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Crenshaw Lock

Master Key System in Lomita · 24/7 mobile

Master Key System in Lomita, California

Crenshaw Lock Company designs and installs master key and restricted key systems for Lomita, California properties, with key control built in. We are fully mobile and available 24/7, so we come to your building. Call (323) 997-8867 to talk through your doors, tenants, and who needs access to what.

  • Mobile to your Lomita 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 many different keys open their own doors while one or more higher-level keys open several of them. For a property owner, that means a manager can carry one key instead of a heavy ring, tenants and staff only get the access they need, and a lost key does not force you to replace every lock in the building. Done carefully, it replaces a tangle of mismatched keys with a clear structure you can explain on one page.

Lomita is a small city, about 1.9 square miles, and its buildings reflect that. Many properties here are modest apartment buildings and small complexes from the 1960s through the 1980s, small commercial storefronts along Lomita Boulevard and the Narbonne Avenue corridor, and older single-family homes with detached garages. Each of these has different needs. A four-unit building needs a system that is simple for a manager to run between tenants. A small business needs separate keys for staff, a manager, and the owner. A homeowner may only want a house and garage keyed alike, which is a simpler cousin of the same idea.

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, so every project begins with a conversation and a walk through your property. We help you decide whether you need a full master key hierarchy, a restricted keyway to limit unauthorized copying, or just a cleaner keying plan for what you already have.

How it works in Lomita

  1. 1

    Talk through access needs

    Call (323) 997-8867 and tell us about the property: how many doors, who uses them, and what problems you have now, such as lost keys, former tenants or staff who still hold copies, or a ring of keys nobody can sort out.

  2. 2

    Walk the property and inventory the hardware

    We come to you and look at every door, gate, padlock, and mailbox or utility access point involved. Older post-war hardware may be worn or mismatched, and we note which locks can be rekeyed and which should be replaced.

  3. 3

    Design the key hierarchy

    We map out a plan on paper: which keys open single doors, which open groups of doors, and which top-level key sits with the owner. We explain the tradeoffs, including that adding more levels adds flexibility but also complexity, so you can choose what suits you.

  4. 4

    Choose key control level

    You decide how tightly keys should be controlled. A restricted keyway limits who can get duplicates, while a standard keyway is easier to copy anywhere. We help you match the level of control to the risk and your budget.

  5. 5

    Install and rekey on site

    We install or pin the locks to the new plan, then test every key against every door it should and should not open. Because we are mobile, the work happens at your property, often while the building stays in normal use.

  6. 6

    Document and hand off

    You receive a clear key schedule, and we talk through how to issue keys, track them, and handle a lost one. That record is what makes the system manageable for years after the install.

Need master key system in Lomita?

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What affects the price

  • The number of doors, padlocks, and other locks included in the system, and how many separate keys each user group needs.
  • How many levels the hierarchy has, since a simple two-level setup is less involved than a multi-tier plan with several managers or departments.
  • Whether existing hardware can be rekeyed or must be replaced, which depends heavily on the age and condition of the locks.
  • The key control level you choose, such as a restricted keyway with limited duplication versus a conventional keyway.
  • The quantity of keys cut at the start, and whether you expect to add doors or tenants later so the system can grow.
  • Whether the work is scheduled in advance or requested after hours, since we are available 24/7 and can adapt to your building's schedule.

Why Lomita chooses us

  • Fully mobile: we bring the tools and key-cutting capability to your Lomita property rather than asking you to visit a shop, because we have no storefront.
  • Serving Los Angeles and Ventura County since 1987, with owner and lead technician David Shar involved in how the business works.
  • We plan the key hierarchy with you on paper first, so you understand who can open what before any lock is changed.
  • We are honest about when a master key system is overkill. A single-family home may only need keyed-alike locks, and we will say so.
  • We test every key against every door, then give you a key schedule so the system is documented, not just installed.
  • Available 24/7, so work can be scheduled around business hours, tenant turnover, or an urgent security concern.

Master Key System across Lomita

Lomita's buildings are well suited to thoughtful key planning. Along Lomita Boulevard and in the City Center area, small apartment complexes often rely on a manager who rekeys a unit or replaces a laundry-room padlock between tenants. A master key system lets that manager open the units and common spaces with one key while each tenant holds only their own. In the 90717 ZIP code, many of these buildings date from the 1960s to the 1980s, so hardware condition varies and we check it door by door.

The Narbonne Avenue corridor mixes small commercial spaces with older homes. A 1950s single-family house off Narbonne may simply need worn exterior deadbolts replaced and the house keyed alike with the detached garage, which is a straightforward form of key planning. Business owners along the corridor often want separate keys for staff, a manager, and the owner, with a restricted keyway so copies cannot be made casually. In Harbor Hills, the housing area and nearby parcels near the foothills sometimes include gates, outbuildings, and shared access points that benefit from a single organized scheme.

Lomita sits at the gateway to the Palos Verdes Peninsula, and many residents and workers travel between Pacific Coast Highway, Western Avenue, and the gated communities uphill. Keys for mailboxes, community gates, and homes can pile up, and a well-planned system, along with proper duplication, keeps things manageable. Whether you are near Lomita Park, the Lomita Railroad Museum, or elsewhere in town, we come to you at any hour. Call (323) 997-8867.

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Other Lomita locksmith services

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

Master Key System in Lomita — FAQs

What is a master key system?
It is a keying plan where each lock has its own key, and one or more higher-level keys open groups of locks. It reduces the number of keys managers carry while keeping each user's access limited to what they need.
Do I need a master key system for a small Lomita apartment building?
Often it helps. A manager who handles several units, a laundry room, and common doors can use one master key while tenants hold only their own. Call (323) 997-8867 and we can tell you honestly whether it fits your building.
What is a restricted key system?
It uses a protected keyway so duplicates generally can only be made through an authorized process. It makes casual copying much harder and is useful when you want real key control for staff or tenants.
Can you key my house and detached garage alike?
Yes. Keying a home and its detached garage to one key is a simple version of key planning. If your exterior deadbolts are worn, we can replace them at the same visit.
Can you add to the system later?
Usually yes, if the system is planned with growth in mind. Tell us about future doors or tenants during design so we can leave room in the hierarchy. You can reach us at (323) 997-8867.
What happens if a key is lost?
With a master key system, you can often rekey only the affected lock or group rather than the whole building. A lost master key is more serious and may require rekeying more locks, which is why we document the key schedule.
Do you have a shop I can visit in Lomita?
No. We are fully mobile with no storefront, so we come to your property. We are available 24/7.
Will my existing locks work in a master key system?
Sometimes. Many locks can be rekeyed into a system, but older or worn hardware may need replacement. We inspect each door on site and tell you which is which.
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