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Crenshaw Lock

Lock Installation in Altadena · 24/7 mobile

Lock Installation in Altadena, California

Crenshaw Lock Company installs new locks in Altadena, California on new doors, rebuilds, gates and openings that never had hardware. We are fully mobile and available 24/7, so we come to your site. Call (323) 997-8867 to describe the doors and plan the installation.

  • Mobile to your Altadena location
  • Available 24/7
  • Price quoted before we start
Call (323) 997-8867or tap to call — we answer 24/7
New deadbolt being fastened to a white front door
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Lock installation is different from replacing or rekeying a lock that is already there. Here you are starting from a bare door, a freshly framed opening, or a gate that has never been secured. In Altadena that situation is more common than usual. After the January 2025 Eaton Fire destroyed thousands of homes, a lot of the community is now rebuilding, and every new door needs hardware that is chosen, installed and keyed with some thought.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, led by owner and lead technician David Shar. We are a mobile-only business with no storefront, so the work happens at your property, whether that is a framed house under construction off Lake Ave, a surviving bungalow in Janes Village that needs an added door lock, or a side gate on a larger foothill lot.

A good installation is about more than drilling a hole. The door has to be prepared correctly, the bore and edge must be square, the strike must be set into solid framing, and the keying has to match how you actually live or build. That might mean one key for every exterior door, a simple master-key arrangement for a builder and owner, or separate keys for a guest house and a main house. We help you decide before we start cutting.

How it works in Altadena

  1. 1

    Talk through the doors and the goal

    Call (323) 997-8867 and tell us what you are securing: new construction doors, an added door on an existing home, a gate, or a shed or detached unit. We ask about door material, thickness, and whether the door is hung yet, so we arrive with suitable hardware.

  2. 2

    Check the door, frame and site

    On arrival we inspect each opening. We look at door thickness, material, framing around the strike, and whether the door hangs true. On rebuilds we also ask about construction stage, since finish work and painting can affect when final hardware should go in.

  3. 3

    Choose hardware and a keying plan

    We go over deadbolts, handlesets, knobs, levers and gate hardware, and settle how the keys should work. Options include everything keyed alike, a simple master-key system, or different keys for different doors. Contractors can also set up lockboxes for jobsite access.

  4. 4

    Prepare the door and install

    We mark and bore the door, cut the edge, mortise for the latch and strike, and mount the lock so the bolt throws smoothly into the frame. Where framing is weak we reinforce the strike area so the lock is only as strong as the wood behind it.

  5. 5

    Test, key and hand over

    We operate every lock repeatedly with the door open and closed, check alignment, and confirm each key works as planned. You receive your keys and a clear explanation of which key opens what, so nothing is guesswork after we leave.

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What affects the price

  • The number of doors or gates being fitted, since each opening needs its own preparation and testing.
  • The type and grade of hardware you choose, from standard deadbolts to higher-security or decorative handlesets.
  • Whether the door is already bored or is a bare slab that requires new bore and edge preparation.
  • Door material and condition, as solid wood, steel, fiberglass and metal gates all require different tools and handling.
  • Keying complexity, such as all keyed alike versus a master-key system with several levels of access.
  • Whether framing needs reinforcement and whether the visit is scheduled or comes at night or on a weekend.

Why Altadena chooses us

  • We are fully mobile, so installation happens at your door, including on active construction sites where you cannot leave to pick up hardware.
  • We have worked in the trade since 1987, and David Shar leads the work, so you get hands-on experience rather than a handoff.
  • We plan keying around real situations such as rebuilds, contractor access and multi-building lots, rather than defaulting to one key pattern.
  • We pay attention to the frame and strike, not only the lock, because a strong lock in weak framing is not real security.
  • We are available 24/7, which helps when a new door has to be secured right away after framing or a break-in at a vacant site.
  • We explain options plainly and don't push upgrades you don't need.

Lock Installation across Altadena

Altadena's building stock tells a story that shapes this work. Janes Village and the surrounding streets hold many 1910s to 1940s Craftsman bungalows, with Spanish Colonial and mid-century homes mixed in. Older homes often have original doors of varying thickness, so adding a deadbolt or a second entry lock means fitting hardware to doors that were never standardized. Careful boring and a solid strike matter more here than on a modern prehung door.

Since the Eaton Fire, a great deal of installation work in Altadena involves fresh starts. Rebuilds in the 91001 and 91003 ZIP codes need all-new locksets, often keyed alike or on a simple master system so the builder, owner and trades can be managed cleanly. Contractor lockboxes help control jobsite access while crews come and go. On the larger hillside lots near Christmas Tree Lane on Santa Rosa Avenue, the Altadena Country Club and The Meadows, gate and side-yard locks are part of the picture too.

Whether your property sits near Lincoln Ave, Fair Oaks Ave, Altadena Dr or Woodbury Rd, or up toward the Cobb Estate and Sam Merrill Trailhead, we come to you. Call (323) 997-8867 any hour and we will talk through your doors, your timeline and the best way to secure them.

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Other Altadena locksmith services

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

Lock Installation in Altadena — FAQs

What is the difference between lock installation and lock replacement?
Installation means putting a lock where none existed, such as a new door, an added entry, or a gate. That often needs boring the door and preparing the edge and frame. Call (323) 997-8867 if you are unsure which applies.
Can you install locks on a home that is still being rebuilt after the Eaton Fire?
Yes. We supply and install new locksets on rebuilds and can set up keying so one key or a simple master system covers the doors. Timing matters, so we usually discuss the construction stage first.
Can you set up a master-key system for a builder and owner?
Yes, we can create a simple master-key arrangement so a builder, owner or other trades have the access they need. Contractor lockboxes can also control who can reach keys on a jobsite.
Do I need to buy the hardware first?
Not necessarily. We can supply hardware matched to your door and keying plan. If you already have locks, tell us the brand and type when you call (323) 997-8867 so we can confirm they suit your doors.
Can you install a lock on an older Craftsman door?
Usually yes. Older doors vary in thickness and condition, so we inspect first and fit hardware accordingly. We pay attention to the door and frame so the finished lock works smoothly and securely.
Do you install gate and side-yard locks?
Yes. Larger Altadena lots often have gates and side-yard access that deserve proper locks. We look at the gate material, latch style and weather exposure, then recommend suitable hardware.
What affects the cost of installing new locks?
Main factors are how many doors, the hardware grade, whether the door is already bored, the door material, keying complexity and the time of day. We discuss these with you before work begins.
Are you available at night or on weekends?
Yes. We are available 24/7 and fully mobile, so we can secure a new or vacant door outside normal hours. We have no storefront, as everything is done at your property.
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