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Crenshaw Lock

Master Key System in Santa Monica · 24/7 mobile

Master Key System Installation in Santa Monica, CA

Crenshaw Lock Company designs and installs master key and restricted-key systems with key control for Santa Monica apartment buildings, offices, and retail properties. We are fully mobile and available 24/7, and we come to your site. Call (323) 997-8867 to plan your system.

  • Mobile to your Santa Monica location
  • Available 24/7
  • Price quoted before we start
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A master key system lets the right people open the right doors with the fewest keys possible. A manager might carry one key that opens every unit or suite, while each tenant or employee carries a key that opens only their own door. Done well, it cuts down on key rings, speeds up property management, and gives you a clear record of who can get in where. Done badly, it creates confusion, and a lost master key becomes a serious headache.

Santa Monica has a mix of properties where this matters. Rent-controlled apartment buildings see regular tenant turnover, so rekeying is a recurring chore. Mixed-use buildings downtown combine retail, offices, and residences under one roof. Storefronts near the Third Street Promenade and professional offices along Wilshire Blvd and Montana Ave often have several people who need partial access. A planned system handles all of this far better than a drawer of loose, unlabeled keys.

Crenshaw Lock Company has been serving Greater Los Angeles and Ventura County since 1987, led by owner and lead technician David Shar. We are mobile only, with no storefront to visit. We meet you at your building, walk the doors, talk through who needs access to what, and then design a system that fits your property and the way you manage it.

How it works in Santa Monica

  1. 1

    Walk the property and list the doors

    We come to your building and go through every door and lock that will be part of the system: unit doors, common areas, utility rooms, storage, offices, and gates. We note the hardware already in place, its condition, and any salt-air corrosion that may need replacing before it can be rekeyed reliably.

  2. 2

    Map out who needs access

    We talk through your access structure. Who needs one door, who needs a floor, and who needs everything? This becomes a key hierarchy, usually with individual keys, group keys, and a master. For a property with frequent turnover, we also plan how future rekeys will fit into the system.

  3. 3

    Choose the keyway and level of key control

    Standard keys can be copied at almost any hardware counter. A restricted keyway limits duplication to authorized requests, which is helpful when you need to know how many keys exist. We explain the options and help you pick the level of control that makes sense for your property and budget.

  4. 4

    Install and pin the locks

    We install new cylinders or rekey existing ones so that each lock responds to its own key and to the keys above it in the hierarchy. Because we are mobile, the work is done on site, and we aim to keep doors secured throughout, including occupied buildings.

  5. 5

    Test every door and cut the keys

    Before we leave, we test each key on each lock it should open and on those it should not. We then cut and label the working keys and hand over the master set to the person you designate.

  6. 6

    Document the system and plan for changes

    We provide a clear key schedule describing the hierarchy, so future staff do not have to guess. If a master key is lost or a tenant moves out, we can rekey the affected locks without redoing the whole building.

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What affects the price

  • The number of doors and cylinders included in the system, since each lock needs to be keyed or replaced.
  • How many levels the hierarchy has, from single-door keys through group keys to a grand master.
  • Whether you want a standard keyway or a restricted keyway with duplication control.
  • The condition of existing hardware, especially exterior deadbolts, padlocks, and gate latches affected by salt air, which may need replacing rather than rekeying.
  • The types of doors involved, such as aluminum storefronts, wood apartment doors, or gates, which can need different cylinders.
  • Whether work is planned in advance or needed urgently after a lost master key, including after-hours scheduling.

Why Santa Monica chooses us

  • We are fully mobile and available 24/7, so we can work at your building rather than asking you to bring locks anywhere.
  • Our history in the area goes back to 1987, and the work is led by owner David Shar, so you deal with someone who knows the trade directly.
  • We design systems around how a property is actually managed, including turnover in rent-controlled buildings, rather than selling a one-size-fits-all setup.
  • We check for hardware that salt air has weakened and tell you plainly when replacing is smarter than rekeying.
  • We leave you with a written key schedule so the system remains understandable after the installation is finished.

Master Key System across Santa Monica

Santa Monica properties have their own quirks. In Ocean Park and Sunset Park, many 1920s Craftsman and Spanish bungalows and mid-century courtyard apartments sit close to the coast, where salt air can seize exterior deadbolts, padlocks, and gate latches. When a landlord wants to put a courtyard building on a master key system, we often find that the old hardware has to be replaced first, because corroded cylinders will not pin reliably. Landlords with several buildings near Pico Blvd or Lincoln Blvd can have the same hierarchy applied across them.

Near Montana Ave and North of Montana, rent-controlled apartment stock means regular changes between tenants. A master key system makes that easier: the unit can be rekeyed so the previous tenant's key no longer works, while the manager's key keeps working. Downtown, newer mixed-use condos usually rely on fobs and intercoms for building entry, but unit doors, storage rooms, and back-of-house doors still benefit from a planned mechanical key system. Retail and office spaces around the Third Street Promenade, Santa Monica Place, and Bergamot Station often have aluminum storefront doors that need cylinders suited to their narrow stiles.

We serve all Santa Monica ZIP codes, including 90401 downtown, 90402 North of Montana, 90403, 90404 near Pico and Bergamot, and 90405 around Ocean Park and Sunset Park. Whether you are near Santa Monica College, Wilshire Blvd, or just off I-10 at the coast, call (323) 997-8867 and we will come to you.

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Other Santa Monica locksmith services

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

Master Key System in Santa Monica — FAQs

What is a master key system?
It is a lock and key arrangement where each lock has its own key, and one or more higher-level keys open several or all of the locks. Managers can open everything they are responsible for while each tenant or employee only opens their own door.
Can you convert my existing locks to a master key system?
Often yes. Many quality cylinders can be rekeyed into a system. Worn or corroded hardware, which is common near the coast in areas like Ocean Park, may need to be replaced first. Call (323) 997-8867 and we can look at what you have.
What is a restricted key system?
It uses a keyway that is controlled, so keys cannot be casually duplicated at ordinary key counters. It gives you better key control and a clearer count of who holds keys.
What happens if a master key is lost?
The locks it opens may need to be rekeyed so the lost key no longer works. Because the system is planned, this can often be done for the affected locks without rebuilding everything. Call (323) 997-8867 and we will help you work out the scope.
Is a master key system a good fit for a rent-controlled apartment building?
It can be very helpful. With regular tenant turnover, each unit can be rekeyed for the new tenant while the manager's key continues to work, and old tenant keys stop working.
Do you work after hours?
Yes. We are available 24/7 and fully mobile, so urgent situations, such as a lost master key, can be addressed outside normal business hours.
Do I need to visit your shop?
No. We are mobile only, with no storefront. We come to your property in Santa Monica to assess, install, and test the system.
Can a master key system work with fobs or intercoms?
Yes. Many buildings use fobs or intercoms for main entry and a mechanical master key system for unit doors, storage, and service rooms. We can design the mechanical part to work alongside what you already have.
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