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Crenshaw Lock

Door Closer Repair in San Marino · 24/7 mobile

Door Closer Repair in San Marino, California

Crenshaw Lock Company provides mobile door closer repair, adjustment and replacement for commercial doors in San Marino, California. We are available 24/7 and come to your building, with no storefront to visit. If a door slams, drifts open or won't latch, call (323) 997-8867.

  • 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
Hydraulic door closer mounted at the top of a commercial door
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A door closer is easy to ignore until it fails. Then a door that should swing shut and latch quietly either slams, hangs open, or stops short of the strike. In a commercial setting, that is more than an annoyance. A door that doesn't latch is a security gap, and a door that slams can be a hazard to staff, visitors and the frame itself. We repair, adjust and replace hydraulic door closers on commercial doors throughout San Marino.

San Marino is a quiet, mostly residential city, so its commercial and institutional doors tend to be modest in scale and carefully kept. Think of the shops and offices along Huntington Drive and Mission Street, professional suites, and community and civic buildings. Those doors are used all day, and a closer that has worn out or drifted out of adjustment spoils the look of a well-kept property. Often a repair is nothing more than a tune-up of the valves and arm. Sometimes the unit has leaked fluid or cracked and needs replacing.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and David Shar leads the work. We are fully mobile, so we bring the tools and common closer parts to you and work on the door where it hangs. We will tell you plainly whether your closer can be saved or whether replacement makes more sense.

How it works in San Marino

  1. 1

    Tell us what the door is doing

    Call (323) 997-8867 and describe the symptom: slamming, slow closing, failing to latch, hanging open, or oil on the unit. Tell us whether the door is glass, wood or metal, and whether it is an exterior or interior door. That helps us bring the right parts.

  2. 2

    We come to the door

    We are 24/7 and fully mobile, so we work at your building rather than asking you to bring anything in. We start by watching the door move through its full swing.

  3. 3

    Inspect the closer, arm and mounting

    We check for fluid leaks, a bent or loose arm, worn mounting screws, a sagging door, a binding hinge, and a misaligned latch or strike. Many closer complaints are really caused by one of these neighbors.

  4. 4

    Adjust or repair first when sensible

    If the closer is sound, we adjust sweep speed, latch speed and, where the model allows, backcheck, then tighten and realign the hardware. A well-tuned closer should swing smoothly and latch every time.

  5. 5

    Replace when repair isn't the right call

    If the unit is leaking, cracked or no longer holds adjustment, we recommend a replacement closer sized and mounted properly for the door. We explain the options before we do the work.

  6. 6

    Test and walk you through it

    We cycle the door repeatedly and confirm it closes fully and latches. We also check that it operates safely for people entering and leaving, and show you what we adjusted.

Need door closer repair 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 the closer can be adjusted or repaired, or must be replaced entirely
  • The type and grade of closer needed, since light-duty and heavy-duty units differ
  • Door size, weight and material, including glass, wood or metal
  • Whether the door frame, hinges, latch or strike also need correcting for the closer to work
  • How many doors on the property need attention in one visit
  • Time of day and urgency, since we are available around the clock

Why San Marino chooses us

  • Fully mobile: we work on your door at your location, and there is no shop to visit
  • Available 24/7, so a door that won't latch doesn't have to wait until morning
  • In business since 1987, with owner David Shar leading the work
  • We look at the whole door, including hinges, latch and alignment, not only the closer
  • We try adjustment or repair first and recommend replacement only when it truly makes sense
  • Locksmith expertise means we think about how the closer affects security, not only comfort

Door Closer Repair across San Marino

San Marino's commercial doors sit mostly along Huntington Drive and the Mission Street corridor, in the area locals call the Mission District. Offices, shops and service businesses there see steady foot traffic, and their entry doors take a lot of cycles. We also work in the Huntington Library district, where institutional and visitor-facing doors need to close quietly and reliably, and we serve the Lacy Park neighborhood, where small offices and community buildings sit close to residential streets.

We serve ZIP code 91108 and the roads that connect it, including Huntington Drive, Sierra Madre Boulevard, San Gabriel Boulevard, Del Mar Avenue and Los Robles Avenue. Because we come to you, it doesn't matter whether your building is near Crowell Public Library, close to El Molino Viejo, or tucked off a quieter side street.

San Marino takes pride in how its properties look and feel, and a slamming or sagging door undermines that. We aim for a quiet, controlled closing action that suits the building. If your door also has older or specialty hardware, tell us when you call so we can plan accordingly. You can reach us any hour at (323) 997-8867.

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 door closer repair page.

Door Closer Repair in San Marino — FAQs

Do you offer door closer repair in San Marino at night or on weekends?
Yes. We are available 24/7 and fully mobile, so you can call (323) 997-8867 at any hour about a door that won't close or latch.
Can a door closer be repaired, or does it always need replacing?
Often it can be adjusted. Slamming, slow closing or failure to latch is frequently a matter of valve settings or loose hardware. If the unit is leaking fluid or cracked, replacement is usually the better choice, and we will tell you which applies.
Why does my door slam shut?
The sweep or latch speed is probably set too fast, or the closer is failing. A worn arm or loose mounting can also cause it. We inspect and correct the cause.
Why won't my door latch all the way?
The closer may lack force at the end of the swing, or the door may be misaligned with the strike. Sagging hinges can also be the culprit. We check the whole door, not only the closer.
Do you come to my building, or do I bring the closer in?
We come to you. Crenshaw Lock Company is mobile only, with no storefront, and we do the work on the door itself.
Can you service several doors in one visit?
Yes. If you have multiple entrances or interior doors that need attention, we can look at them in one visit. Call (323) 997-8867 to describe what you have.
How is the cost determined?
It depends on whether the closer is adjusted, repaired or replaced, the grade of closer, the door's size and material, any related hardware repairs, and how many doors are involved. We explain the options before starting.
Is a leaking door closer a problem?
Yes. Oil leaking from a hydraulic closer means it is losing the fluid that controls the door's movement, and it usually will not hold adjustment. It also can stain floors and the door. Call us and we can assess it.
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