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Crenshaw Lock

Master Key System in Temple City · 24/7 mobile

Master Key System in Temple City, California

Crenshaw Lock Company designs and installs master key and restricted-key systems with key control for Temple City properties. We are fully mobile and available 24/7 across the city, including Las Tunas Drive. Call (323) 997-8867 to plan a system around your doors and your people.

  • Mobile to your Temple City 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 keeps its own individual key. Done well, it means a property manager carries one key for a whole townhome complex, a restaurant owner gives a manager access the line cooks do not have, and a landlord never wonders who still holds a copy. Done badly, it creates overlapping keys, weak spots in security and a mess to untangle later.

Temple City is a good example of why the design matters. This is a quiet, residential city of 1950s and 1960s ranch and stucco homes, but it is changing. Teardown-rebuilds are replacing older houses, and new townhomes and small apartment buildings are going up. Along Las Tunas Drive, a walkable corridor of mixed-age storefronts, shop and restaurant owners need keys that work for staff without handing out full access. Each of these situations calls for a different system.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, led by owner and lead tech David Shar. We are mobile only, with no storefront to visit. We come to your property, look at the doors and hardware you actually have, and build a key plan that matches how your building is used. Restricted keyways and key control, which limit who can legally get copies cut, can be added when you want to keep your system from being duplicated casually.

How it works in Temple City

  1. 1

    Talk through who needs access to what

    We start with a conversation, not a parts list. Who are the occupants, managers, staff, vendors and emergency contacts? Which doors does each group need to open? For a small townhome development this might be individual units, shared laundry and a mechanical room. For a Las Tunas Drive shop it might be the front door, back door, storage and an office.

  2. 2

    Walk the property and inventory the hardware

    We come to your location and check each door, lock and cylinder. Some existing hardware can be rekeyed into the system. Other locks may be worn, mismatched or unsuited to master keying and are better replaced. New construction and teardown-rebuild homes often have fresh hardware that we can key as it goes in.

  3. 3

    Design the key hierarchy

    We lay out the structure: individual keys for each door, master keys for groups of doors, and a grand master if the property needs one. We keep the system as simple as the building allows, because every added level adds complexity and some trade-off in security.

  4. 4

    Choose keyways and key control

    If you want protection against unauthorized duplication, we discuss restricted keyways and key control options that limit copying to authorized people. This is especially useful for multi-unit properties and businesses where keys change hands often.

  5. 5

    Install and pin the cylinders

    We install or rekey the cylinders to match the design, then test every key against every door it should and should not open. Testing at this stage catches cross-keying problems before you are depending on the system.

  6. 6

    Deliver keys and document the system

    We hand over the keys, label the system and help you set up a simple record of who holds what. That record makes later changes, like a tenant turnover or a lost master key, much easier to handle.

Need master key system in Temple City?

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What affects the price

  • The number of doors and cylinders that need to be included in the system.
  • How many levels the key hierarchy has, such as individual, master and grand master.
  • Whether existing locks can be rekeyed or hardware must be replaced to support master keying.
  • Whether you want a restricted keyway and key control to limit unauthorized copying.
  • How many keys of each type you need cut at handover, and whether more will be needed later.
  • Door and hardware type, including commercial storefront, residential and specialty doors, and the time of day service is needed.

Why Temple City chooses us

  • We are fully mobile and available 24/7, so we can work around a shop's business hours or a property manager's turnover schedule.
  • Business operating since 1987, with owner and lead tech David Shar overseeing the work.
  • We design the system around how your building is actually used instead of selling a standard package.
  • We test every key against every door before we leave, so cross-keying surprises show up on our watch.
  • We cover both ends of Temple City's mix: new townhome and multi-unit construction, and older ranch homes and storefronts.
  • We explain the trade-offs of each added key level honestly, including when a simpler system is the better choice.

Master Key System across Temple City

Temple City's building mix is unusually varied for a small city. In the Camellia area and Mission View Acres, you will find the classic single-story ranch and stucco homes that define much of the valley floor, and many are being torn down and rebuilt. A new single-family build or a small townhome project is a natural time to set up a master key plan, since the locksets are fresh and the system can be designed from the start rather than patched in later.

Downtown Las Tunas Drive is a different story. The Las Tunas Drive business district is a walkable strip of mixed-age storefronts, shops and restaurants. Owners there often need a system where a manager can reach storage and the office while staff only have the front and back doors. Older storefront hardware may need to be evaluated before it can join a master-keyed setup, and we can do that on site anywhere in ZIP code 91780.

We reach Temple City via Rosemead Blvd (SR-19), Baldwin Ave, Lower Azusa Rd and Temple City Blvd, and we serve properties near Temple City Park and Live Oak Park as well. For property managers handling turnover in the city's growing stock of townhomes and small apartment buildings, a master key system with documented key control makes tenant changes simpler and keeps your keys accounted for. Call (323) 997-8867 to schedule.

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Other Temple City locksmith services

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

Master Key System in Temple City — FAQs

What is a master key system?
It is a lock setup where each door has its own key, and a higher-level master key opens a defined group of doors. It lets managers or owners carry one key while occupants only access their own space.
Can my existing locks be part of a master key system in Temple City?
Often yes, if the cylinders are in good condition and compatible. We inspect them on site. Worn or mismatched hardware may need replacement. Call (323) 997-8867 and we can talk through what you have.
Is a master key system a good fit for a small townhome development?
It can be. A simple system lets a property manager access all units and common areas with one key while each tenant has only their own. We design it to match how your property is run.
What is a restricted key system?
A restricted system uses special keyways and key control so that copies can only be made by authorized people. This helps prevent casual duplication at hardware stores or kiosks.
Does a master key system reduce security?
Master keying adds some complexity, and more levels mean more places for something to go wrong. A well-designed system with sensible key control keeps that risk manageable, and we are upfront about the trade-offs.
Can you set this up for a Las Tunas Drive shop or restaurant?
Yes. We commonly think through setups where a manager has broader access than staff. We come to your location, so you do not need to leave your business. Call (323) 997-8867 to discuss.
What if a master key is lost?
Tell us as soon as possible. Depending on the system, we may be able to rekey the affected doors or redesign part of the hierarchy. Good records of who holds which key make this much faster.
Do you have a shop I can visit?
No. Crenshaw Lock Company is fully mobile and available 24/7. We come to you anywhere in Temple City.
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