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Crenshaw Lock

High Security Locks in Sierra Madre · 24/7 mobile

High Security Locks in Sierra Madre, California

Crenshaw Lock Company installs pick-, bump- and drill-resistant high security locks and keys in Sierra Madre, California. We are a fully mobile locksmith available 24/7, and we come to your home or shop. Call (323) 997-8867 to talk through your doors and options.

  • Mobile to your Sierra Madre 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 not simply a more expensive deadbolt. It is a cylinder engineered to resist the ways locks are actually defeated: picking, bumping, drilling, and forced manipulation. It is paired with a key system that is harder to copy without authorization. For many Sierra Madre properties, this upgrade is worth considering, especially where a lock has been in place for decades and nobody knows how many keys exist.

Sierra Madre is a small, walkable foothill town, and its building stock reflects that. Early-1900s Craftsman cottages, Victorians and bungalows sit around the village core, and the older cabins and hillside homes of Sierra Madre Canyon often have original doors that were never built for modern hardware. Adding a high security cylinder to a door like that takes judgment, not just a box off the shelf. We look at the door, the frame, the strike, and how the household actually uses the entry before recommending anything.

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 on the phone and ends with the work done at your door. If a high security lock is more than you need, we will say so and suggest something sensible instead.

How it works in Sierra Madre

  1. 1

    Talk through the problem

    Call (323) 997-8867 and tell us what you are protecting and why: a tenant turnover, a break-in nearby, a shop with valuable stock, or simply an old lock you no longer trust. We ask about the door type and what is on it now so we arrive with suitable options.

  2. 2

    Inspect the door and frame

    On site, we examine the door's thickness, the condition of the frame, the strike plate, and the existing hardware. A strong cylinder in a weak door only moves the weak point, so we note anything that should be reinforced alongside the lock.

  3. 3

    Choose the right cylinder and key control

    We explain the difference between standard, pick-resistant, and drill-resistant cylinders, and how restricted keyways limit unauthorized key duplication. You choose the level of protection that fits the door and your budget.

  4. 4

    Install and fit carefully

    We install the new hardware and adjust the latch, bolt throw, and strike so it operates smoothly. On older doors, including those in Sierra Madre Canyon, we work to avoid unnecessary damage to original wood and finish.

  5. 5

    Test and hand over keys

    We test the lock repeatedly from both sides, confirm the keys work, and walk you through how to order additional keys if your system is restricted. Then we leave you with clear notes on what was installed.

Need high security locks in Sierra Madre?

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

Call (323) 997-8867

What affects the price

  • The grade and type of cylinder chosen, since pick-, bump- and drill-resistant models differ in construction and protection.
  • Whether the key system is restricted, which affects how additional keys are made and who can authorize them.
  • The number of doors being upgraded, including side, back, and garage entries.
  • The condition and type of the door, such as an old mortise door that needs modification versus a modern prepared door.
  • Any reinforcement needed, like a stronger strike plate or frame repair, to make the lock effective.
  • Whether the work is needed after hours, on a holiday, or at a location that requires extra carrying of tools.

Why Sierra Madre chooses us

  • We are fully mobile, so we assess the actual door in front of us instead of guessing from a description.
  • Serving the region since 1987 means we have handled many older doors and hardware types, including mortise locks.
  • We recommend only what the door and situation call for, and will tell you if a lower-cost option is adequate.
  • We work with narrow, hard-to-reach properties, carrying tools by hand when a van cannot get close.
  • David Shar leads the company, so our standards come from a working technician rather than a call center.
  • We are available 24/7, so urgent security upgrades after an incident do not have to wait.

High Security Locks across Sierra Madre

Sierra Madre has a character all its own, and the locks we see here reflect it. Around Downtown Sierra Madre and Kersting Court, small-shop storefronts and nearby Craftsman cottages sit within a compact, walkable grid. A cafe or boutique there may want a drill-resistant cylinder on the back door and a restricted key system for staff, while a cottage owner near the wisteria vine may want all exterior doors rekeyed and upgraded after a tenant turnover.

Sierra Madre Canyon is a different challenge. Its narrow, steep lanes hold old cabins and hillside homes, many with original skeleton-key mortise locks and non-standard doors. When the van has to park below, we carry tools up on foot and work out whether a careful retrofit or a replacement suits the door best. We aim to improve security without ruining a century-old entry.

We serve addresses across ZIP codes 91024 and 91025, reaching customers off Sierra Madre Blvd, Baldwin Ave, Michillinda Ave, and Sierra Madre Villa Ave, with the I-210 Foothill Freeway nearby. Whether you live close to Bailey Canyon Wilderness Park, near the Mount Wilson Trail, or in the village core near Mary's Market, call (323) 997-8867 any hour.

Locked out or need a locksmith now?

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

Call (323) 997-8867

Other Sierra Madre locksmith services

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

High Security Locks in Sierra Madre — FAQs

What makes a lock high security?
High security cylinders are built to resist picking, bumping, and drilling, and often use restricted keys that are harder to duplicate. Call (323) 997-8867 to discuss which type fits your door.
Can you upgrade the old skeleton-key mortise locks in Sierra Madre Canyon?
Often yes. Depending on the mortise body and door, we may rekey or carefully retrofit it, or add a separate high security deadbolt while preserving the original look. We assess the door first.
Will a high security lock work on my Craftsman cottage door?
In most cases, yes. We check door thickness, bore size, and frame strength. Some older doors need small modifications, which we explain before starting.
Do you offer high security locks for shops around Kersting Court?
Yes. Business owners often want drill-resistant cylinders and restricted keys for staff control. We can also help with lockouts and rekeying. Call (323) 997-8867 to discuss your shop.
How do restricted keys work?
A restricted key uses a keyway and blank that are controlled, so copies generally require authorization rather than a quick duplicate at any hardware counter. We explain the process for ordering extra keys.
Is a high security lock enough on its own?
Not always. The door, frame, and strike plate matter as much as the cylinder. We point out weak spots and can reinforce them during the same visit.
Do you have a shop I can visit?
No. We are mobile only and come to you, which lets us inspect the actual door and complete the work on site.
Are you available at night or on weekends?
Yes, we are available 24/7. For urgent security needs after an incident, 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