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Crenshaw Lock

Master Key System in South Pasadena · 24/7 mobile

Master Key System in South Pasadena, California

Crenshaw Lock Company designs and installs master key and restricted-key systems in South Pasadena, California, with real key control. We are a 24/7, fully mobile locksmith, so we come to your building. For a walkthrough and a plan built around your doors, call (323) 997-8867.

  • Mobile to your South Pasadena 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 the right people open the right doors with the fewest keys possible. An owner might carry one key that opens every unit, a manager might carry a key for a single floor, and an employee might carry a key for only the front door and supply room. Done well, it cuts down on key rings that weigh a pound, on guessing who has what, and on rekeying an entire building every time someone leaves. Done poorly, it creates weak points, so the design matters more than the hardware.

South Pasadena presents a particular mix of buildings. Mission Street and Fair Oaks Avenue have small-shop storefronts, many with older commercial locks that have been through several tenants. Nearby, the city's Craftsman bungalows, Victorians and 1920s Spanish and period-revival homes often have original rim and mortise hardware, and some owners manage rentals, guest houses or home offices on the same property. Each of these situations calls for a different level of key control, and we plan around the building you actually have rather than a stock package.

We are a mobile-only business, with no storefront to visit, and we have served Greater Los Angeles and Ventura County since 1987 under owner and lead technician David Shar. We bring the tools, pinning equipment and cylinders to your site, walk the doors with you, and set up a system you can understand and maintain. We never quote over the phone without knowing what is on your doors, because the honest answer depends on what we find.

How it works in South Pasadena

  1. 1

    Walk the property and list every door

    We start by visiting and counting every lock that needs to be part of the system: front and back doors, storerooms, offices, utility closets, gates and any rear alley entrances. We note the brand, condition and whether each lock can be rekeyed or should be replaced, which is common with worn commercial hardware on older storefronts.

  2. 2

    Decide who needs access to what

    We sit down with you and map out the key hierarchy. That usually means a grand master or master for owners and managers, group keys for departments or tenants, and individual change keys for single doors. We also talk about who should never be able to copy a key, because that determines whether a restricted keyway makes sense.

  3. 3

    Choose the right keyway and level of key control

    A standard keyway can be copied at almost any hardware counter. A restricted keyway limits duplication to authorized requests, which is worth considering for shops with inventory, offices with records, or multi-unit properties. We explain the tradeoffs plainly, including what it means for ordering future keys.

  4. 4

    Pin, install and test the cylinders

    We build the cylinders to your key chart, install them on site, and test every key on every lock it should and should not open. Cross-keying mistakes are the most common flaw in a poorly built system, so we check the failures as carefully as the successes.

  5. 5

    Hand over the key chart and ground rules

    You receive a clear record of the key hierarchy, how keys are stamped or tracked, and how to request additional keys. We recommend a simple sign-out habit for master keys so you can answer who holds what when a staffing change happens.

  6. 6

    Support changes as the business changes

    Tenants turn over, staff leave and keys go missing. Because we are available 24/7 and come to you, we can rekey a single door or extend the system to new spaces without starting from scratch, as long as the original design left room to grow.

Need master key system in South Pasadena?

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What affects the price

  • The number of doors and cylinders included in the system, since each one needs to be keyed to the chart.
  • The depth of the hierarchy: a simple master and change keys is a lighter job than a grand master with several group levels.
  • Whether you want a standard keyway or a restricted keyway with controlled duplication.
  • The condition of existing hardware, including whether older locks can be rekeyed or need replacing to accept new cylinders.
  • How many keys you need cut for each level, and whether they should be stamped or tracked.
  • Timing and site conditions, such as after-hours work, multiple buildings or doors that are difficult to access.

Why South Pasadena chooses us

  • Fully mobile service: we come to your shop, office or property and work on the actual doors, with no storefront detour.
  • Experience since 1987 under owner and lead technician David Shar, which includes older mortise and rim hardware like what you find in period buildings.
  • System design before sales: we ask who needs access to what before recommending any hardware.
  • We test for keys that open too much, not just keys that work, which is where cheaper master key jobs tend to fail.
  • Available 24/7, so lost master keys and urgent rekeys do not have to wait for business hours.
  • Plain explanations of restricted keyways, including the tradeoffs, so you can decide how much key control suits your building.

Master Key System across South Pasadena

South Pasadena is compact, walkable and dense with small businesses, which shapes how master key systems get used here. Along Mission Street near Mission West antique row and the Metro A Line Mission station, shop owners often share a building with a few other tenants, or manage a storefront plus a back stockroom and an upstairs office. A master key system lets the owner or landlord keep access to common areas while each tenant controls their own door. Around Fair Oaks Avenue and the Fair Oaks Pharmacy block, older storefronts often have dated commercial locks that have been passed through many hands, and starting a system fresh is a good moment to clear out keys nobody can account for.

Residential owners in Monterey Hills and Altos de Monterey sometimes need a system too, particularly for larger properties with guest houses, studios, gates, garages and rental units. Because South Pasadena is a frequent film and TV location, some owners also want a clean way to hand temporary access to production crews, then reset it afterward. A well-planned key hierarchy, with a separate group key for the areas a crew needs, makes that far simpler than rekeying the whole property each time. Craftsman bungalows and period-revival homes near Garfield Park and the Farmers Market often still have original hardware, and we aim to keep that character intact where we can.

We serve ZIP codes 91030 and 91031, and can reach you whether you are near the I-110 Arroyo Seco Parkway, along Huntington Drive, or on Fremont Avenue. We are fully mobile and available around the clock. To plan a master key system for your South Pasadena property, call (323) 997-8867.

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Other South Pasadena locksmith services

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

Master Key System in South Pasadena — FAQs

What is a master key system?
It is a set of locks keyed so that different keys open different combinations of doors. A master key opens many or all locks, while change keys open only one. It reduces how many keys people carry while keeping control over who can go where.
Is a master key system a good fit for a South Pasadena shop on Mission Street?
Often yes, especially if you have a front door, stockroom, office and rear entrance, or share a building with other tenants. It lets you give staff limited access while the owner or landlord keeps broader access. Call (323) 997-8867 and we can talk through your layout.
What does a restricted keyway do?
A restricted keyway uses a key blank that is not freely sold, so copies generally require authorization. That gives you better control over who can duplicate keys. It is useful for businesses with valuable inventory or records, and for multi-unit properties.
Can you build a system around old Craftsman or mortise hardware?
Often we can rekey or work with original rim and mortise hardware to preserve a home's character, though some worn locks may be better replaced. We inspect each door and tell you which is which before any work begins.
Can a master key system help with film or production access at my home?
Yes. A group key for the areas a crew needs, kept separate from your personal keys, makes it easier to hand out and then reset access after a shoot. Call (323) 997-8867 to discuss a setup for your property.
What happens if a master key is lost?
A lost master key is a real security concern, because it opens many doors. We can assess the risk, and depending on the design, rekey affected cylinders or change the hierarchy. We are available 24/7 because this should not wait.
Do you have a shop I can visit?
No. We are fully mobile and come to your South Pasadena location, so the work is done on your actual doors with the actual hardware in front of us.
How is the cost of a master key system determined?
It depends on the number of doors, the depth of the key hierarchy, keyway type, hardware condition and how many keys you need. We prefer to see your doors first, then explain the factors honestly rather than guess.
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