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Crenshaw Lock

High Security Locks in Downey · 24/7 mobile

High Security Locks in Downey, California

Crenshaw Lock Company installs pick-, bump- and drill-resistant high security locks and restricted keys throughout Downey, California. We are a fully mobile locksmith, available 24/7, and we come to your home, shop or office. Call (323) 997-8867 to talk through the right upgrade.

  • Mobile to your Downey location
  • Available 24/7
  • Price quoted before we start
Call (323) 997-8867or tap to call — we answer 24/7
High-security lock cylinder with a dimple key
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A high security lock is built to resist the methods that defeat ordinary hardware: picking, bumping, drilling, and forced removal. In a city like Downey, where so many homes started life with the original builder-grade knob lock and a basic deadbolt, the difference between standard hardware and a properly installed high-security cylinder is real. It shows up in the hardened steel inside the lock, in tighter manufacturing tolerances, and in key systems that can't be copied at the corner hardware counter.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and owner and lead technician David Shar has spent decades watching what actually fails on real doors. Often the lock itself is not the weak point. A strong cylinder in a thin strike plate, a short screw, or a worn door frame can undo the whole investment. So we look at the entire entry, not just the part you asked about.

We are mobile only. There is no storefront to drive to. We bring the hardware, the key-cutting capability and the tools to your door in Downey, whether that is a ranch home off Lakewood Blvd, a larger property in North Downey, or a retail suite near Downey Landing. Our phone line is answered around the clock at (323) 997-8867.

How it works in Downey

  1. 1

    Talk through what you are protecting

    We start with a call or a quick conversation at the door. Is this the front entry of a family home, a side gate, a back office, or a stockroom? Who currently has keys? Have you had a break-in, a tenant change, or a lost key? The answers shape which lock and key system makes sense.

  2. 2

    Inspect the door, frame and strike

    Before recommending anything, we look at the door's thickness, the condition of the frame, the strike plate and the screws holding it. Older mid-century doors and 1920s-era entries sometimes have worn or split wood that needs reinforcing so the new lock has something solid to bite into.

  3. 3

    Choose the cylinder and key control level

    We explain the options: hardened, drill-resistant cylinders with anti-pick and anti-bump features, and restricted keyways where duplicates can only be made with authorization. We tell you plainly where the extra protection matters and where standard Grade-1 hardware is plenty.

  4. 4

    Install and fit the hardware

    We install the deadbolt or cylinder, upgrade the strike plate and use longer screws that reach the framing where appropriate. The bolt should throw smoothly and fully, with no binding. If you want the other doors on the property to match, we rekey them to the same key.

  5. 5

    Test, hand over keys and explain care

    We test every lock with the door open and closed, hand over your keys, and explain how to request additional copies under a restricted system. We also tell you what to watch for as hardware wears so small problems get fixed before they become lockouts.

Need high security locks in Downey?

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What affects the price

  • The lock grade and the key system: standard Grade-1 hardware, a drill-resistant cylinder, and a restricted-keyway system sit at different cost levels.
  • How many doors or cylinders are involved, and whether you want them all keyed alike or set up under a master-key structure.
  • The condition of the door and frame, since reinforcing a worn strike area or repairing a split jamb adds labor and materials.
  • Whether the job includes electronic components, such as a smart lock or keypad paired with a high security deadbolt.
  • The number of restricted keys you need cut at installation, and any extra authorization cards or key registrations involved.
  • Timing and location: after-hours or urgent calls are handled differently from scheduled installs, and we quote the job before work begins.

Why Downey chooses us

  • Fully mobile and available 24/7, so a break-in at midnight or a management change on a Monday morning both get a response without a shop visit.
  • In business since 1987, with David Shar leading the work, so the person advising you has seen how these locks hold up over decades.
  • We assess the whole entry, including frame, strike plate and screws, rather than selling you a premium cylinder and leaving the weak points alone.
  • We tell you honestly when high security hardware is overkill and when a quality Grade-1 deadbolt is the better value.
  • We can rekey existing doors to match your new high security lock, so you carry one key instead of a ring of mismatched ones.
  • We handle homes and commercial properties alike, from single-door upgrades to rekeying and master-key planning for retail spaces.

High Security Locks across Downey

Downey has a distinctive housing mix, and it shapes what people ask us for. Much of the city is built from mid-century ranch homes dating from the 1940s through the 1960s, including well-kept Googie-era tracts. Many of those homes still have an original knob lock or a light deadbolt on the front door. Upgrading to a drill- and pick-resistant deadbolt is one of the most worthwhile changes an owner can make, and it is especially common when a new buyer takes possession and wants every lock rekeyed after closing.

In North Downey, ZIP code 90240, the lots are larger and some homes are custom or semi-gated. Owners there often want a smart lock or keypad on the front entry paired with a Grade-1 high security deadbolt, with the remaining doors rekeyed to match. Near Downtown Downey, 1920s homes can have older doors and frames that need a closer look before new hardware goes in. In Orange Estates and across ZIP codes 90241 and 90242, we see the same pattern of original hardware ready for an upgrade.

Commercial work is part of Downey too. Around Stonewood Center and the Downey Landing redevelopment on the former aerospace site, retailers sometimes need a commercial rekey or a master-key setup after a management change, so former staff no longer hold working keys. Whether you are off Firestone Blvd, Lakewood Blvd, Florence Ave or Imperial Hwy, we come to you. Call (323) 997-8867 any hour.

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Other Downey locksmith services

See all of our Downey services, or our citywide high security locks page.

High Security Locks in Downey — FAQs

What makes a lock "high security"?
A high security lock uses hardened components and tighter tolerances to resist picking, bumping and drilling, and often a restricted key that cannot be duplicated freely. Call (323) 997-8867 and we can explain the options for your door.
Is a high security lock worth it for an older ranch home in Downey?
Often yes, especially if the front door still has its original knob lock or a basic deadbolt. We also check the frame and strike plate, because a strong lock is only as good as what it is mounted into.
Can you make all my locks work with one key?
Yes. We can rekey the other doors to match a new high security lock, or set up a keyed-alike arrangement. For businesses, we can plan a master-key structure so different staff access different areas.
Can I pair a smart lock with a high security deadbolt?
Yes. Many North Downey homeowners choose a smart lock or keypad on the entry along with a Grade-1 high security deadbolt, with a mechanical key backup. We can install both and rekey the remaining doors.
Do you offer restricted keys that can't be copied at a hardware store?
Yes. Restricted keyway systems limit duplication to authorized requests. We explain how copies are ordered before you commit, so you know how future keys will work. Call (323) 997-8867 for details.
Do I need to come to a shop?
No. We are fully mobile with no storefront. We come to your home, shop or office in Downey and complete the work on site.
Can you help after a management change at my retail space?
Yes. We handle commercial rekeys and master-key setups so old keys stop working. This is common for businesses around Stonewood Center and Downey Landing.
Are you available at night or on weekends?
Yes, we operate 24/7. If you have had a break-in or need your locks secured urgently, call (323) 997-8867 at any hour.
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