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Crenshaw Lock

Master Key System in Acton · 24/7 mobile

Master Key System Design and Installation in Acton, CA

Crenshaw Lock Company designs and installs master key and restricted-key systems with key control for Acton, California properties. We are a fully mobile locksmith available 24/7, and we come to your parcel, barn, or business. Call (323) 997-8867 to plan a system that fits your property.

  • Mobile to your Acton location
  • Available 24/7
  • Price quoted before we start
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A master key system lets one key open many locks while other keys open only specific doors. On a typical Acton property that might mean the owner carries one key for the house, barn, tack room, well house, and gate, while a ranch hand, trainer, or tenant carries keys that open only what they need. Done well, it replaces the jangling ring of mismatched padlock keys with something organized and accountable.

Acton is spread out. Properties sit on large lots, buildings are detached, and the nearest hardware store can be a real drive. That changes how a key system should be planned. We look at how people actually move across your land: who needs the shop, who needs the stable, who needs the guest house, and who should never have access to the office or the equipment storage. The design follows those answers, not a generic template.

We have served Greater Los Angeles and Ventura County since 1987, led by owner David Shar. We are fully mobile, so there is no storefront to visit. We come out, assess your doors, gates, and outbuildings, and build a system that you can expand later as your property or business grows.

How it works in Acton

  1. 1

    Walk the property and list every lock

    We come to you and go through every opening: house doors, gates, barns, tack rooms, sheds, well houses, workshops, and any commercial or rental units. We note what hardware is already there, what condition it is in, and what is exposed to dust, weather, and rust.

  2. 2

    Map who needs access to what

    We sit down with you and sort people into access levels: owner, manager, employees, trainers, tenants, vendors, and occasional visitors. This becomes the hierarchy for the system, with a top master key, sub-masters where useful, and individual change keys.

  3. 3

    Choose hardware and key control level

    Some properties are well served by a standard master-keyed system. Others benefit from restricted keyways, where duplicates cannot be cut at a typical key shop without authorization. We explain the tradeoffs in plain terms, including how each option handles outdoor buildings and padlock use.

  4. 4

    Rekey or replace the locks

    We pin or install cylinders to match the plan, replacing worn or rusted hardware where needed. Weather-exposed barn and shed locks are chosen for durability, and we flag any hasps that are too corroded to hold a good lock.

  5. 5

    Cut keys, test every door, and label the system

    We cut the keys, test each one on every lock it should and should not open, and give you a clear record of the key hierarchy so you know who holds what.

  6. 6

    Set up key control for the long term

    We talk through issuing keys, tracking them, and what to do when someone leaves. If you add buildings or hire staff later, we can extend the system rather than starting over.

Need master key system in Acton?

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

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What affects the price

  • The number of locks and doors included, including outbuildings, gates, and padlocks.
  • The level of key control you choose, such as standard keyways versus restricted, patent-protected keyways.
  • The number of access levels and keys needed, including sub-masters and individual change keys.
  • The condition of existing hardware and whether rusted or worn locks and hasps need replacement.
  • Weather-resistant or higher-security hardware for exposed barns, sheds, and gates.
  • Travel distance across a rural parcel or to a remote part of Acton, and the time needed to service several widely spaced buildings.

Why Acton chooses us

  • We are fully mobile and work on-site, so we see your actual gates, barns, and doors before recommending hardware.
  • We have been in business since 1987, with owner David Shar leading the work, so system design draws on decades of real installations.
  • We plan for rural conditions: dust, heat, rust, and long distances between buildings shape the hardware we recommend.
  • We explain the security tradeoffs honestly, including when a simple rekey is enough and when a restricted system is worth it.
  • You get a clear key hierarchy record so the system stays manageable as people come and go.
  • We are available 24/7, so if a key is lost or a lock fails on your property, you can call and get help.

Master Key System across Acton

Acton properties tend to be larger and more varied than what you see in town. In the Acton townsite you will find older ranch houses and small commercial buildings, while Crown Valley, Aliso Canyon, and Soledad Canyon include custom homes on acreage, equestrian estates, and manufactured or modular homes. A master key system can tie together the house, a detached barn, a tack room, a well house, and a gated driveway, all under a single organized scheme in ZIP code 93510.

Horse properties off Soledad Canyon Rd are a good example of where this pays off. Padlocks on barns and tack rooms take a beating from dust and weather, and a seized lock on a rusted hasp is a common headache. Moving those buildings onto a keyed system with weather-appropriate hardware means fewer mismatched keys and less scrambling when a lock sticks. For long rural parcels with an access road, we can also look at how the gate lock or keypad fits into the overall key plan.

We travel throughout the area, including along CA-14, Sierra Highway, Crown Valley Rd, and Aliso Canyon Rd. Because parcels can be far apart, we recommend giving good directions and gate information when you call. Whether you manage a ranch near Escondido Canyon, a rental close to the Acton KOA, or a business near the Metrolink Acton station, call (323) 997-8867 to talk through your setup.

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Other Acton locksmith services

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

Master Key System in Acton — FAQs

What is a master key system?
It is a lock arrangement where each lock has its own key, and one or more higher-level keys open multiple locks. For example, an owner key might open every building on your Acton property while a worker key opens only the barn.
Can a master key system include barns, sheds, and gates?
Yes. We can include outbuildings, gates, and padlocks in a system by choosing compatible hardware. Weather-exposed locks should be built for outdoor use, and we will tell you if an old hasp needs replacing. Call (323) 997-8867 to discuss your buildings.
What is a restricted key system?
A restricted system uses keyways that are controlled, so duplicate keys generally cannot be cut at an ordinary key shop. It gives you better control over who can copy a key, which matters for rentals, staff, and shared properties.
Do you offer this service at night or on weekends?
We are a 24/7 mobile locksmith. System design is usually planned in advance, but if a lock fails or a key goes missing, you can call (323) 997-8867 at any time.
Can you work with the locks I already have?
Often we can rekey existing quality locks into the system. Worn, rusted, or mismatched hardware may need replacement. We assess this on-site and tell you what is worth keeping.
Do you have a shop I can visit?
No. We are fully mobile and come to your property or business in Acton. That lets us look at your real doors, gates, and outbuildings.
What affects the cost of a master key system?
Mainly the number of locks, the level of key control, how many access levels you need, the condition of current hardware, and travel across a spread-out parcel. We do not quote without understanding your property.
Can the system be expanded later?
Usually yes, if it is planned that way from the start. We design with room for new buildings, tenants, or staff. For help extending a system, call (323) 997-8867.
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