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Crenshaw Lock

Lock Replacement in San Marino · 24/7 mobile

Lock Replacement in San Marino, California

Crenshaw Lock Company provides mobile lock replacement in San Marino, California, 24 hours a day, 7 days a week. We come to your home, replace worn, damaged or outdated locks with new hardware, and respect period details. Call (323) 997-8867 to talk through your doors.

  • 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
New matte black lock set beside an old worn brass lock
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San Marino is a city of 1920s and 1930s period-revival homes: Spanish Colonial, Tudor and Georgian houses on generous lots, many with solid-wood doors and original hardware. A lock replacement here is rarely a simple swap. The door, the era of the house and the way the family lives all matter. Some locks have simply worn out after decades of use. Others are fine mechanically but no longer feel secure after a staff change, a lost key set or a break-in nearby.

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 work to your front door, garden gate or side entrance, whether you are near Huntington Drive, Lacy Park or the streets around the Huntington.

Our approach is to look first and recommend second. If your original mortise lock can be serviced or rekeyed and paired with a high-security cylinder, we will say so. If a lock is beyond saving, or you want a discreet smart-lock system that does not spoil the look of a carved door, we can replace it and explain the tradeoffs. Call (323) 997-8867 any hour to start the conversation.

How it works in San Marino

  1. 1

    Talk through the situation

    When you call (323) 997-8867, we ask what prompted the replacement: a lost key, wear, a move, a staff change or a security upgrade. We also ask about the door, the age of the house and any hardware you want to keep. That lets us arrive prepared.

  2. 2

    Inspect every door and gate

    On site we look at exterior doors, side doors, garden gates and any outbuildings. We check how existing locks operate, whether the door and frame are sound and whether original mortise hardware can be kept.

  3. 3

    Recommend repair, rekey or replacement

    Many period locks can be serviced and rekeyed rather than discarded. We explain which locks we would keep, which should be replaced and why, so the decision is yours and you understand it.

  4. 4

    Install the new hardware carefully

    We fit new locks with attention to solid-wood doors and vintage finishes, avoiding unnecessary drilling or visible damage. Strike plates, latches and alignment are checked so the lock works smoothly.

  5. 5

    Key everything to your needs

    We can key multiple locks alike so one key covers the house, gates and garden doors, or separate them where you want different access levels for family, staff and vendors.

  6. 6

    Test and hand over

    Before we leave, we operate every lock repeatedly with the door open and closed, confirm the keys work, and walk you through any smart-lock or high-security features.

Need lock replacement 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

  • The number of doors and gates being replaced, since large San Marino properties often have many entry points
  • The type of hardware: standard deadbolts, high-security cylinders, mortise sets or smart locks differ widely in cost
  • Whether original mortise hardware can be serviced and kept, or must be replaced
  • Door condition, including solid-wood or carved doors that need careful fitting
  • Keying requirements, such as one key for the whole property versus separate access levels
  • Time of day, since after-hours and emergency visits are handled differently than scheduled work

Why San Marino chooses us

  • Fully mobile service, so we come to your property rather than asking you to visit a shop
  • In business since 1987, with experience on older mortise and period hardware
  • Owner and lead tech David Shar leads the work, not an anonymous dispatcher
  • Willingness to preserve vintage brass and original hardware when it makes sense
  • Familiarity with high-security cylinders, safe deadbolts and discreet smart-lock options
  • Available 24/7, including evenings and weekends, for urgent lock problems

Lock Replacement across San Marino

San Marino, ZIP code 91108, is an almost entirely residential city, and its housing shapes how we approach lock replacement. Near the Huntington Library district, many homes are 1920s-era estates where original brass mortise hardware is part of the architecture. Replacing it outright can feel wrong, so we often service the existing lock and add a high-security cylinder for modern protection.

Around the Lacy Park neighborhood, larger estates tend to have several exterior doors, side entrances and garden gates. After a staff change or a lost set of keys, owners often want everything re-pinned to one key and the main deadbolts upgraded. We can plan that as a single visit, working from Huntington Drive, Sierra Madre Blvd, San Gabriel Blvd, Del Mar Ave or Los Robles Ave to reach your address.

The Mission District along Huntington Drive and Mission Street has modest neighborhood-scale commercial buildings, and we can help there too. Whether you live near El Molino Viejo, close to the Crowell Public Library or elsewhere in the city, call (323) 997-8867 and we will come to you.

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 lock replacement page.

Lock Replacement in San Marino — FAQs

Can you replace locks on my 1920s San Marino home without damaging the door?
Yes. We work carefully on solid-wood and carved doors, and we try to use existing bores and mortises where possible. Call (323) 997-8867 and describe your door so we can plan the right approach.
Do I have to replace my original mortise locks?
Not always. Many original mortise locks can be serviced and rekeyed, and we can add a high-security cylinder while keeping the vintage brass look. We will tell you honestly whether yours is worth keeping.
What is the difference between rekeying and replacing a lock?
Rekeying changes the internal pins so old keys stop working while keeping the same lock body. Replacement installs new hardware. Rekeying suits sound locks, while replacement suits worn, damaged or outdated ones.
Can all my doors and gates use one key?
Yes. We can key exterior doors, side doors and garden gates alike so a single key operates them all. This is common on large San Marino properties after a lost key or staff change.
Can you install discreet smart locks?
We can discuss smart-lock options that suit period homes and avoid a bulky modern look. We will explain how they work with your door, backup keys and security needs.
Do you offer lock replacement at night or on weekends?
Yes, we are available 24/7 and fully mobile. For after-hours needs in San Marino, call (323) 997-8867.
Can you upgrade to a safe deadbolt or high-security cylinder?
Yes. Many owners combine a whole-house rekey with a higher-security deadbolt or cylinder upgrade. We can recommend options based on your doors and how you use the property.
Do I need to be home during the replacement?
We prefer someone is present to confirm access and receive the new keys. If that is not possible, call (323) 997-8867 and we can discuss arrangements.
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