Free on-site gate assessment - hinges, posts, and your LiftMaster or Nice gate operator checked before anything is quoted
The assessment is free and the quote is the invoice.
Fast, Reliable Electric Gate Repair Across San Bruno
Electric gate repair in San Bruno typically runs $180 – $480 for most opener and sensor faults, and we can usually have a technician at your property same-day when it’s an urgent failure. You’re dealing with a gate that won’t open, reverses for no reason, or makes a grinding noise every time the kids leave for school. That’s the call we answer all day, every day. Calder Gate Repair knows San Bruno’s neighborhoods, its fog patterns, and its soil, and we send background-checked, uniformed technicians with a live arrival time you can track on your phone. Call (903) 417-0793 and a real person answers, 24/7, not a bot.

Why Calder Gate Repair Is San Bruno’s Preferred Electric Gate Repair Company
San Bruno homeowners call us because we show up when we say we will and the price we quote on the phone is the price on the invoice. No add-ons at the door. Every repair carries our 365-Day Done Right Promise: if the repair fails within a year, we come back at no charge. That promise is in writing on every job. It’s not a handshake.
We’re part of the Relay Home Co. family, established in 2009, and each location is independently owned and operated under The Relay Visibility Guarantee. That means you get a live, trackable arrival time, before-and-after photos of the work, and a digital invoice you pay from a link. No four-hour windows. No “somebody will call you back.”
For San Bruno specifically, our technicians know what the San Andreas Fault does to gate posts and tracks. We schedule realistic arrival windows for Rollingwood, Crestmoor, and Portola Highlands because we actually drive those hills. We stock common Linear, Viking, and DoorKing parts locally so most repairs don’t wait on shipping.
Led by Nico Alvarez, our team trains on nine opener brands, including LiftMaster, FAAC, BFT, Ghost Controls, and Mighty Mule. That breadth matters when a homeowner has a 15-year-old Viking control board and no idea where to start. We do.
Commercial Gate Operator in San Bruno
A Commercial Gate Operator in San Bruno handles the heavy swing or slide gates you see at apartment complexes, storage facilities, and small business lots along El Camino Real and San Mateo Avenue. These operators cycle hundreds of times a day, which means the motor, capacitor, and limit switches wear out far faster than residential units. A commercial gate that won’t open isn’t just inconvenient; it blocks tenants, delivery trucks, and emergency access.
Typical commercial gate operator repair in San Bruno runs $350 – $900 depending on whether the issue is the motor, the control board, or a failed loop detector. Full operator replacement on a commercial slide gate often lands between $1,800 and $3,400 including the new unit and labor. We quote the full job in writing before any work starts.
Loop Detector and Safety Edge Testing
Most commercial gate failures we trace in San Bruno come back to loop detectors that have shorted from water intrusion or safety edges that no longer register resistance. Both trigger fail-safe behavior, meaning the gate stays open or refuses to close. We test both against manufacturer spec and UL 325 reversal requirements.
Operator Motor and Capacitor Replacement
When a commercial motor burns out, the capacitor usually fails first. We diagnose which component failed, not just swap the whole unit. That saves San Bruno property managers hundreds. Replacement motors for DoorKing and Viking operators are stocked locally, so most commercial jobs finish within one or two business days.
Automatic Gate Repair in San Bruno
Automatic Gate Repair in San Bruno covers the full range of residential slide and swing gate openers, from Mighty Mule units on Portola Highlands driveways to Linear and Ghost Controls systems in the Mills Park and Huntington area. The most common residential failures are gear stripping in the opener, control board shorts after rain, and photocell misalignment from minor ground shifts. A gate that reverses for no reason or beeps constantly usually points to one of these three.
Residential automatic gate repair in San Bruno typically costs $180 – $480 for sensor, limit switch, or remote pairing work. Control board replacement on a Linear or Viking opener runs $250 – $550 including labor. If the entire opener needs replacement, budget $850 – $1,700 for a new unit and installation. Every quote is written down and agreed to before we touch a bolt.

