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Crenshaw Lock

Master Key System in Paramount · 24/7 mobile

Master Key System Installation in Paramount, CA

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

  • Mobile to your Paramount location
  • Available 24/7
  • Price quoted before we start
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A master key system lets different people open different doors with different keys, while one authorized key can open them all. For a Paramount property owner, that might mean a manager who can reach every unit, a shop foreman who can open the yard and the office, and employees who only carry keys to the areas they need. Done well, it cuts down on the ring of mismatched keys, and it gives you a clear answer to the question of who can get in where.

Paramount is a practical mix of industrial yards, retail strips, apartment buildings, and neighborhoods of post-war homes, and each setting calls for a different layout. A metal-fabrication shop near the rail and I-710 corridors has different needs than a vendor at the Paramount Swap Meet or a landlord with a small 1960s-era apartment building. We design the system around how your people actually move through the property, not around a one-size chart.

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, so the planning, installation, and key cutting all happen at your location. We can also set up restricted keyways and key control so keys cannot simply be copied at any hardware counter.

How it works in Paramount

  1. 1

    Walk the property and talk through access

    We come to your site and look at every door, gate, and padlock that matters. We ask who needs access to what, who works which shifts, and where you have had problems, such as a past theft or lost keys.

  2. 2

    Design the key hierarchy

    We map out the levels: a grand master if needed, master keys for groups of doors, and individual change keys. We explain the trade-offs plainly, because a larger system offers more flexibility but also needs more careful record keeping.

  3. 3

    Choose hardware and keyway

    We match cylinders and padlocks to each location. Interior offices, exterior gates, and roll-grille locks may need different grades of hardware. If you want copy protection, we discuss restricted keyways with controlled key blanks.

  4. 4

    Install and pin the cylinders

    We rekey or replace cylinders so they work within the system, and we install any new padlocks or latches. Each lock is tested with the keys that should work and the keys that should not.

  5. 5

    Cut and label keys, set up key control

    We cut the keys, mark them with a code that does not reveal the lock, and record who holds what. We also talk through how to authorize duplicates and what to do when someone leaves.

  6. 6

    Plan for growth and changes

    Businesses change. We explain how the system can be expanded later, so adding a door, a tenant, or a new employee does not mean starting over.

Need master key system in Paramount?

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What affects the price

  • The number of doors, gates, and padlocks that need to be part of the system.
  • How many levels the hierarchy has, such as master only versus a grand master with several sub-masters.
  • Whether you want a restricted keyway with controlled key duplication, or a standard keyway.
  • The grade and type of hardware needed, from interior office cylinders to heavy-duty padlocks for an outdoor material yard.
  • How many keys must be cut and whether any existing locks can be reused or must be replaced.
  • The time of day or day of the week of the visit, since we work 24/7 and urgent after-hours jobs differ from planned daytime installs.

Why Paramount chooses us

  • We are fully mobile, so the whole job is done at your property, with no need to bring locks to a shop.
  • Owner and lead tech David Shar has been in the trade since 1987, and that experience goes into how we design a system.
  • We design around your real workflow and explain the trade-offs of master keying, including the security downsides of oversized systems.
  • We handle both the planning and the hardware, from interior cylinders to gate latches and roll-grille padlocks.
  • We help you set up simple key control habits so the system stays secure after we leave.
  • We are available 24/7, so urgent rekeys after a theft or a lost master key do not have to wait for business hours.

Master Key System across Paramount

Paramount grew from the historic Clearwater and Hynes communities, and that history shows in the mix of properties we see. Along Paramount Boulevard, retailers and small offices often need a simple master system so owners, managers, and staff each have the right level of access. In the 90723 ZIP code, many business owners also run storefronts that share a building with neighbors, which makes clean key control especially useful.

The industrial side of town is just as important. Metal-finishing and fabrication shops near the rail corridor and I-710 often have a material yard, a shop floor, and an office, each needing a different level of security. After a theft, a common request is heavy-duty padlocks and a new keyed gate latch, all tied into a single system so the foreman can open everything without carrying a dozen keys. We reach these sites from Rosecrans Ave, Alondra Blvd, Somerset Blvd, and Lakewood Blvd, and from the SR-91 and I-710.

We also work with vendors at the Paramount Swap Meet and retailers who need booth or storefront rekeys and roll-grille padlocks that match a single key. For landlords with 1960s-80s apartment buildings, a master system can give the manager access to common areas and units while keeping each tenant's key limited to their own door. Call (323) 997-8867 any time and we will talk through your property.

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Other Paramount locksmith services

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

Master Key System in Paramount — FAQs

What is a master key system?
It is a lock setup where each door has its own key, and one or more higher-level keys can open multiple doors. It reduces the number of keys people carry while keeping access organized.
Can you install a master key system at my Paramount business?
Yes. We are a mobile locksmith, so we come to your shop, store, or building in Paramount and do the work on site. Call (323) 997-8867 to describe your property.
What is a restricted key system?
A restricted system uses a keyway and key blanks that are controlled, so copies generally cannot be made without authorization. It is a good fit for sites that worry about unauthorized duplication.
Can my existing locks be part of the system?
Often, yes. Many existing cylinders can be rekeyed to fit the new hierarchy, though some older or worn hardware is better replaced. We check each lock on site and tell you what makes sense.
Will a master key system work for padlocks and gates?
It can. Many padlocks and gate latches can be keyed into the same system, which is helpful for a material yard or roll-grille setup. We choose hardware suited to outdoor and heavy-duty use.
Is a master key system less secure than separate keys?
A master key adds some complexity, so it needs good key control. We keep systems appropriately sized and help you track who holds which key. Call (323) 997-8867 if you want to talk through the trade-offs.
Do you offer help after a theft or lost master key?
Yes. We are available 24/7, and we can rekey affected locks, replace padlocks, and rebuild your key hierarchy so lost keys no longer work.
Do you have a shop I can visit in Paramount?
No, we are mobile only. We come to your location for planning, installation, and key cutting.
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