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Crenshaw Lock

Master Key System in Maywood · 24/7 mobile

Master Key System Installation in Maywood, California

Crenshaw Lock Company designs and installs master-key and restricted-key systems with key control in Maywood, California. Our fully mobile locksmiths are available 24/7 and come to your property. For landlords, shops, and multi-unit buildings, call (323) 997-8867 to plan a system that fits.

  • Mobile to your Maywood location
  • Available 24/7
  • Price quoted before we start
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A master key system lets one key open many doors while each door still has its own key. In a city like Maywood, that matters. Many properties here are older bungalows split into several units, 1950s and 60s apartment courts, and small businesses along Atlantic Boulevard and Slauson Avenue. Owners and managers often carry a ring of mismatched keys, some copied years ago by people nobody can identify.

A properly designed system replaces that confusion with a plan. Each tenant gets a key that opens only their unit. A manager or maintenance person gets a key that opens the units they are responsible for. An owner holds a top-level key. Restricted keyways and key control add a layer on top, so keys cannot be casually duplicated at a hardware counter.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, led by owner and lead technician David Shar. We are mobile only, with no storefront, so every consultation happens at your property, where we can look at the actual doors, hardware, and how people move through the building.

How it works in Maywood

  1. 1

    Walk the property and learn how it is used

    We come to your building and look at every door that will be on the system: unit doors, laundry rooms, storage, gates, offices, and utility closets. We ask who needs access to what, how often tenants turn over, and who currently holds keys.

  2. 2

    Design the key hierarchy

    We map out the levels: individual change keys, group or floor keys, a master key, and a grand master if the property needs one. For a subdivided bungalow, this might be as simple as separate keys per unit plus one landlord key. For a larger court, we plan for growth.

  3. 3

    Check and upgrade the hardware

    Not every lock can be mastered. Worn original mortise locks, add-on rim locks, and mismatched deadbolts may need to be rekeyed, replaced, or swapped for cylinders that accept a master pinning. We tell you what can be reused and what should not be.

  4. 4

    Choose a keyway and key control level

    You decide between a standard keyway and a restricted one. Restricted keyways limit who can get duplicates, and we explain what that means in practice: who is authorized, how copies are requested, and what records you keep.

  5. 5

    Pin, install, and test every cylinder

    We pin the cylinders to the plan, install them, and test each key against each door, including checking that no change key opens a neighbor's unit. Gate and security-bar padlocks can be added to the system where practical.

  6. 6

    Hand over keys and records

    You receive the keys, a clear key schedule showing what opens what, and guidance on tracking who holds each key. When tenants move out, the system is designed so a single cylinder can be rekeyed without redoing the entire building.

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What affects the price

  • The number of doors and cylinders included in the system, since each lock must be pinned and tested.
  • How many levels the hierarchy needs: a simple change-key-plus-master setup versus multiple group keys and a grand master.
  • Condition and type of existing hardware, including whether old mortise locks and add-on deadbolts can be mastered or must be replaced.
  • Whether you choose a restricted keyway with key control, which involves specialized cylinders and keys.
  • The number of keys to be cut and any extra padlocks for gates or security bars that should be keyed into the system.
  • Timing and access, such as after-hours work or coordinating around occupied units.

Why Maywood chooses us

  • We are fully mobile, so the system is designed while looking at your real doors rather than from a catalog.
  • We have worked in Southern California since 1987 and are familiar with older stucco bungalows, apartment courts, and small commercial storefronts.
  • We tell you honestly when a lock is too worn to master and should be replaced instead of forcing a poor fit.
  • We think about turnover: systems are planned so one unit can be rekeyed after a move-out without disrupting everyone else.
  • We can include gate and security-bar padlocks so the property is not running on two separate key schemes.
  • You get a written key schedule so the system is understandable to whoever manages the property next.

Master Key System across Maywood

Maywood is a small, dense city of roughly 1.18 square miles, and its building stock shapes how master key systems get used. In the Maywood Ave residential core, many 1920s to 1940s bungalows sit on narrow lots and have been subdivided into several units. A landlord there often needs separate keys per unit, a single landlord key, and the ability to rekey one door after a tenant leaves. Many of these homes still have original mortise locks plus later add-on rim and jimmy-proof deadbolts, so hardware is often mixed and needs review before anything is mastered.

Along the Atlantic Boulevard corridor and the Atlantic Avenue business district, small shops, offices, and mixed-use buildings have different needs: a front door, a back door, a storage room, and perhaps staff who should not have access to the office. In the Slauson Avenue district, similar properties benefit from key control so that former employees or contractors cannot hold a working copy. Properties in ZIP code 90270 near 50th Street and the I-710 side of town often have gates and security bars as well, which we can key into the same system.

We can meet you at the property, whether it is a building near Maywood Riverfront Park, a courtyard complex near the Los Angeles River levee, or a business close to Maywood Academy High School. Call (323) 997-8867 any time, since we are available 24/7.

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Other Maywood locksmith services

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

Master Key System in Maywood — FAQs

What is a master key system?
It is a set of locks arranged so each lock has its own key, while higher-level keys open several or all of them. A landlord can open every unit, while each tenant opens only their own.
Can my older Maywood bungalow locks be part of a master key system?
Sometimes. Worn original mortise locks and mismatched add-on deadbolts may not accept a proper master pinning. We inspect each lock and tell you what can be reused and what should be replaced. Call (323) 997-8867 to schedule a visit.
I own a bungalow divided into several units. What would you recommend?
Typically separate change keys for each unit, plus one landlord or manager key. We also design it so a single unit can be rekeyed after a tenant moves out without affecting the others.
What is a restricted keyway and do I need one?
A restricted keyway uses a key blank that is not freely sold, so duplicates are harder to make without authorization. It is useful for properties with high turnover, staff changes, or contractors. It is optional, and we can explain the tradeoffs.
Can gate padlocks and security-bar locks be included?
In many cases yes. Where the padlock or gate hardware allows, we can key it to the system so you are not carrying a separate set of keys for the gate.
What happens when a tenant loses a key?
Because each unit has its own cylinder, we can rekey just that lock rather than redoing the whole building. Call (323) 997-8867 and we will plan the work.
Do you have a shop I can visit?
No. We are fully mobile and come to your property in Maywood, which also lets us see the real doors and hardware before designing the system.
Are you available for after-hours service?
Yes, we are available 24/7. Planning a master key system is usually scheduled ahead, but if a lock problem arises on a system property, you can reach us any time.
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