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Crenshaw Lock

Deadbolt Installation in Altadena · 24/7 mobile

Deadbolt Installation in Altadena, CA

Crenshaw Lock Company provides mobile deadbolt installation in Altadena, California, available 24/7. We come to your home or rebuild site and add or replace single- or double-cylinder deadbolts. Call (323) 997-8867 to talk through your door and get scheduled.

  • Mobile to your Altadena location
  • Available 24/7
  • Price quoted before we start
Call (323) 997-8867or tap to call — we answer 24/7
Deadbolt bolt extended into a reinforced strike plate
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A deadbolt is one of the simplest upgrades that makes a door meaningfully harder to defeat, and in Altadena the reasons to install one right now are varied. Some homeowners are living in surviving bungalows and want sturdier hardware. Others are building back after the January 2025 Eaton Fire and need all-new locksets on fresh doors. Either way, the job is the same at its core: fit a solid bolt into a properly prepared door and frame so it actually does its job.

Crenshaw Lock Company has served 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 hardware and tools to your door, whether that is a Craftsman front door in Janes Village, a hillside entry up toward the foothills, or a new door on a construction site.

We will help you choose between single- and double-cylinder, look at the door and strike area before drilling anything, and install the bolt so it throws smoothly and seats firmly. If an older door needs a little preparation first, we will tell you plainly what that involves rather than just bolting hardware onto a weak spot.

How it works in Altadena

  1. 1

    Talk through the door and the goal

    Call (323) 997-8867 and tell us what you have: a new door, an older Craftsman door, a rebuild, or a lock that is failing. We ask about door material, thickness, and whether you want a keyed-alike setup with other locks.

  2. 2

    Inspect the door, frame, and strike area

    On site we check the door edge, the existing bore holes, and the condition of the jamb. Older wood doors in Altadena can be worn or previously drilled, and the frame matters as much as the bolt itself.

  3. 3

    Choose single or double cylinder

    A single-cylinder bolt turns with a key outside and a thumb-turn inside. A double-cylinder needs a key on both sides, which can suit doors with glass nearby but needs careful thought about getting out quickly in an emergency. We explain the tradeoffs honestly.

  4. 4

    Prepare and install

    We bore or adjust the door as needed, set the latch and strike, and fit the bolt so it extends cleanly into the frame. Where it makes sense, we recommend a reinforced strike plate with longer screws that reach the framing.

  5. 5

    Test and key it

    We cycle the bolt repeatedly with the door open and closed, check alignment, and confirm every key works. We can key it to match your other locks or set it up as part of a simple master-key arrangement on a larger project.

  6. 6

    Walk through before we leave

    We show you how the lock operates, hand over keys, and point out anything else on the door worth attention, such as a loose hinge or a gap in the frame.

Need deadbolt installation in Altadena?

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

Call (323) 997-8867

What affects the price

  • Whether you are adding a new deadbolt to a bare door or replacing an existing one, since fresh drilling takes more work than a swap.
  • Single-cylinder versus double-cylinder hardware, and the grade and finish of the bolt you choose.
  • Door material and condition, including older solid wood, hollow-core, or doors that have been bored before and need repair.
  • Frame and strike reinforcement, such as a heavy-duty strike plate and longer screws.
  • Number of locks, and whether they need to be keyed alike or tied into a master-key system, as on a rebuild.
  • Timing and location of the visit, including after-hours calls and how far into the hills the property is.

Why Altadena chooses us

  • Fully mobile service: we come to your door, and there is no shop to drive to.
  • Available 24/7, which helps when a door cannot be secured overnight on a rebuild or after a break-in.
  • In business since 1987, with David Shar as owner and lead technician.
  • Experience with keyed-alike and simple master-key systems, useful for rebuilds with multiple doors and gates.
  • We check the frame and strike, not just the bolt, and tell you honestly if a door is too compromised to hold good hardware.
  • We can also free and rekey seized cylinders, so you do not have to replace hardware that can be saved.

Deadbolt Installation across Altadena

Altadena's housing mix shapes what a deadbolt job looks like here. Janes Village is full of 1910s to 1940s Craftsman bungalows, and their original doors are often solid wood with old mortise or tubular bores that need care when adding a modern bolt. Spanish Colonial and mid-century homes bring their own door styles, and larger lots near Christmas Tree Lane on Santa Rosa Avenue or around the Altadena Country Club often include side gates and secondary entries that deserve the same attention as the front door.

The January 2025 Eaton Fire changed much of the local work. On surviving homes, smoke, soot, and months of ash exposure can leave cylinders stiff or seized, and we can often free and rekey them rather than replace them. On rebuilds, we supply and key new locksets, set up simple master-key systems, and help contractors secure jobsites with lockboxes. Families who have bought a home near The Meadows or up toward the Cobb Estate and Sam Merrill Trailhead often want everything rekeyed from the start.

We serve ZIP codes 91001 and 91003, from Lake Ave, Lincoln Ave, and Fair Oaks Ave to Altadena Dr and Woodbury Rd, and the areas near Charles White Park and Farnsworth Park. Call (323) 997-8867 any hour.

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Other Altadena locksmith services

See all of our Altadena services, or our citywide deadbolt installation page.

Deadbolt Installation in Altadena — FAQs

Can you install a deadbolt on a door that does not have one?
Yes. We drill the door and prepare the edge and frame for a new bolt. We check the door thickness and condition first, then fit the hardware. Call (323) 997-8867 to describe your door.
Should I choose a single- or double-cylinder deadbolt?
Single-cylinder is the usual choice for most entry doors because you can open it from inside without a key. Double-cylinder can make sense near glass, but it can slow your exit in an emergency, so we talk through it before you decide.
Do you work on the older Craftsman doors in Janes Village?
Yes. Older solid wood doors are common there. We look at existing bores and the jamb carefully so the new bolt fits cleanly without weakening the door.
My deadbolt seized after the Eaton Fire. Can it be saved?
Often, yes. Soot and ash can gum up cylinders. We try to free and rekey them first, and replace only what cannot be restored. Call (323) 997-8867 for a look.
Can you set up locks for a rebuild with several doors?
Yes. We supply and key new locksets, can keep them keyed alike, and can set up a simple master-key system. We can also help with contractor lockboxes for the jobsite.
Do you come out at night or on weekends?
We are available 24/7 and fully mobile. Call and we will schedule the visit to your Altadena address.
Do you also handle gates and side-yard locks?
Yes, on larger lots we can fit or rekey gate and side-yard locks so they work with the same key as your main doors if you wish.
What affects the cost of a deadbolt installation?
Mainly whether it is a new install or a swap, the hardware grade, the condition of the door and frame, and how many locks are involved. We explain the factors when you call (323) 997-8867.
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