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Crenshaw Lock

High Security Locks in Simi Valley · 24/7 mobile

High Security Locks in Simi Valley, California

Crenshaw Lock Company installs pick-, bump- and drill-resistant high security locks and restricted keys across Simi Valley, 24/7. We are fully mobile and come to your home or business. Call (323) 997-8867 to talk through your door, your risks and the right hardware.

  • Mobile to your Simi Valley 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 standard builder-grade deadbolt is designed to keep honest people honest. High security locks are built for a different problem: someone who actually tries to defeat the lock by picking, bumping, drilling or forcing it. They use tighter tolerances, hardened inserts, more complex pin or sidebar systems, and restricted keyways, so keys cannot be casually copied at a hardware store kiosk.

Simi Valley is mostly single-family tract homes and planned communities, and a surprising number still run the original or worn residential hardware that went in decades ago. That is fine for many households, but if you have had a break-in scare, a bad tenant situation, a home office, valuables, or just want better control over who holds a working key, upgrading the cylinders and strike hardware is one of the most practical improvements you can make.

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 job begins with a conversation about your door and what you want the lock to protect, then we bring the hardware to you.

How it works in Simi Valley

  1. 1

    Talk through the threat and the door

    Call (323) 997-8867 and tell us what you are protecting and why. We ask about the door material, the frame, the existing hardware and who currently has keys, because a strong cylinder on a weak door only moves the weak point.

  2. 2

    Assess the whole entry point

    On site we look at the cylinder, deadbolt body, strike plate, screws, and the door and frame around them. Many tract-home doors need longer strike screws or a reinforced strike to benefit from a better lock.

  3. 3

    Choose the right level of protection

    We explain options such as pick- and bump-resistant cylinders, drill-resistant hardened inserts and restricted keyways with controlled key duplication. We match the choice to your use, whether a family home, a rental, or a small shop.

  4. 4

    Install and fit the hardware

    We install the new locks cleanly, align the bolt so it throws smoothly, and reinforce the strike and frame where needed. For gated or HOA communities we work to keep finishes and approved styles consistent.

  5. 5

    Cut and test keys, then hand over

    We test every key and the lock operation several times, explain how key control works, and tell you how to order additional keys. Old keys stop working once the cylinders are replaced.

Need high security locks in Simi Valley?

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

Call (323) 997-8867

What affects the price

  • The lock system chosen: restricted-keyway cylinders with controlled duplication cost differently than basic upgraded cylinders.
  • The number of doors and cylinders, and whether you want them all keyed alike on one key.
  • Door and frame condition, including whether the strike, reinforcement plates or the door edge need work.
  • Commercial needs such as storefront locks, mortise cylinders or panic hardware, which differ from residential deadbolts.
  • Finish or style requirements, such as matching HOA-standardized hardware or existing trim.
  • Whether the visit is scheduled or an after-hours emergency call.

Why Simi Valley chooses us

  • Fully mobile and available 24/7, so the work happens at your door instead of at a counter.
  • Serving the region since 1987, with the owner, David Shar, leading the work.
  • We look at the door and frame, not only the cylinder, so the upgrade does not stop at the weakest link.
  • We explain honestly when a standard quality lock is enough and when high security is justified.
  • Experience with both older residential hardware and modern smart or HOA-standardized locks.
  • Clear key-control guidance so you know who can and cannot copy your keys.

High Security Locks across Simi Valley

Simi Valley's housing stock shapes what we recommend. In the Texas Tract and across many 1970s ranch-style neighborhoods, we often find original or worn Kwikset and Schlage deadbolts. Replacing them with a pick- and bump-resistant cylinder, plus a reinforced strike, is a common and worthwhile upgrade, especially after a tenant move-out or a lost key.

In Wood Ranch and Big Sky, newer 1990s-2000s gated and semi-gated developments often have HOA-standardized hardware and increasingly smart locks. There we pay attention to finish, approved styles and compatibility, so a security upgrade does not clash with community rules. Older cabin-style homes in Santa Susana Knolls, on winding lanes, sometimes have unusual doors and frames that need careful fitting, and homes in the Bridle Path area may have longer driveways and outbuildings worth securing too.

We work throughout 93063, 93065, 93062, 93064 and 93094, from homes near Rancho Simi Community Park and Corriganville Park to businesses along Cochran St and First St and around the Simi Valley Town Center. Whether you are off SR-118, Madera Rd or Tapo Canyon Rd, call (323) 997-8867 and we will come to you.

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 Simi Valley locksmith services

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

High Security Locks in Simi Valley — FAQs

What makes a lock high security?
High security locks resist common attacks such as picking, bumping, drilling and forced entry, using tighter tolerances, hardened parts and often restricted keyways. Call (323) 997-8867 and we can explain which features suit your door.
Are high security locks worth it for a regular Simi Valley home?
It depends on your situation. For many households a quality Grade 1 or 2 deadbolt is enough. If you have had a break-in, rent out a property or store valuables, a high security cylinder is a sensible step up.
Can you upgrade the old Kwikset or Schlage deadbolts in my 1970s home?
Yes. We commonly replace worn original hardware with better cylinders and reinforce the strike plate. Call (323) 997-8867 to discuss your doors.
What is a restricted key?
A restricted key uses a keyway and blank that are not freely sold, so copies are made only through authorized channels. That gives you much better control over who can duplicate your key.
Will a better lock help if my door or frame is weak?
Only partly. A strong lock on a weak frame can still fail to forced entry, so we inspect the door, frame and strike and recommend reinforcement where it matters.
Can you work with my HOA's required hardware in Wood Ranch or Big Sky?
We can work with HOA-standardized hardware and finishes where possible, and we will tell you plainly if a requested upgrade conflicts with community rules, so check your HOA guidelines first.
Do you handle commercial high security locks?
Yes. We work on storefront locks, mortise cylinders and panic hardware for retail units and business parks around Simi Valley. Call (323) 997-8867 to discuss your building.
Do I need to visit a shop?
No. We are fully mobile with no storefront and available 24/7, so we come to your home or business.
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