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Crenshaw Lock

Master Key System in Cudahy · 24/7 mobile

Master Key System Design and Installation in Cudahy, CA

Crenshaw Lock Company designs and installs master key and restricted-key systems with real key control for Cudahy, California properties. We are fully mobile and available 24/7, coming to your lot or building. Call (323) 997-8867 to talk through your doors, your users and how keys should work.

  • Mobile to your Cudahy location
  • Available 24/7
  • Price quoted before we start
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A master key system sounds like something for office towers, but it fits Cudahy well. This is a dense city of about 1.18 square miles, and many of its properties carry several doors on a single parcel: a front house, one or more rear units, a gate, a laundry room, a storage shed. Each of those doors has people who need access and people who should not have it. A well-planned system lets each tenant use one key for their own unit while the owner or manager holds a key that opens everything, without a ring of a dozen keys.

We design the system on paper before any hardware is touched. That means listing every door, deciding who needs what level of access, and choosing a keying structure that can grow if you add a unit or a tenant later. Then we install or rekey the cylinders, build the key set, and show you how to track who holds what. Restricted keyways go a step further: the blanks are not sold at the corner hardware store, so a key cannot be casually copied.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, led by owner and lead tech David Shar. We are mobile only, with no storefront to visit, so the whole job happens at your property. Landlords, small business owners along Atlantic Avenue and property managers who are tired of lost keys and unknown copies are the people this service is built for.

How it works in Cudahy

  1. 1

    Walk the property and list every door

    We come to your lot or building and go through each lock: front doors, rear units, gates, utility and storage rooms, offices. We note the hardware you already have, what condition it is in and which doors are shared versus private.

  2. 2

    Define access levels

    Together we decide who needs which keys. A tenant opens only their unit and perhaps a shared gate. A manager opens all units. An owner may hold a top-level key above that. Writing this out first prevents expensive rework.

  3. 3

    Design the keying structure

    We lay out the key hierarchy, with change keys for individual doors, master keys for groups and, if needed, a grand master. We also discuss whether a restricted keyway makes sense so copies are controlled.

  4. 4

    Install or rekey the cylinders

    We fit new cylinders or rekey suitable existing ones to match the design, working door by door. Where hardware is worn or unsuitable for a system, we tell you plainly and explain the options.

  5. 5

    Test every key on every door

    Before we leave, we test each key against each lock to confirm it opens what it should and nothing it should not. Doors are checked for smooth operation as well.

  6. 6

    Set up key control and records

    We hand over the keys, a key schedule showing which key opens which door, and guidance on issuing and recovering keys. When tenants turn over, adding or changing keys is straightforward.

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What affects the price

  • The number of doors and cylinders in the system, since each one must be keyed to the design.
  • Whether existing hardware can be rekeyed or needs to be replaced with cylinders suited to master keying.
  • The complexity of the hierarchy, such as a single master versus multiple groups and a grand master.
  • Whether you want a restricted keyway with controlled key duplication rather than a standard keyway.
  • The number of keys to be cut for tenants, staff and managers.
  • Scope of work such as gates, padlocks and shared driveway hardware included alongside the unit doors.

Why Cudahy chooses us

  • Fully mobile service: we come to your Cudahy property, and there is no storefront, so there is no extra trip for you.
  • Available 24/7 for urgent hardware issues that arise while a system is being rolled out or afterward.
  • Serving the region since 1987, with owner David Shar leading the work.
  • Design-first approach: we plan access levels with you before touching a lock so the system fits how your property actually runs.
  • Honest hardware advice: if a door's existing lock cannot support the system, we say so rather than force it.
  • Clear key schedules and records handed over at the end, so turnover rekeys and additions are easier later.

Master Key System across Cudahy

Cudahy's long, narrow lots, laid out in the 1920s for small-scale farming and gardening, are a natural fit for master keying. A typical parcel has a front bungalow and one or more rear units down a long driveway, often built as 1960s to 1980s infill. In neighborhoods such as the Clara Street area and the Santa Ana Street district, one owner may be managing three or four separate households behind a single address. A system lets each household have its own key while the landlord holds one that covers the whole lot.

Shared driveways add another layer. Many have a security gate at the head with a padlock or keyed latch, and rear-unit tenants must get through it. We can fold gate hardware into the same plan so tenants use their unit key logic consistently and a lost key does not mean the whole lot is compromised. High tenant turnover, common in dense areas, makes this especially useful because a single rekey can cut off a former tenant without redoing everything.

We also work with businesses along the Atlantic Avenue commercial strip and around Santa Ana St and Florence Ave, where shops and offices need separation between public areas, back rooms and storage. Whether the property is in ZIP code 90201 near Cudahy Park or Lugo Park, or close to the Los Angeles River and I-710, we come to you. Call (323) 997-8867 any time.

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Other Cudahy locksmith services

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

Master Key System in Cudahy — FAQs

What is a master key system?
It is a keying plan in which each lock has its own key, and a higher-level master key opens a defined group of those locks. A tenant carries one key, while an owner or manager carries one that opens every unit.
Does a master key system make sense for a Cudahy lot with a front house and rear units?
Yes. Many Cudahy lots have several households on one parcel. A system lets each unit have private keys while the landlord has a key to all, and it can include the driveway gate. Call (323) 997-8867 to discuss your layout.
What is a restricted keyway?
A restricted keyway uses key blanks that are not freely sold, so copies are controlled. It adds key control for properties where unauthorized duplicates are a worry, such as multi-tenant buildings.
Can you use my existing locks?
Sometimes. Many cylinders can be rekeyed into a system, but worn or low-quality hardware may not suit master keying. We inspect first and tell you honestly which doors can stay and which should be replaced.
How is pricing determined?
It depends on the number of doors, the hierarchy's complexity, the hardware needed, whether you choose a restricted keyway and how many keys you need. We talk through these factors and explain the scope when we assess the property. Call (323) 997-8867.
Can the gate padlock at the head of our shared driveway be part of the system?
Often, yes. We can install a new padlock or keyed gate latch and plan access so it fits with your unit keys, depending on the hardware type and how many people need entry.
What happens when a tenant moves out?
With a system in place, we can rekey that unit's cylinder so old keys stop working, without disturbing the rest of the property. Your master key continues to work.
Do you have a shop I can visit?
No. Crenshaw Lock Company is fully mobile and available 24/7, so we do all the work at your property in Cudahy.
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