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Crenshaw Lock

Lock Replacement in Monrovia · 24/7 mobile

Lock Replacement in Monrovia, California

Crenshaw Lock Company provides 24/7 mobile lock replacement in Monrovia, California. We come to your home or shop, remove worn, damaged or outdated hardware, and install new locks suited to your door. Call (323) 997-8867 to talk through your door and what it needs.

  • Mobile to your Monrovia location
  • Available 24/7
  • Price quoted before we start
Call (323) 997-8867or tap to call — we answer 24/7
New matte black lock set beside an old worn brass lock
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Locks wear out, get damaged, or simply stop matching the way you live. A deadbolt that sticks in the cold morning air, a knob that spins loose, a lock left over from the last owner, or hardware that was forced during a break-in are all good reasons to replace rather than patch. Lock replacement means swapping the old hardware for new hardware chosen for your door, your security needs, and how many keys you want in circulation.

Monrovia makes this job more interesting than it sounds. The city has a deep stock of 1900s to 1930s Craftsman bungalows and Victorians, especially in and around Old Town, many with original mortise and rim hardware. Some of those locks are worth saving and rekeying. Others are worn past the point of being trustworthy, and need a careful replacement that respects a vintage door instead of drilling it apart. Up in the hillside neighborhoods, newer and mid-century homes bring a different set of doors, gates and outbuildings.

Crenshaw Lock Company has been serving Greater Los Angeles and Ventura County since 1987, led by owner and lead technician David Shar. We are fully mobile, so there is no storefront to visit. We bring the work to your door, around the clock, and we will tell you plainly whether replacing, rekeying or repairing makes the most sense before anything is installed.

How it works in Monrovia

  1. 1

    Tell us about the door and the problem

    Call (323) 997-8867 and describe what is going on: a sticking deadbolt, a damaged cylinder, a lock after a break-in, or hardware you simply want upgraded. Details about the door's age and style help us bring the right parts.

  2. 2

    Look at the door and the existing hardware

    On site, we examine the lock, the strike, the latch and the door itself. On older Monrovia homes we check whether original mortise or rim hardware can be kept, rekeyed or restored rather than replaced.

  3. 3

    Recommend the right option

    We explain whether a full replacement, a cylinder swap or a rekey best fits your situation. You decide before work starts, so there are no surprises about what is being removed or installed.

  4. 4

    Remove the old lock with care

    We take out the old hardware while protecting the door's finish and wood, which matters on vintage Craftsman doors and painted trim that are hard to match.

  5. 5

    Install and align the new hardware

    New locks are fitted, and the latch, bolt and strike plate are aligned so the door closes smoothly and the bolt throws fully without forcing. Where it makes sense, we can key several locks alike.

  6. 6

    Test and hand over keys

    We operate every lock multiple times from both sides, confirm the keys work, and walk you through the finished job before we leave.

Need lock replacement in Monrovia?

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 lock: a standard deadbolt, a smart or keypad lock, and a high-security cylinder each involve different hardware.
  • Door condition and preparation: a door that needs boring, alignment work or repair of a damaged edge takes more time than a straightforward swap.
  • Vintage hardware: mortise and rim locks on older homes may need specialized parts or careful handling to preserve the original door.
  • The number of locks: replacing a single entry lock differs from doing every door, side gate and outbuilding on a larger hillside lot, especially if keyed alike.
  • Brand, grade and finish of the new hardware you choose.
  • Time of day: after-hours and emergency calls, such as a lock damaged in a break-in, can be priced differently from scheduled daytime work.

Why Monrovia chooses us

  • Fully mobile, 24/7 service: we come to your Monrovia door, and there is no shop to drive to.
  • In business since 1987, with the owner, David Shar, as lead technician rather than an anonymous dispatcher.
  • Experience with older mortise and rim hardware, so period doors can be kept intact when restoring or rekeying is the better choice.
  • We tell you when replacement is not necessary: a rekey or repair is often enough, and we will say so.
  • Work across residential and commercial doors, from Craftsman fronts to Myrtle Avenue shop entries.
  • We test every lock before leaving and make sure keys, latch and strike all work together.

Lock Replacement across Monrovia

Monrovia's housing tells you what to expect behind the door. In Old Town Monrovia, around Myrtle Avenue and Library Park, many Craftsman bungalows and Victorians still carry their original mortise and rim hardware. After a home sale, the usual question is whether to keep that hardware and rekey it or replace it, and we are glad to preserve vintage doors when the lock underneath is sound. In ZIP code 91016, that can mean a careful swap rather than a drill-and-patch job.

Old Town's walkable stretch of Myrtle Avenue also has small shops and restaurants with mixed-age commercial locks. A worn storefront lock, a lockout, or a rekey after a staffing change are common reasons to call, and we can handle commercial replacement alongside the residential work.

North Monrovia and the foothill streets above Foothill Boulevard, including parts of ZIP code 91017 toward Monrovia Canyon Park, have hillside custom and mid-century homes on larger lots. These often have long driveways and side-yard gates, so a lock replacement may include more than the front door. Whether you are near Mayflower Village, off Huntington Drive, close to the Metro A Line station, or just off the I-210, 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 Monrovia locksmith services

See all of our Monrovia services, or our citywide lock replacement page.

Lock Replacement in Monrovia — FAQs

Do you offer lock replacement in Monrovia at night and on weekends?
Yes. Crenshaw Lock Company is 24/7 and fully mobile. Call (323) 997-8867 any time and we will talk through what you need.
Should I replace my locks or just rekey them?
If the hardware is in good shape, rekeying changes which keys work without replacing the lock. If it is worn, damaged, or outdated, replacement makes more sense. We will explain the difference at your door before doing anything.
Can you replace locks on an old Craftsman or Victorian door in Old Town?
Yes. We work with older mortise and rim hardware and try to avoid damaging vintage doors. Sometimes the original lock can be kept and rekeyed instead.
Do I need to replace my locks after buying a home in Monrovia?
It is a smart step, since you cannot know who holds old keys. Depending on the hardware, a rekey or a full replacement can both work, and we can advise on which fits.
Can you replace locks on gates and outbuildings on a larger lot?
Yes. Many hillside properties above Foothill Boulevard have driveway and side-yard gates. We can replace or rekey those and key them to match your house if you like.
Do you replace commercial locks for Myrtle Avenue shops and restaurants?
Yes. We handle storefront lock replacement, rekeys and lockouts. Call (323) 997-8867 to describe your door.
How is the price of lock replacement determined?
It depends on the lock type and grade, the condition of the door, the number of locks, any vintage hardware involved, and the time of day. We explain the options before work begins.
Is there a shop I can visit in Monrovia?
No. We are mobile only and come directly to your home or business, so you never need to travel with a broken lock.
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