record of which keys went to whom, and explain how restricted keys are ordered so extra copies require authorization. When a tenant leaves, you can rekey just that unit without disturbing the rest.

  6. 6

    Support as the property changes

    Tenants turn over, staff change, and units get added. We can extend the system, rekey individual doors, and replace lost keys while keeping the hierarchy intact.

Need master key system in Westmont?

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 in the system, since each one must be keyed or replaced.
  • How many access levels you want, such as unit, building section, maintenance, and owner keys.
  • Whether existing locks can be rekeyed or worn older hardware has to be replaced.
  • The type of keyway: standard, or restricted with controlled key duplication.
  • Special hardware such as high-security locks for roll-down gates or storefront doors.
  • How many keys you need cut at the start and whether you want an organized record-keeping setup.

Why Westmont chooses us

  • Fully mobile service: we work at your property, not from a shop, so we see the actual doors and conditions.
  • In business in Los Angeles since 1987, with owner David Shar involved in the work.
  • Experience with older homes and small buildings, where worn locks and aging doors need honest assessment before being tied into a system.
  • We design around your hierarchy and your habits, not a one-size package.
  • Available 24/7, so a lost master key or a sudden tenant move-out does not have to wait.
  • Plain explanations of restricted keys and their tradeoffs, so you choose what fits your property.

Master Key System across Westmont

Westmont sits in unincorporated Los Angeles County, and its mix of buildings makes master key planning varied. Along the Western Avenue corridor and the Vermont Avenue corridor, commercial strips of mini-malls, markets, and auto shops often have several small units under one owner, many behind roll-down security gates. A system that lets the owner reach every unit while each tenant keeps a separate key suits that setup well, especially around the Imperial Highway commercial strip and the Vermont/Manchester corridor.

Residential blocks in ZIP codes 90047 and 90044 are full of 1920s to 1950s bungalows, duplexes, and small apartment buildings. Landlords with rentals near Jesse Owens Community Regional Park or close to Washington Preparatory High School often need to rekey after tenant turnover. A master key system turns that from a scramble into a routine job.

We also serve neighboring Vermont Knolls and West Athens, where similar older housing and small commercial properties raise the same questions. Wherever you are, call (323) 997-8867 and we will come to you.

Locked out or need a locksmith now?

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

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Other Westmont locksmith services

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

Master Key System in Westmont — FAQs

What is a master key system?
It is a lock setup where each door has its own key, and a higher-level master key opens a defined group of doors. You can have several levels, up to a top key that opens everything.
Can you convert my existing locks in Westmont?
Often yes, if the locks are in good enough condition to be rekeyed. Older worn hardware may need replacing first. Call (323) 997-8867 and we will assess it on site.
What is a restricted keyway?
It is a key profile that is controlled, so copies cannot be cut at ordinary key shops. Duplicates require authorization, which gives you stronger key control.
Is this useful for a small duplex or just big buildings?
It works for both. A landlord with a duplex or a few units gains from a manager key and easier rekeying at tenant turnover.
Can a master key system include roll-down gate locks?
In many cases we can fit high-security gate and storefront locks into the same system, depending on the hardware. We check the gates during our walkthrough.
What happens if a tenant loses a key or moves out?
We can rekey just that unit so the old key no longer works, while the rest of the system stays intact. Call (323) 997-8867 to arrange it.
Do you have a shop I can visit?
No. Crenshaw Lock Company is fully mobile and works at your property, available 24/7.
Can you add doors to the system later?
Yes. If you add units or change your access levels, we can extend or adjust the system while keeping the existing hierarchy working.
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