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Crenshaw Lock

Master Key System in San Fernando · 24/7 mobile

Master Key System in San Fernando, California

Crenshaw Lock Company designs and installs master key and restricted-key systems in San Fernando, California. We are a fully mobile locksmith, available 24/7, and we come to your building. Call (323) 997-8867 to talk through your doors, your users, and how you want keys controlled.

  • Mobile to your San Fernando 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 different people open different doors with different keys, while one authorized key can open them all. For a property manager, a business owner, or a church or school, that means a tenant or employee carries one key instead of a ring of them, and the owner keeps clear control over who can go where. A restricted-key system adds another layer: the key blanks are protected, so copies cannot be cut at a hardware counter without authorization.

San Fernando is a small city with a lot of variety packed into it. Along San Fernando Road and the San Fernando Mall you find early-1900s brick storefronts with older commercial doors and transoms. A few blocks away are bungalows, Spanish-style homes, and postwar tracts, along with municipal buildings and small multi-unit properties. Each of these asks for a different approach to key control, and a system that suits a new office suite may not suit a century-old storefront door.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, under owner and lead technician David Shar. We are mobile only, with no storefront to visit, so planning, installation, and key setup all happen at your property. We would rather learn how your building actually works before recommending a system than hand you a one-size-fits-all package.

How it works in San Fernando

  1. 1

    Walk the property and list every door

    We start by visiting the site and going through each opening: exterior doors, suite doors, storage rooms, utility closets, gates, and any older storefront or mortise hardware. We note what is already installed and what condition it is in.

  2. 2

    Map out who needs access to what

    Together we decide the hierarchy. Typically that means a grand master for the owner, master keys for managers or departments, and change keys for individual users. We talk through staff turnover, tenant changes, and contractors, since those shape how the system should be built.

  3. 3

    Choose hardware and key control level

    We pick cylinders and keyways that fit your doors and your security goals. If copies should not be cut freely, we discuss restricted keyways with controlled blanks. For older doors with mortise cases or storefront hardware, we check that compatible cylinders are available before committing.

  4. 4

    Install and pin the cylinders

    We install or rekey the cylinders on site and pin them to the planned key hierarchy. Each lock is tested with the keys that should open it, and with the ones that should not, so the layout works as designed.

  5. 5

    Cut keys and document the system

    We cut and label the keys, then give you a key schedule showing which key opens which doors. Keeping this record current is what makes a master key system manageable years later.

  6. 6

    Plan for changes and expansion

    Tenants leave, staff change, and keys go missing. We explain how to rekey single doors without redoing the whole system and how to add doors later while keeping the hierarchy intact.

Need master key system in San Fernando?

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 doors and cylinders included in the system.
  • How many levels the hierarchy needs, such as grand master, master, and individual change keys.
  • Whether you want standard keyways or a restricted keyway with controlled key blanks.
  • The condition and type of existing hardware, especially older mortise locks or storefront doors that may need repair or specific cylinders.
  • How many keys need to be cut and whether new key control documentation is wanted.
  • Whether the work is scheduled in advance or needed urgently after hours.

Why San Fernando chooses us

  • Fully mobile service: we do the survey, installation, and key cutting at your building, not at a counter.
  • In business since 1987, which includes plenty of experience with older commercial doors and mixed-age buildings.
  • Available 24/7, so a lost master key or a sudden staff departure does not have to wait until Monday.
  • We design around how your people actually use the building, rather than selling a standard package.
  • We hand over a written key schedule so you understand your own system and can manage it later.
  • Hardware advice that respects older buildings, so a historic door can be kept and secured instead of replaced by default.

Master Key System across San Fernando

Downtown San Fernando is a good example of why master key planning has to be local. Around the San Fernando Mall, at Truman Street and San Fernando Road, many buildings date to the early 1900s, with brick fronts, transoms, and older commercial hardware. When a storefront changes hands, the new owner often wants every lock rekeyed, and that is a natural moment to set up a proper key hierarchy for the shop, back room, and storage areas.

Residential areas have their own needs. Near Las Palmas Park and around the Layne Park and Recreation Park area, you will find bungalows, craftsman and Spanish homes, and small multi-unit buildings. Landlords and owners of small rental properties in ZIP code 91340 can use a master key system so that a manager can reach shared areas, laundry rooms, and utility closets without carrying a separate key for every one, while tenants only have access to their own doors.

San Fernando is its own city, surrounded by Los Angeles, and easy to reach by San Fernando Road, Maclay Avenue, Brand Boulevard, I-5, and CA-118. We serve businesses and properties near City Hall, the Lopez Adobe, and the surrounding blocks. Call (323) 997-8867 to schedule a site visit.

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Other San Fernando locksmith services

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

Master Key System in San Fernando — FAQs

What is a master key system?
It is a lock and key arrangement where each door has its own key, and higher-level keys can open multiple doors. For example, a manager's key might open all suites while each tenant's key opens only their own. Call (323) 997-8867 to discuss a layout for your building.
What is the difference between a master key system and a restricted key system?
A master key system is about how keys relate to doors. A restricted keyway is about who can get copies made. Many properties use both, so keys cannot be duplicated casually at a hardware store.
Can you install a master key system in an old San Fernando downtown storefront?
Often yes. We first examine the existing door, mortise case, or storefront hardware and confirm compatible cylinders exist. Call (323) 997-8867 and we can look at the building with you.
Do you have a shop I can visit?
No. Crenshaw Lock Company is fully mobile, so we come to your property in San Fernando for the survey, installation, and key cutting.
Is a master key system a good fit for a small rental property?
It can be. Owners of small multi-unit buildings use one to give a manager access to common areas while keeping each tenant's unit separate. The right design depends on how many doors and users are involved.
What happens if a master key is lost?
Depending on the system, we may be able to rekey the affected cylinders or the entire hierarchy. Acting quickly matters. We are available 24/7 at (323) 997-8867.
Can I add more doors to the system later?
Usually, yes, as long as the system was planned with room for expansion. We keep a key schedule so new doors can be pinned into the existing hierarchy.
How is the cost of a master key system determined?
It depends on the number of doors, levels of access, keyway type, existing hardware condition, and the number of keys needed. We explain these factors during the site visit so you know what drives the scope.
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