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Crenshaw Lock

High Security Locks in Granada Hills · 24/7 mobile

High Security Locks in Granada Hills, California

Crenshaw Lock Company installs pick-, bump- and drill-resistant high security locks and keys across Granada Hills, California. We are a fully mobile locksmith available 24/7, and we come to your door. Call (323) 997-8867 to talk through your home, gate or business and choose the right hardware.

  • Mobile to your Granada Hills 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. A high security lock is built for a different problem: resisting the common methods of defeating a lock quietly, such as picking, bumping and drilling, and in many systems controlling who can copy your keys. In Granada Hills, where so many homes were built in the 1950s and 1960s with the hardware of that era, upgrading the lock on the front door is often the single most useful security change a homeowner can make.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and owner and lead technician David Shar brings that experience to every job. We are fully mobile, so there is no shop to visit. We bring the hardware, assess your doors and frames at your property, and install on the spot wherever that is practical.

This page explains how a high security installation works here, what affects the cost, and what to consider for the different kinds of property in the area: tract ranch homes, Eichler homes where appearance matters, foothill properties with gates, and local businesses.

How it works in Granada Hills

  1. 1

    Talk through your goals

    Call (323) 997-8867 and tell us what you want to protect and what worries you. Some people want pick and bump resistance, others want keys that cannot be casually duplicated, and others want both. We help you sort out which matters most before anything is installed.

  2. 2

    Look at the door, frame and strike

    A strong cylinder in a weak door is a poor investment. On site we check the door material, the frame, the strike plate and the screws holding them in. On older ranch homes the frame and strike are often the weak link, so we tell you honestly if reinforcement should come with the new lock.

  3. 3

    Choose the cylinder and keyway system

    We go over high security cylinder options, including how the keys are controlled and whether you want the whole property on one key. If you have several exterior doors, we can plan for them to be keyed alike so you carry a single key.

  4. 4

    Install and fit to the hardware

    We install the new cylinders or deadbolts, making sure the bolt throws smoothly and the door closes without binding. Where a home has distinctive original or mid-century hardware, we look at ways to keep the look while upgrading the cylinder inside it.

  5. 5

    Test, cut keys and hand over

    We operate each lock repeatedly from both sides, check the door under normal use, and hand over your keys along with guidance on how key copies are handled for your system, so you know how to add or limit keys later.

Need high security locks in Granada Hills?

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

Call (323) 997-8867

What affects the price

  • The type of high security cylinder or deadbolt you choose, since systems differ in their resistance features and key control.
  • How many doors or gates need to be done, and whether they will be keyed alike.
  • The condition of the door, frame and strike plate, and whether reinforcement is recommended alongside the lock.
  • Whether existing hardware, such as original mid-century or mortise sets, must be preserved or adapted rather than replaced.
  • The number of keys you need and any restricted-key or copy-control features.
  • The time of day and location of the visit, since we operate 24/7 and come to you.

Why Granada Hills chooses us

  • Fully mobile service: we come to your door in Granada Hills, so the work is assessed against your actual door, not a counter display.
  • Operating since 1987, with owner David Shar personally involved in the work and standards.
  • Honest assessments: if your frame or strike is the weak point, we say so rather than just selling a pricier cylinder.
  • Sensitivity to older and design-conscious homes, including finding ways to upgrade security while respecting original hardware.
  • Experience across homes, gates and businesses, so one call can cover the front door, the side gate and the garage entry.
  • Available 24/7, including when a break-in or lost key makes an upgrade urgent.

High Security Locks across Granada Hills

Granada Hills is a Northern Valley community with a lot of variety in what needs locking. Across much of the area, in ZIP codes like 91344 and 91394, you find 1950s and 1960s ranch tract homes along streets feeding off Balboa Blvd, Zelzah Ave and Devonshire St. Many still have their original lockset, worn after decades of use. A new owner in Old Granada Hills near Chatsworth St might start by replacing a tired front-door lock with a high security cylinder and keying every exterior door alike.

Balboa Highlands is a different case. This gated tract of Joseph Eichler mid-century modern homes has entry hardware that owners often want to preserve. Instead of a bulky modern deadbolt that spoils the look, we talk through period-appropriate options and ways to upgrade the cylinder while keeping the character of the entry. Knollwood, near the country club, has its own mix of homes where quiet, solid security matters.

On the north edge, foothill and equestrian properties near O'Melveny Park, Bee Canyon and Bull Creek have long driveways and gates. Heat and Santa Ana dust can make gate locks and exterior hardware stick, so we can service those at the same visit. Whether you are off the 118, near the 405 or closer to Sepulveda Blvd, we 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 Granada Hills locksmith services

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

High Security Locks in Granada Hills — FAQs

What makes a lock high security?
High security locks are designed to resist common attacks such as picking, bumping and drilling, and many also control key duplication. Call (323) 997-8867 and we can explain the options for your doors.
Can you upgrade the locks on my Eichler home in Balboa Highlands without ruining the look?
Often yes. We look at the existing entry hardware and discuss ways to improve the cylinder security while keeping the mid-century appearance. We would assess your specific hardware first.
Can all my exterior doors use one key?
Yes, we can set up exterior locks keyed alike so one key works throughout. This is popular with new owners of ranch homes in Old Granada Hills.
Will a high security lock help if my door frame is weak?
Only partly. A strong lock needs a sound door, frame and strike plate. We check these during the visit and tell you honestly if reinforcement is worthwhile.
Do you service driveway and hillside gate locks?
We can work on gate locks, including foothill properties where heat and dust cause sticking. Call (323) 997-8867 to describe your gate and we will advise.
Do I need to come to a shop?
No. We are fully mobile and there is no storefront. We come to your home or business in Granada Hills.
Can you do this at night or on a weekend?
We are available 24/7. If you need an urgent upgrade after a break-in or lost keys, call (323) 997-8867.
How is the price determined?
It depends on the cylinder system, number of doors, door and frame condition, key needs and any hardware preservation. We explain these factors during your call and on site.
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