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Crenshaw Lock

Deadbolt Installation in Claremont · 24/7 mobile

Deadbolt Installation in Claremont, CA

Crenshaw Lock Company provides mobile deadbolt installation in Claremont, California, 24 hours a day, 7 days a week. We add or replace single- and double-cylinder deadbolts at your door, from Village bungalows to hillside homes. Call (323) 997-8867 to talk through your door and get started.

  • Mobile to your Claremont location
  • Available 24/7
  • Price quoted before we start
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Deadbolt bolt extended into a reinforced strike plate
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A deadbolt is one of the simplest ways to make a door harder to defeat, but only if it is the right lock, fitted correctly, in a door and frame that can support it. In Claremont that last part matters more than people expect. The city mixes century-old Craftsman doors with newer hillside construction, and the right approach for one is wrong for the other.

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. There is no storefront to visit; we bring the tools, hardware, and experience to your door, whether you need a first deadbolt on a door that has only a knob lock or a replacement for a worn, sticking, or poorly installed one.

This page explains how installation works, what affects the cost, and what is specific to Claremont: preservation-minded homeowners in the Village, rental properties near the Colleges, and families in North Claremont and Claraboya. If you would rather talk it through, call (323) 997-8867 any hour.

How it works in Claremont

  1. 1

    Talk through the door and your goal

    We start by learning what the door is, what it protects, and what bothers you about the current lock. Replacing a loose deadbolt, adding one to a bare door, and upgrading a rental entry are different jobs, and the conversation helps us bring suitable hardware.

  2. 2

    Inspect the door, edge, and frame

    At your door we check thickness, material, existing bore holes, and the strike side of the frame. A deadbolt is only as strong as the wood around it. On older Claremont doors we look for splits, prior patch work, and thin jambs before drilling anything.

  3. 3

    Choose single or double cylinder

    A single-cylinder deadbolt turns with a key outside and a thumb-turn inside. A double-cylinder needs a key on both sides, which can matter for doors with glass nearby, but it affects how quickly you can exit in an emergency. We explain the tradeoffs honestly and you decide.

  4. 4

    Install and reinforce

    We bore or reuse the openings, set the bolt and latch, and fit the strike plate with screws long enough to reach the framing. Where the frame is weak, we recommend reinforcement. We take care to keep the door's finish and character intact, especially on period homes.

  5. 5

    Test, key, and walk through

    We operate the lock repeatedly with the door open and closed, check alignment, and confirm the bolt throws fully. We can key it to match other locks when the hardware allows, then hand over keys and show you how it works.

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What affects the price

  • Whether you are adding a new deadbolt to a bare door or replacing an existing one, since new installs may need drilling and finishing work.
  • Single-cylinder versus double-cylinder hardware, and the grade and brand of lock you select.
  • Door material and condition, such as solid wood, hollow-core, metal, or an older door that needs repair before it can hold a lock.
  • Frame and strike reinforcement, which depends on how sound the jamb is.
  • Keying choices, including keyed-alike sets across several doors or compatibility with an existing key.
  • Time of day and location of the call, since we operate around the clock and travel to you.

Why Claremont chooses us

  • Fully mobile service: we come to your door in Claremont, with no shop visit or dropped-off hardware.
  • Experience since 1987, so we have handled everything from original wooden Craftsman doors to modern steel entries.
  • Respect for period homes: we aim to add security without butchering a door that owners have worked to preserve.
  • Honest recommendations on single versus double cylinder, including when a double-cylinder is a poor fit for safety reasons.
  • Frame-first thinking: we check and reinforce the strike side rather than just bolting a new lock into a weak jamb.
  • Available 24/7, so a broken-in-to door can be secured the same night instead of waiting for business hours.

Deadbolt Installation across Claremont

Claremont is an education-centered city at the eastern edge of Los Angeles County, and its housing reflects that. Around Claremont Village and the streets off Yale Ave, many homes are 1900s to 1920s Craftsman bungalows and period houses. Their original doors are often solid, beautiful, and sometimes thinner or more worn than a modern deadbolt prefers. Owners here frequently restore original mortise locks rather than replace them, and a well-placed deadbolt can work alongside that hardware without erasing it. We take care with bore size, placement, and finish on these doors.

Near The Claremont Colleges, including Pomona, Harvey Mudd, Scripps, Claremont McKenna, and Pitzer, there are off-campus houses and rentals where a deadbolt upgrade is a common request, particularly at lease turnover or after a lost key. Institutional buildings on campus run their own access-control and master-key systems, which is separate from residential deadbolt work, so we focus on the homes and small properties around them. In North Claremont and Claraboya, newer and hillside homes near Claremont Hills Wilderness Park often have different door styles and sometimes more isolated entries, where a solid deadbolt and sturdy strike matter.

Whether you are in ZIP 91711 near Indian Hill Blvd and Base Line Rd, or closer to Foothill Blvd and the 210, we travel to you. Call (323) 997-8867 and we will help you decide what suits your door.

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Other Claremont locksmith services

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

Deadbolt Installation in Claremont — FAQs

Can you install a deadbolt on an old Craftsman door in Claremont Village?
Often yes. We inspect the door's thickness and condition first, then bore carefully and choose hardware that suits it. If the door is fragile, we will tell you before drilling. Call (323) 997-8867 to describe your door.
Should I choose a single- or double-cylinder deadbolt?
Single-cylinder is the usual choice because you can exit quickly with the thumb-turn. Double-cylinder suits doors with nearby glass, but requires a key inside, which can slow escape in an emergency. We will talk through your door and layout.
Will a new deadbolt work with my existing mortise lock?
In many cases, yes. A separate deadbolt can sit above or below an original mortise lock, adding security while preserving the older hardware. We check the door's construction to confirm there is enough solid material.
Do you offer deadbolt installation at night or on weekends?
Yes. We are available 24/7 and fully mobile, so we can come to your Claremont home at any hour. Call (323) 997-8867 and we will talk through what you need.
Can you key several deadbolts to the same key?
Usually, yes. Keyed-alike hardware lets one key operate the front, back, and side doors. Availability depends on the lock brand and model you choose, and we can help you pick compatible hardware.
Is it enough to just replace the lock, or does the frame matter?
The frame matters a great deal. A strong bolt in a weak jamb can still fail. We check the strike side and recommend reinforcement and longer screws when needed.
Do you install deadbolts for rental properties near the Colleges?
Yes. Landlords and tenants often ask for new or rekeyed deadbolts between leases. We can fit new hardware and key it as you require. Do check your lease and get the owner's approval before changes.
Do I need to bring the lock to a shop?
No. We are mobile only, with no storefront. We come to your door in Claremont with hardware and tools, and complete the work on site.
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