San Mateo County, California
Commercial Door Repair & Service in San Mateo County, CA
Guardian Door LLC provides repair of commercial doors, frames, hardware, and rolling and sectional doors for property managers, facility teams, retail, warehouse, and healthcare buildings in San Mateo County. Tell us what the door is doing and we’ll confirm availability and the next step.
- Licensed & insured
- Fast response
- 5.0 on Google
California CSLB #1025448
Verify on the CSLB siteFully insured
Certificate of insurance on request
Commercial & industrial only
No residential garage doors
Based in Sacramento
Northern California service area
Your Commercial Door Repair Team in San Mateo County
Guardian Door LLC provides repair of commercial doors, frames, hardware, and rolling and sectional doors for the listed cities in San Mateo County. San Mateo County coverage includes 11 communities. The closest to our Sacramento base is Daly City; the farthest is Half Moon Bay, about 92 miles out. The complete breakdown is in our commercial door repair guide.
- Panic and exit hardware repair
- Frames knocked out of plumb
- Doors that drag, won’t latch, or won’t lock
- Broken springs and cables on rolling and sectional doors
- Failed closers, hinges, pivots, and thresholds
- Curtains off their guides after vehicle impact
Commercial door calls we handle in San Mateo County
- Usually the first sign is a symptom: a door that drags on the threshold, a closer that slams or won’t latch, a leaf that has dropped out of square, a spring that let go, or a rolling curtain that jumped its guides.
- We inspect the whole assembly at the opening under real operating conditions, because a closer that keeps failing is often telling you the frame moved.
- We don’t diagnose remotely — photos help us prepare, but the call is made at the door.
Doors and hardware we maintain and repair
- Hollow metal doors and frames, aluminum storefront entrances, automatic doors, rolling steel and sheet doors, sectional overhead doors, and dock doors — plus the closers, hinges, pivots, exit devices, locks, and thresholds on them.
- We are commercial and industrial only.
- We do not service residential garage doors.
Requirements that apply to your opening
- Requirements for a repaired door depend on the specific opening — its fire rating, egress role, accessibility function, and the occupancy of the building.
- They are set by the building and fire authority with jurisdiction over your address, which in San Mateo County can be a city department or the county, depending on where the property sits.
- We verify what applies to your opening before recommending work, and we tell you when a component repair is not the same as a full compliance inspection of the assembly.
Our 5-Step Commercial Door Repair Process
- In San Mateo County, our work follows 5 service-specific steps, from on-site diagnosis through operation verified.
- The detailed process below explains what each stage covers so you know what to expect before requesting a visit.
Recent Commercial Door Repair Projects
Photos from Guardian Door job sites across Northern California. Explore examples of the work we offer in San Mateo County, CA. Project locations are labeled where available.
How Commercial Door Repair Works in San Mateo County, CA
- 1
On-site diagnosis
A technician inspects the door, frame, springs, tracks or guides, hardware, and operator under real operating conditions — not just the part that was reported.
- 2
Repair vs. replace call
You get a straight answer on whether the door is worth repairing, with pricing for both paths before any work starts.
- 3
Repair performed
Most repairs — springs, cables, guides, tracks, closers, hinges, pivots, thresholds, locks, panic hardware, alignment — are completed on the first visit from truck stock.
- 4
Parts ordered when needed
For obsolete or specialty components we source the correct part and schedule a return visit, securing the opening in the meantime.
- 5
Operation verified
The door is cycled, latched, and checked for safe operation, proper closing and latching, and code-required egress before we leave.
Commercial Door Repair in San Mateo County, CA — FAQs
Can you send a technician to San Mateo County for commercial door repair?
Yes. San Mateo County is inside our Northern California service area, and we dispatch to the listed cities in San Mateo County from our Sacramento base. Scheduling depends on the job, so send the address and the problem and we’ll confirm availability.
Should I repair or replace a commercial door?
Repair usually wins when the door and frame are sound and the problem is hardware, springs, alignment, or a closer. Replacement makes more sense when the frame is out of square, the curtain or slab is badly damaged, or the door has been repaired repeatedly. We price both so you can decide with real numbers.
Do you work with property managers and facility teams?
Yes — much of our work is ongoing service for property managers, retail centers, industrial facilities, and healthcare buildings, including scheduled preventive maintenance across multiple sites with consolidated invoicing.
Are you licensed and insured?
Guardian Door LLC is a licensed California contractor, CSLB #1025448, and carries full liability coverage. We can provide a certificate of insurance for your building requirements.
What should I have ready before the visit?
Building address and the door's location on site; What the door is doing — won't open, won't close, dragging, off track, noisy; Whether the opening is currently secure; Photos of the door and hardware if you have them; Access hours and any on-site contact requirements.
What parts of San Mateo County do you serve?
We currently cover Burlingame, Daly City, Foster City, Half Moon Bay, Menlo Park, Millbrae, Pacifica, Redwood City, San Bruno, San Mateo, and South San Francisco in San Mateo County.
Related guides
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Other Services in San Mateo County
- Operator & Automation Repair in San Mateo County, CA
- Preventative Maintenance in San Mateo County, CA
- Roll-Up Sheet Doors in San Mateo County, CA
- Rolling Steel Doors in San Mateo County, CA
Local service
Cities we serve in San Mateo County
- San Mateo, CA
- Redwood City, CA
- Daly City, CA
- South San Francisco, CA
- San Bruno, CA
- Millbrae, CA
- Burlingame, CA
- Foster City, CA
- Pacifica, CA
- Half Moon Bay, CA
- Menlo Park, CA