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Crenshaw Lock

High Security Locks in Pomona · 24/7 mobile

High Security Locks in Pomona, California

Crenshaw Lock Company installs pick-, bump- and drill-resistant high security locks and restricted keys in Pomona, California. We are a 24/7, fully mobile locksmith and come to your home, rental, or business. Call (323) 997-8867 to talk through your door and your security goals.

  • Mobile to your Pomona 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 pin-tumbler deadbolt keeps honest people honest, but it can be picked, bumped, or drilled by someone who knows how. High security locks are built differently. They use tighter tolerances, hardened inserts that resist drilling, anti-pick pin designs, and keys that cannot be duplicated at a hardware-store kiosk. In a city as varied as Pomona, the right choice depends heavily on the building and who needs a key.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and owner and lead technician David Shar has spent decades working on everything from original brass hardware to modern commercial cylinders. We are mobile only. There is no storefront to visit, so we bring the hardware, tools, and key-cutting capability to your door at any hour, day or night.

Pomona's housing stock makes this work interesting. A Craftsman in the Lincoln Park Historic District may have a mortise lock worth preserving, while a stucco home in Phillips Ranch has a standard residential cylinder that can be upgraded cleanly. We look at the door, the frame, the strike, and your actual risks before recommending anything, because a strong lock in a weak door or frame is a wasted investment.

How it works in Pomona

  1. 1

    Talk through your situation

    Call (323) 997-8867 and tell us what you are protecting: a front door, a rental unit, a storage container, a shop. We ask about the door type, who holds keys now, and any past break-in concerns so we can arrive prepared.

  2. 2

    Assess the door, frame, and existing hardware

    On site we inspect the lock, the strike plate, the frame, and the door itself. A high security cylinder only helps if the surrounding wood or metal can hold up to force, so we point out weak spots honestly.

  3. 3

    Choose the right level of protection

    We explain options such as pick- and bump-resistant cylinders, drill-resistant hardened components, and restricted keyways with controlled key duplication. We match them to your door and how many people need access, rather than upselling.

  4. 4

    Install and reinforce

    We fit the new hardware, and where it makes sense we add a reinforced strike plate, longer screws into the framing, or a door edge reinforcement. For older doors, we work carefully to avoid damaging original woodwork.

  5. 5

    Cut and test keys

    We cut the keys on site, test them repeatedly, and check that the bolt throws smoothly. We explain how restricted key duplication works so you know how to authorize additional copies later.

  6. 6

    Walk through care and follow-up

    We show you how the lock should feel, how to keep it lubricated properly, and what to do if a key is lost. If you need more keys or a master-keyed layout for multiple units, we can handle that later.

Need high security locks in Pomona?

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 brand of lock you choose, since restricted-keyway and hardened designs vary widely in construction and cost.
  • The number of doors or units being done in one visit, which affects the time on site and how hardware can be grouped.
  • The condition of the door and frame, including whether reinforcement, strike upgrades, or minor carpentry are needed to make the lock effective.
  • The type of door, such as an aluminum storefront, a steel commercial door, or an older wood door with a mortise pocket, each of which needs different hardware and labor.
  • Key requirements, including how many restricted keys you need and whether a master-key arrangement is involved.
  • The time of day and urgency of the call, since after-hours and emergency work involves different scheduling than a planned installation.

Why Pomona chooses us

  • Fully mobile service means everything is done at your door, with no need to drive anywhere or leave a property unsecured.
  • Serving Greater Los Angeles and Ventura County since 1987 gives us long experience with both historic hardware and current high security systems.
  • We are available 24/7, so a security upgrade after a break-in does not have to wait until morning.
  • We evaluate the door and frame, not just the cylinder, and will tell you when a lower-cost fix is the better answer.
  • We can work with older mortise hardware in historic homes and recommend period-sensitive options instead of forcing a modern replacement.
  • Multi-unit and business jobs can be organized into a single visit, with keys cut and tested on site.

High Security Locks across Pomona

Pomona has a wide mix of buildings, and each calls for a different approach. In the Lincoln Park Historic District, Queen Anne Victorians and 1900s to 1920s Craftsman homes often still carry original mortise locks and skeleton-key sets. Upgrading these usually means servicing or rekeying the mortise body, or adding a high security deadbolt carefully so the door's character is preserved. Ganesha Hills' period revival homes from the 1920s to 40s have similar considerations, while Phillips Ranch tract homes from the 1970s and 80s typically accept a straightforward high security cylinder upgrade.

Downtown, around the Arts Colony, Antique Row on 2nd Street, and the dA Center for the Arts, brick commercial buildings and loft conversions may need restricted-key systems that limit who can copy keys, especially where several tenants or staff share access. Along Holt Ave and Garey Ave, aluminum-storefront retail often benefits from hardened cylinders and properly set strikes. In Westmont and near Cal Poly Pomona and Western University of Health Sciences, landlords with student rentals can use restricted keys so a lost key does not mean an uncontrolled copy floating around.

We serve Pomona ZIP codes 91766, 91767, 91768, and 91769, and travel the I-10, SR-60, SR-57, and SR-71 corridors to reach you. Whether it is a residence near Pomona Valley Hospital Medical Center or a vendor securing equipment during Fairplex's LA County Fair setup, 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.

Call (323) 997-8867

Other Pomona locksmith services

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

High Security Locks in Pomona — FAQs

What makes a lock 'high security'?
High security locks combine pick-resistant and bump-resistant pin designs, hardened parts that resist drilling, and often restricted keys that cannot be copied freely. The result is a lock that takes much more skill, time, and noise to defeat. Call (323) 997-8867 to discuss which fits your door.
Will a high security lock work on my old Craftsman or Victorian door?
Often yes, but it depends on the door. In Lincoln Park Historic District homes we may service or rekey the original mortise lock, or add a high security deadbolt in a way that avoids damaging the woodwork. We inspect first and recommend what suits the door.
Do I still need a strong door and frame?
Yes. A hardened lock can be bypassed if the strike plate or frame gives way. We usually check these and may suggest a reinforced strike or longer screws so the whole system holds together.
Can you install high security locks on several rental units at once?
Yes. For landlords near Cal Poly Pomona or in Westmont, we can do multiple units in one mobile visit and cut and test the keys on site. Call (323) 997-8867 to plan a visit around tenant turnover.
What are restricted keys?
Restricted keys use a keyway and blank that are controlled, so copies generally need authorization instead of being cut at any kiosk. This helps landlords, businesses, and families keep track of who holds a key.
Do you offer high security options for storefronts on Holt or Garey?
Yes. We can fit hardened cylinders and suitable hardware for aluminum-storefront and commercial doors, and check that the strike and frame are set up properly.
Do you have a shop I can visit?
No. We are fully mobile and work at your location, whether home, business, or event site. There is no storefront, so just call and we come to you.
Can you help if a padlock seizes at Fairplex?
Yes. We can cut a seized padlock on site and replace it with a stronger one, including during busy setup periods. Call (323) 997-8867 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