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Crenshaw Lock

Deadbolt Installation in Pasadena · 24/7 mobile

Deadbolt Installation in Pasadena, California

Crenshaw Lock Company provides mobile deadbolt installation in Pasadena, California, 24/7. We add or replace single- and double-cylinder deadbolts on homes, apartments and storefronts, and we come to your door with the tools and hardware. Call (323) 997-8867 to talk through your door and get started.

  • Mobile to your Pasadena 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 upgrades that makes a real difference to how secure a door is. In Pasadena the doors vary enormously: a solid-wood Craftsman front door from the 1920s, a hollow-core door on a mid-century courtyard apartment, an aluminum-frame glass door on a Colorado Boulevard shop. Each one calls for a different approach, and a deadbolt that suits one can be wrong for another.

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, with no storefront to visit. We work on your door at your address, any hour of the day or night, so a new deadbolt can be installed when it suits you or when a break-in, a lost key, or a failed lock makes it urgent.

This page explains how a deadbolt installation works, what shapes the price, and what is special about doing this work in Pasadena, where historic hardware, older doors, and a mix of rentals and commercial frontage all show up in the same week.

How it works in Pasadena

  1. 1

    Talk through the door and the goal

    Call (323) 997-8867 and tell us what you want: a first deadbolt on a door that only has a knob, a replacement for a worn or damaged one, or a better lock after a move. Describe the door material, whether it is a front door, back door or storefront, and whether you want a keyed cylinder on the inside as well. That helps us bring suitable hardware.

  2. 2

    Inspect the door, frame and existing hardware

    On site we look at the door's thickness, condition, and the strike side of the frame. A deadbolt is only as strong as the wood it is anchored into, so we check for cracked jambs, loose hinges and thin or split door edges. On older Pasadena doors we also note any original hardware, since we want to avoid unnecessary damage to period doors.

  3. 3

    Choose single or double cylinder

    A single-cylinder deadbolt uses a key outside and a thumb-turn inside, which is the easiest and safest for most households. A double-cylinder needs a key on both sides and can make sense next to glass, but it can slow exit in an emergency and may be restricted by local codes or a landlord. We explain the tradeoffs and let you decide.

  4. 4

    Prepare the door and install the deadbolt

    If the door has no bore, we drill the cross-bore and edge-bore with proper jigs to keep the cut clean. If we're replacing a deadbolt, we match the existing holes where we can. We fit the latch, bolt, and cylinder, and install a strike plate with long screws that reach into the framing, not just the thin jamb trim.

  5. 5

    Test, key, and hand over

    We cycle the bolt several times with the door open and closed, check alignment, and confirm that the key works smoothly from outside and the thumb-turn from inside. If you want several locks on one key, or the new deadbolt keyed to match an existing one, we can arrange that. You leave with working keys and a door that closes and locks properly.

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What affects the price

  • Whether the door already has a bored hole for a deadbolt or needs a new one drilled, which adds labor and care on older solid-wood doors.
  • The grade and brand of the deadbolt you choose, from standard residential hardware up to higher-security cylinders with pick and drill resistance.
  • Single-cylinder versus double-cylinder, and how many deadbolts need to be keyed alike across front, back and side doors.
  • Door and frame condition: a cracked jamb, split door edge or loose hinge may need reinforcement to make the deadbolt actually effective.
  • Door material and type, since solid wood, hollow-core, metal, and aluminum-frame glass doors each need different tools and fittings.
  • Time of day and urgency, because an after-hours or emergency visit differs from a scheduled daytime installation.

Why Pasadena chooses us

  • Fully mobile since 1987: we come to your Pasadena door with the equipment to bore, fit and test a deadbolt on the spot.
  • Available 24/7, so a deadbolt can go in right after a break-in, a move-out, or a lost set of keys rather than waiting for business hours.
  • We look at the frame and strike, not only the lock. A strong bolt screwed into a weak jamb gives a false sense of security, so we say so and fix it.
  • Respect for older doors: on Craftsman-era wood and historic hardware we work to keep original character and avoid unnecessary damage.
  • Honest advice on single versus double cylinder, including when a double-cylinder is a poor idea for fire safety or tenant rules.
  • Owner-led: David Shar's decades of experience shape how the work is done, and we do not push upgrades you do not need.

Deadbolt Installation across Pasadena

Pasadena's housing makes deadbolt work more varied than in most cities. In Bungalow Heaven, the historic district full of 1900s-1930s Craftsman bungalows, original mortise locks, rim locks and brass escutcheons are part of the home's character, and the district's rules favor preserving them. We can add a deadbolt thoughtfully, or rekey existing hardware after a sale, without gouging old wood or replacing everything with modern sets. Madison Heights and Oak Knoll, with their 1910s-1920s estates, often have heavy solid doors that take a deadbolt well when drilled carefully.

Elsewhere, mid-century apartment courts near PCC and Caltech and along Lake Avenue often have lightweight doors, and landlords sometimes ask for a deadbolt upgrade on a courtyard unit between tenants. Around Old Pasadena and the Playhouse District, shops along Colorado Boulevard and Fair Oaks Avenue use aluminum-frame glass doors that need narrow-stile hardware, and a failed cylinder before opening can't wait. In Hastings Ranch and Garfield Heights, we see a mix of family homes where an added back-door or side-door deadbolt is a common request.

We serve addresses throughout Pasadena, including ZIP codes 91101, 91103, 91104, 91105, 91106 and 91107, whether you are near the Rose Bowl, the Norton Simon Museum, Huntington Hospital, or off the I-210, SR-134 or Arroyo Seco corridors. Call (323) 997-8867 any time.

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Other Pasadena locksmith services

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

Deadbolt Installation in Pasadena — FAQs

Can you install a deadbolt on a door that only has a knob?
Yes. If the door is thick enough and in good condition, we drill the bores for a deadbolt and fit it. We also check the frame so the bolt has something solid to anchor into. Call (323) 997-8867 to describe your door.
Will a new deadbolt damage my historic Craftsman door in Bungalow Heaven?
We work carefully to limit damage. Sometimes we can add a deadbolt in a spot that does not disturb original hardware, or rekey existing mortise and rim locks instead. We look at the door first and explain the options before cutting anything.
What is the difference between single- and double-cylinder deadbolts?
A single-cylinder uses a key outside and a thumb-turn inside. A double-cylinder needs a key on both sides. Double-cylinders can help near glass but can slow escape in a fire, so we often recommend single-cylinder unless there is a specific reason.
Do you install deadbolts at night or on weekends?
Yes, we are available 24/7 and fully mobile. If you need a deadbolt after a break-in or lockout, call (323) 997-8867 and we will talk through what is needed.
I'm a landlord near Caltech or PCC. Can you upgrade deadbolts between tenants?
Yes. We install or replace deadbolts on apartment and courtyard units, and can key several doors alike if you want. Tell us how many doors and what hardware you prefer.
Can you put a deadbolt on an aluminum storefront door on Colorado Boulevard?
Often yes, but these doors have narrow stiles and need hardware designed for them. We inspect the door and recommend a compatible option or repair a failing cylinder.
How is the price of a deadbolt installation determined?
It depends on the hardware grade, whether the door is already bored, single or double cylinder, door and frame condition, and timing. We explain these factors up front rather than guessing. Call (323) 997-8867 to discuss your door.
Does a deadbolt make my door fully secure?
It helps a great deal, but the door, frame, hinges and strike plate all matter. We reinforce weak points where needed so the deadbolt performs as intended.
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