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Crenshaw Lock

Deadbolt Installation in San Marino · 24/7 mobile

Deadbolt Installation in San Marino, California

Crenshaw Lock Company installs and replaces single- and double-cylinder deadbolts in San Marino, California, 24/7, coming to your door as a fully mobile service. We work with period-revival homes and solid-wood doors. For a deadbolt installation, call (323) 997-8867 any hour.

  • Mobile to your San Marino 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 the lock that does the real work on an exterior door. In San Marino, where many homes date to the 1920s and 1930s, the door in front of you may be thick solid wood with original hardware that deserves care. Adding or replacing a deadbolt here is rarely a swap-and-go job. It calls for judgment about the door, the frame, and the look of the house.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and owner and lead technician David Shar has spent decades on doors of every age. We are a 24/7, fully mobile locksmith. There is no storefront to visit. We bring the tools, cylinders, and hardware to your property, whether you are near the Huntington Library, around Lacy Park, or along Huntington Drive.

We install single-cylinder deadbolts, which turn with a thumb-turn inside, and double-cylinder deadbolts, which need a key on both sides. Each suits different situations, and we will explain the tradeoffs honestly, including safety considerations around exits, so you can choose what fits your household.

How it works in San Marino

  1. 1

    Talk through the door and your goal

    Call (323) 997-8867 and tell us whether you are adding a first deadbolt, replacing a worn one, or upgrading after a lost key or staff change. We ask about the door material, its age, and any existing hardware.

  2. 2

    Inspect the door and frame on site

    We check the door thickness, the edge, the strike area, and the frame. Older solid-wood doors and mortise-equipped doors need different approaches, and we look for any weak spots before drilling anything.

  3. 3

    Choose the right deadbolt

    We help you pick between single- and double-cylinder, and between standard and higher-security cylinders. Finish matters in San Marino, so we discuss brass, bronze, and other looks that suit the home.

  4. 4

    Install with care for the wood

    We prepare the door and frame with clean, accurate cuts, set the bolt, and fit the strike plate with long screws that reach the framing. On period doors we aim to keep the original character intact.

  5. 5

    Test, key, and walk through

    We run the bolt repeatedly, check alignment, and confirm the keys work smoothly. If you want, we can key the new deadbolt to match your other locks so one key does more.

Need deadbolt installation in San Marino?

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

Call (323) 997-8867

What affects the price

  • Whether this is a new installation requiring fresh holes in the door or a replacement that fits an existing bore
  • The cylinder grade you choose, from standard to higher-security options with greater pick and drill resistance
  • Single-cylinder versus double-cylinder configuration
  • Door material and condition, including thick solid wood, older doors, or doors needing reinforcement
  • How many doors you want done, and whether you want them keyed alike or rekeyed to existing locks
  • Finish and style requirements, such as matching vintage brass or a specific hardware look
  • Time of day, since we are available around the clock including nights and weekends

Why San Marino chooses us

  • Fully mobile service: we come to your San Marino property with hardware on hand, with no storefront trip required
  • Serving the Los Angeles area since 1987, with experience on older solid-wood doors and period hardware
  • Owner-led work under David Shar, so you deal with a seasoned locksmith and not a script
  • Open about single- versus double-cylinder tradeoffs, including egress and safety concerns, instead of pushing one option
  • Care for original hardware: we can add security while preserving the appearance of vintage brass and period details
  • Available 24/7, useful after a lost key, a staff change, or a break-in attempt that damages a lock

Deadbolt Installation across San Marino

San Marino is an almost entirely residential city, with large 1920s and 1930s estates in Spanish Colonial, Tudor, and Georgian styles on generous lots. Around the Huntington Library district, many homes still carry original mortise hardware and heavy wood doors. A common request is to add a high-security cylinder while keeping the vintage brass look, and that takes a careful hand and the right parts.

In the Lacy Park neighborhood and across 91108, we often see owners who want a stronger front door, side doors, and garden gates handled together, sometimes after a staff change or a lost key. Re-pinning everything to a single key is practical, and pairing it with new deadbolts on the main exterior doors makes the whole property more consistent. Some owners also want discreet smart-lock compatibility, and we can talk through what suits the door.

We travel the main routes, including Huntington Drive, Sierra Madre Boulevard, San Gabriel Boulevard, Del Mar Avenue, and Los Robles Avenue, and we also help small businesses in the Mission District along Huntington Drive. Strict zoning and preservation norms mean appearance matters here, so we choose finishes and installation methods that respect the character of the house.

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 San Marino locksmith services

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

Deadbolt Installation in San Marino — FAQs

Can you install a deadbolt on an old solid-wood door in San Marino?
Yes. Thick solid-wood doors are common in the city's 1920s and 1930s homes, and we cut carefully to protect the wood. Call (323) 997-8867 to describe your door and we will plan the right approach.
Should I choose a single- or double-cylinder deadbolt?
Single-cylinder turns with a thumb-turn inside and is easier to exit quickly. Double-cylinder needs a key on both sides, which can help near glass but may slow an emergency exit. We explain both so you can decide.
Will a new deadbolt change the look of my historic door?
It can be done to blend in. We discuss finishes, including brass and bronze tones, and aim to keep the door's character. If you have original mortise hardware, we can often add a deadbolt without removing it.
Can you add a deadbolt if I already have a mortise lock?
Often yes, depending on the door's width and the placement of the existing lock. We inspect first, then recommend whether to add a separate deadbolt or upgrade the cylinder in the mortise.
Do you handle several doors and gates at once?
Yes. We can install deadbolts on multiple exterior doors and rekey locks, including side and garden gates, so one key works throughout. Call (323) 997-8867 to talk through the scope.
Are you available at night or on weekends?
Yes, we are a 24/7 mobile locksmith. If a lock is damaged or a key is missing after hours, call (323) 997-8867 and we will help.
Do I need to visit a shop to choose my deadbolt?
No. We are mobile only, with no storefront. We bring options to your home and help you choose on the spot.
How is the price determined?
It depends on factors such as new installation versus replacement, cylinder grade, number of doors, door condition, and finish. We talk through these with you before starting work.
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