Safety Photocell Realignment
San Bruno’s clay soils settle and shift, especially after winter rains. That knocks photocells out of alignment, and the gate reverses or refuses to close. We re-align the beam, verify the interruption response, and re-level the mounting brackets so the fix holds through the next wet season.
Control Board Diagnostics and Replacement
Fog and coastal moisture work their way into control boards over time. Corroded terminals cause intermittent failures that look like random glitches but are actually traceable shorts. We open the housing, clean and test the board, and replace it with a factory unit when the corrosion has gone too far. No guessing.
Trusted Brands We Service in San Bruno
Calder Gate Repair is factory-familiar with the openers San Bruno homes actually use. We service and stock parts for Linear, Viking, Ghost Controls, and DoorKing, along with LiftMaster, FAAC, BFT, Elite, and Mighty Mule. That coverage means we rarely have to special-order a board or gear kit. For Electric Gate Repair jobs across San Bruno, we keep common sensors, remote receivers, and control boards in local inventory. Most repairs finish on the first visit. You tell us the brand and the symptom, and we bring the right parts the first time.
Common Electric Gate Repair Problems We See in San Bruno Homes
- Sagging swing gates from post settling: San Bruno’s expansive clay soils plus seismic activity shift the hinge posts. The gate drops, scrapes the pavement, and the opener motor burns out trying to move it. We reset the post, re-level the gate, and re-tension the chain or belt so the opener isn’t fighting a losing battle.
- Loop detector failures after winter rain: Heavy fog and rain seep into driveway loop detectors, especially on properties with poor drainage. The detector shorts, and the gate either won’t open for arriving cars or won’t close after they pass. We seal and replace the loop and reroute drainage where it’s causing repeat failures.
- Safety photocell misalignment from ground shifts: Even a quarter-inch of post movement knocks the photo eye beam out of line. The gate reverses unexpectedly or refuses to close at all. We realign the beam, secure the mounting, and test the reversal system to meet UL 325 standards before we leave.
- Remote and keypad signal loss near SFO flight paths: San Bruno sits under SFO’s approach corridor, and some wireless interferences plus hilly terrain weaken opener remotes. We diagnose whether it’s a failing receiver, a bad antenna placement, or a worn keypad and fix the actual cause instead of re-pairing remotes that will drop again.
Pricing for Electric Gate Repair in San Bruno, CA
Here’s what San Bruno homeowners can expect to pay. A basic service call and diagnostic runs $89 – $139, which is waived if we complete the repair. Remote control repair or replacement runs $60 – $180. Keypad repair or replacement runs $120 – $260. Safety sensor or photocell repair runs $140 – $280. Gate motor repair runs $220 – $650 depending on gear wear and brand. Control board replacement runs $250 – $550. A full automatic gate opener replacement, including the new unit and labor, typically runs $850 – $1,700. Every job gets a written price before work starts, and that number doesn’t move. Call (903) 417-0793 for a free estimate.
We Also Serve Cities Near San Bruno
Calder Gate Repair handles Electric Gate Repair in San Bruno and the surrounding Peninsula communities. We regularly dispatch to Millbrae, South San Francisco, Pacifica, and Brisbane. Same response standards, same written pricing, same 365-Day Done Right Promise.
Serving San Bruno, CA - Our Local Coverage Area
We’re based in the San Bruno area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Electric Gate Repair in San Bruno
In San Bruno, reversing gates usually trace to a misaligned safety photocell, a failing loop detector, or post movement from clay soil shifting after rain. The opener thinks something is in the path, so it reverses as a safety measure. We find the specific cause and fix it, then test the full reversal cycle before we leave. Call (903) 417-0793 to schedule a diagnostic, and we’ll apply the visit fee toward the repair.
Once a year is the honest answer for San Bruno. This city sits on the San Andreas Fault, and our clay soils expand and contract with the seasons. Annual service catches post settling, chain stretch, and sensor drift before they kill the opener motor. We also clean and re-seal control board housings to protect against fog corrosion. That yearly visit costs far less than a surprise motor replacement at 7 a.m. on a Monday.
Yes. Calder Gate Repair technicians train on nine brands, including LiftMaster and FAAC. We stock common boards, gears, and sensors for both, so most San Bruno repairs finish same-day. If a part needs ordering, we tell you the exact arrival date before you pay anything. Written price first, always.
We reset the hinge post by digging out and re-pouring the footing or adding a steel post brace, then re-level the gate and re-tension the chain or belt. In San Bruno, the footing usually shifted due to seismic movement or clay expansion, so simply tightening bolts won’t hold. We recently serviced a LiftMaster slide gate operator in the Crestmoor neighborhood that had been sticking and reversing randomly. After inspecting the rack and pinion, we found the post footing had shifted slightly, likely from soil movement during the winter rains, causing the gate to bind. We re-set the footing, realigned the track, and tested the safety photocell to ensure UL 325 compliance; the gate now runs smoothly and the homeowner has a reliable entry again. The job took one day.
Yes, we install and service solar gate openers from Ghost Controls and Mighty Mule for San Bruno properties without a nearby power run. Solar works well here when the panel gets clear southern exposure, though foggy stretches in July and August mean we size the battery bank conservatively. A solar opener installation typically runs $1,100 – $2,000 including the panel, battery, opener, and mounts. Free estimate, written price, no pressure.
Call Calder Gate Repair for Electric Gate Repair in San Bruno
When your gate won’t open, you need a real person and a real arrival time. Calder Gate Repair gives you both. We serve every San Bruno neighborhood, from Crestmoor to Portola Highlands to the flats near Tanforan, with written pricing, background-checked technicians, and a 365-Day Done Right Promise on every repair. Call (903) 417-0793 now for a free estimate. A live person answers, day or night.
Written by Nico Alvarez, Owner at Calder Gate Repair, part of the Relay Home Co. family serving San Bruno since 2009.





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