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Crenshaw Lock

Master Key System in Manhattan Beach · 24/7 mobile

Master Key System in Manhattan Beach, California

Crenshaw Lock Company designs and installs master key and restricted-key systems with key control in Manhattan Beach, California. Our fully mobile locksmiths work 24/7 and come to your property, with no storefront visit needed. For a site walk-through and a plan, call (323) 997-8867.

  • Mobile to your Manhattan Beach 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 Manhattan Beach business, that might mean an office suite near Sepulveda Blvd, a retail space around Metlox Plaza, a property manager's condo portfolio in East Manhattan Beach, or a multi-unit building a few blocks from The Strand. The goal is simple: the right people reach the right doors, and nobody carries more access than they need.

A good system is designed on paper before any lock is touched. We map out who needs access to what, then build a hierarchy: individual keys, group keys for departments or floors, and a master key at the top. Restricted keyways add a layer of key control, so a key cannot be copied at a hardware store or by a kiosk. That matters when staff change, tenants turn over, or a contractor needs temporary access.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987 under owner and lead technician David Shar. We are mobile only, so everything happens on site at your building. We can start with a new installation, or rework a tangle of mismatched keys that has built up over the years into one organized system.

How it works in Manhattan Beach

  1. 1

    Walk the property and talk through access

    We come to your building and look at every door, gate, and cabinet that needs a lock. We ask who needs access, when, and who should never have it. A beachside office, a managed condo complex, and a shop at Manhattan Village all call for different answers.

  2. 2

    Design the key hierarchy

    We draft a plan showing change keys, group keys, and the master. You see which person or team opens which doors before any work begins, and we flag places where a design would be risky or overly complicated.

  3. 3

    Choose the keyway and level of key control

    We discuss standard keyways versus restricted ones. A restricted keyway limits who can get duplicates made, which is useful when keys leave the building often, as with tenants, cleaners, or vendors.

  4. 4

    Rekey or replace the hardware

    Where existing locks can be rekeyed into the system, we do that. Where hardware is worn, mismatched, or corroded by coastal air, we replace it with locks that suit the system. Work is done on site.

  5. 5

    Cut, label, and test every key

    We cut the keys, test each one against every door it should and should not open, and record the results. Nothing is handed over until the system behaves exactly as designed.

  6. 6

    Hand over records and a plan for growth

    You receive a key schedule so you know who holds what. We explain how to add doors, issue new keys, or retire a lost one later without having to start over.

Need master key system in Manhattan Beach?

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

Call (323) 997-8867

What affects the price

  • The number of doors, gates, and other openings that need to join the system.
  • How many levels the hierarchy needs, such as individual, group, and master keys, and how many keys each level requires.
  • Whether you choose standard keyways or restricted, patent-protected keyways with stronger key control.
  • The condition of existing hardware: locks that can be rekeyed cost less effort than those that must be replaced, especially if salt air has seized them.
  • The grade and type of locks involved, including mortise, cylindrical, deadbolts, and high-security cylinders.
  • Whether you are starting fresh or expanding and reorganizing an existing system, and any after-hours scheduling you request.

Why Manhattan Beach chooses us

  • Fully mobile service: we come to your property, so there is no shop trip and no storefront to visit.
  • Available 24/7, which helps if a key is lost or a staff member leaves and you need locks secured quickly.
  • Serving Greater Los Angeles and Ventura County since 1987, with owner David Shar leading the technical work.
  • We design the system around how your people actually work, not around a one-size-fits-all kit.
  • Experience with coastal conditions, including corroded hardware that will not hold up in a long-term system.
  • Clear written key records, so you always know who has access and how to change it.

Master Key System across Manhattan Beach

Manhattan Beach is a small, high-value city where properties of very different kinds sit close together. In the Sand Section, walk-street cottages and newer three-story homes are increasingly used as rentals or second homes, and small offices and shops line the streets near the Manhattan Beach Pier and Roundhouse Aquarium. Owners and property managers there often need a system that lets a cleaner, a manager, and a guest each use a different key, with one master for the owner. Salt and sand make hardware choices important near the beach.

Further inland, Sepulveda Blvd, Rosecrans Ave, Manhattan Beach Blvd, and Aviation Blvd carry the commercial and mixed-use buildings that most often call for master keying: offices, medical suites, retail spaces, and multi-tenant buildings. East Manhattan Beach adds townhomes and condos where an association may want common doors, gates, and storage rooms on one organized system. In the Hill Section and Tree Section, large estates and rebuilt homes sometimes want a master key for the owner, with separate keys for staff and contractors, or all doors keyed alike after a remodel.

We serve all of Manhattan Beach, including addresses in ZIP code 90266, and come to wherever the work is, whether that is a business near Metlox Plaza, a property off Marine Ave, or a building close to Polliwog Park. If you are planning a master key system, or want to untangle one that has grown out of control, call (323) 997-8867.

Locked out or need a locksmith now?

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

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Other Manhattan Beach locksmith services

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

Master Key System in Manhattan Beach — FAQs

What is a master key system?
It is a way of keying locks so that each person's key opens only certain doors, while a master key opens all of them. It is common in offices, multi-tenant buildings, and managed properties.
Can you set up a master key system in Manhattan Beach on short notice?
We are 24/7 and fully mobile, so you can call (323) 997-8867 at any time to discuss your needs. The design process takes some planning, but we can move quickly on urgent security issues like a lost master key.
What is a restricted keyway, and do I need one?
A restricted keyway uses a key blank that is not freely sold, so duplicates need authorization. It is worth considering when keys pass through many hands, such as tenants, cleaners, or contractors. We can help you decide.
Can my existing locks be added to a master key system?
Often yes. Many locks can be rekeyed to join a system, though worn or corroded hardware may be better replaced. We check each lock on site and tell you honestly which ones are worth keeping.
We have a coastal property. Does salt air affect a master key system?
It can. Salt and sand corrode and seize exterior hardware, which makes a system unreliable. We take that into account when recommending locks for doors near the beach.
What happens if a master key is lost?
Call (323) 997-8867 as soon as you can. Depending on the system, we may be able to rekey the affected locks or reissue keys without redoing everything, and we can advise on how to limit the risk.
Can I add more doors or keys later?
Yes, a well-planned system is designed to grow. With the key schedule we provide, new doors and keys can be added in a consistent way.
Do I have to come to a shop?
No. We are mobile only and do all work at your property in Manhattan Beach.
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