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Crenshaw Lock

High Security Locks in Montebello · 24/7 mobile

High Security Locks in Montebello, California

Crenshaw Lock Company installs pick-, bump- and drill-resistant high security locks and restricted keys in Montebello, California. We are fully mobile and available 24/7, so we come to your home, suite or storefront. Call (323) 997-8867 to talk through your door and your options.

  • Mobile to your Montebello location
  • Available 24/7
  • Price quoted before we start
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High-security lock cylinder with a dimple key
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A high security lock is not just a stronger-looking deadbolt. The real difference is inside the cylinder: tighter tolerances, hardened inserts that resist drilling, pin designs that frustrate picking and bumping, and keys that cannot be copied at a hardware store kiosk without authorization. In Montebello, where homes range from 1920s Spanish Revival and Craftsman houses to post-war stucco tracts and newer hillside builds, the right upgrade depends a lot on the door and hardware you already have.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and owner and lead technician David Shar built the business around coming to the customer. We are mobile only. There is no storefront to visit, so every assessment, installation and key cut happens on site, at your door, whether that is a front entry off Montebello Blvd or a tenant suite along Washington Blvd.

This page explains how a high security installation works, what affects the cost, and what to consider for the kinds of properties common in Montebello. We do not quote prices without seeing the job, but we will be straightforward about what is worth upgrading and what is not.

How it works in Montebello

  1. 1

    Talk through the problem and the door

    Call (323) 997-8867 and tell us what prompted the upgrade: a break-in nearby, a tenant turnover, lost keys, or simply wanting better protection. We ask about the door type, the current hardware and whether the property is a house, a suite or a storefront.

  2. 2

    On-site assessment

    We come to you and look at the door, frame, strike plate and existing lock. A door with a strong cylinder but a weak frame or short strike screws is still easy to defeat, so we check the whole assembly, not just the lock.

  3. 3

    Choose the right cylinder and key system

    We explain options such as pick-resistant and bump-resistant cylinders, drill-resistant hardened inserts, and restricted keyways where duplicates require authorization. For businesses we can discuss keying multiple doors alike or under a master system.

  4. 4

    Installation and reinforcement

    We install the new hardware and, where it makes sense, reinforce the strike plate and frame. On older doors, including some 1920s-era homes, we fit the work carefully to the existing bore and mortise rather than forcing a modern part into the wrong opening.

  5. 5

    Test, key handoff and walkthrough

    We test the lock from both sides with the door open and closed, confirm smooth operation, hand over your keys and explain how key duplication works for your system so you know how to add keys later.

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What affects the price

  • The brand and security grade of the cylinder, since restricted-keyway and hardened systems vary widely in cost.
  • How many doors or cylinders are being upgraded, and whether they should be keyed alike.
  • Condition of the door and frame, including whether the strike plate, jamb or latch needs reinforcement.
  • Older or non-standard hardware, such as mortise locks on 1920s-era homes, which can require more careful fitting.
  • Commercial needs such as storefront aluminum doors, tenant suite requirements or master key planning.
  • Time of day and urgency, since we operate 24/7 and after-hours calls involve different scheduling than planned daytime work.

Why Montebello chooses us

  • Fully mobile service: we bring tools, cylinders and key-cutting capability to your door instead of asking you to come to a shop.
  • Serving the region since 1987, with owner and lead technician David Shar involved in the work.
  • We assess the whole door, frame and strike, not just the cylinder, so the upgrade actually improves security.
  • Experience across both older mortise-style hardware and modern residential and commercial cylinders.
  • We tell you plainly when a high security cylinder is worth it and when a simpler fix would do.
  • Available 24/7, including for lockouts and failed locks that cannot wait for business hours.

High Security Locks across Montebello

Montebello is a city of contrasts when it comes to doors. Around the older core and parts of North Montebello you find 1920s to 1950s single-family homes, Spanish Revival and Craftsman styles with original wood doors and sometimes older mortise hardware. Upgrading those entries to a high security cylinder takes some care to preserve the door while improving the lock. In ZIP code 90640, the broad flats are filled with post-war stucco houses, where standard residential cylinders are common and a pick- and bump-resistant upgrade is often a straightforward improvement.

Up in Montebello Hills, newer hillside homes sit on the former Montebello Oil Field slopes. Many have gated driveways and larger entry doors, so a visit can involve both the front door and the gate hardware. We can look at both in one trip. In adjacent Montebello Gardens, an unincorporated area, the same mobile service applies.

On the commercial side, The Shops at Montebello and the storefronts along Washington Blvd mean aluminum doors, tenant suites and offices that need locks hard to pick or drill and keys that are controlled. We reach customers from I-5, I-710, Beverly Blvd and Montebello Blvd, near spots like Grant Rea Park, the Juan Matias Sanchez Adobe and Quiet Cannon. Call (323) 997-8867 any hour.

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Other Montebello locksmith services

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

High Security Locks in Montebello — FAQs

What makes a lock high security?
High security locks resist common attacks: picking, bumping and drilling. They use tighter tolerances, hardened components and often restricted keys that cannot be freely copied. We explain the specific features of each option before you decide.
Will a high security lock work on my older Montebello home?
Often yes. Many 1920s to 1950s homes have standard bores that accept modern cylinders, while some have older mortise hardware that needs careful fitting. We look at the door on site and recommend what fits. Call (323) 997-8867 to describe your door.
Do you have a shop I can visit?
No. Crenshaw Lock Company is fully mobile only. We come to your home, suite or storefront in Montebello and do the assessment, installation and key work on site.
Can you upgrade locks at The Shops at Montebello or on Washington Blvd?
We service commercial doors including tenant suites and aluminum storefronts. Property management or landlord rules may apply, so confirm permissions first. Call (323) 997-8867 to discuss the door and keying needs.
How are high security keys different?
Many systems use restricted keyways and keys that can only be duplicated with proper authorization, which limits unauthorized copies. We explain how to order additional keys for your particular system.
Can you do the gate and the front door in one visit?
For hillside homes with gated driveways, such as in Montebello Hills, we can look at both the gate hardware and the entry in the same trip. Describe the setup when you call (323) 997-8867.
How much does a high security lock installation cost?
It depends on the cylinder grade, number of doors, door and frame condition, and whether reinforcement is needed. We do not quote without understanding the job, but we will explain the factors clearly.
Are you available at night or on weekends?
Yes, we are available 24/7 and fully mobile. For urgent lockouts or failed locks, call us 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