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 Gate Repair Across South San Francisco
A gate that won’t open, sags into the driveway, or stalls halfway through its cycle is more than frustrating in South San Francisco. It leaves your property exposed and your schedule hostage. Most gate repairs in South San Francisco run $180 to $520 for common operator, hinge, and alignment work, and we can usually have a technician to your home within 24 to 48 hours, depending on parts. Call Calder Gate Repair at (903) 417-0793 and you’ll talk to a live person who can book the visit and tell you what to expect before anyone rolls a truck.

We know this city’s gates. Not just the brands that hang on the posts, but the particular way South San Francisco driveways, weather, and soil work against them. More on that below, because it changes how a repair should actually be done.
Key Takeaways:
- Gate repair in South San Francisco typically runs $180 to $520 before specialty parts.
- Every job gets a written price before work starts, and a written 365-Day Done Right Promise.
- We service LiftMaster, FAAC, BFT, Linear, Viking, Ghost Controls, DoorKing, Elite, and Mighty Mule.
- Sloped driveways and marine soil cause specific gate failures here that generic repair shops miss.
Why Calder Gate Repair Is South San Francisco’s Preferred Gate Repair Company
Calder Gate Repair is the dedicated gate repair specialist inside the Relay Home Co. family, which was established in 2009. We’re independently owned and operated, and we run every South San Francisco job on the Relay Standard: a live arrival time you can track, a written price before anything is touched, and a digital invoice you pay from a link. No four-hour windows. No phone tag.
Nico Alvarez leads our team. When you call, a real human answers, 24 hours a day, 7 days a week. That matters in South San Francisco, where a gate stuck open at 8 p.m. on El Camino Real or up in the Westborough hills needs a same-evening answer, not a callback tomorrow.
We’ve earned our reputation in South San Francisco by fixing what others miss. Many local gates fail because of the post, not the panel. A technician who only greases hinges will be back in six months. We correct the actual cause and back every repair with our 365-Day Done Right Promise: if the repair fails within 365 days, Calder returns at no charge. It’s written on every invoice.
You’ll also see background-checked, uniformed technicians who arrive when the tracking link says they will. And before anything is done, you’ll have a firm price in writing.
Wrought Iron Gate Repair in South San Francisco
Wrought iron gate repair in South San Francisco usually means more than re-welding a loose picket. Our team works on pedestrian gates and driveway gates throughout the city, from the older homes around Grand Avenue to newer builds in the Sunshine Gardens area, and the first thing we check at every iron gate is the post footing and the hinge side. Salt air off the bay is unkind to iron. It gets into the hinge barrels, eats the weld points, and rusts out the bottom rail where moisture sits against the driveway. You can see the flaking paint before you feel the sag.
Hinge and Post Work
On South San Francisco’s sloped lots, the weight of an iron gate shifts forward as the post moves. Stiff hinges transfer that load into the pickets and the lock. We replace worn hinge pins, reset or reinforce posts, and align the gate so the latch strikes true without lifting or dragging.
Rust and Weld Repair
We grind out rust-eaten sections, weld in matching material where the structure needs it, and treat the repair so it doesn’t bloom again in three months. This is where the marine air along the 101 corridor matters. A weld that holds fine in San Bruno rusts differently in South San Francisco when the gate faces west toward the bay. A typical wrought iron repair here runs $220 to $520 depending on the condition of the post and how much of the gate needs welding.
Metal Gate Repair in South San Francisco
Metal gate repair throughout South San Francisco covers the broader family of steel, aluminum, and tubular-bar gates that most local driveways actually have. Aluminum is lighter and resists rust, but it can crack at the weld points where the diagonal brace meets the frame. Steel is stronger but heavier, and on a sloped driveway in the Terrabay or Paradise Valley sections, that weight works against an undersized opener every single day.
Realigning a Dragging or Stalling Gate
A metal gate that scrapes the driveway or stalls halfway through its travel is usually fighting the slope. The post has moved; the gate’s geometry has changed. We get the gate off its back, reset the post or the hinge points, and retest the full travel before we call the job done. Drop-off from level on a South San Francisco driveway is common enough that we check it on every metal gate repair, even when the complaint is “the opener quit.”

Opener and Track Adjustments
When the operator was sized for flat ground and the gate is now binding on a slope, the board and motor take the punishment. Metal gate repairs that involve the opener and running gear here typically run $280 to $520. We quote the whole repair, including the alignment work, before we start.
Trusted Brands We Service in South San Francisco
Our techs are factory-familiar with nine major gate opener brands: LiftMaster, FAAC, BFT, Linear, Viking, Ghost Controls, DoorKing, Elite, and Mighty Mule. That covers virtually every gate opener a South San Francisco homeowner is likely to own. We keep a rolling stock of common parts in our Bay Area vehicles, which means faster turnaround for FAAC and Linear hydraulic units and BFT slide operators in the city. You don’t need to wait a week for a control board to ship from a warehouse.
Common Gate Repair Problems We See in South San Francisco Homes
- Post footing movement: South San Francisco sits on marine-influenced soil, and driveways on the city’s slopes settle. When the post tilts even a half-inch, the gate starts to bind, drag, or stall. We correct the footing, not just the panel, because that’s the actual fix.
- Salt air and marine moisture: Homes west of 101 catch steady bay air. Hinges seize, steel rusts at the bottom rail, and electrical contacts in the operator corrode. This is a South San Francisco-specific wear pattern we see on iron and metal gates alike.
- Undersized or poorly grounded power runs: Many older South San Francisco properties have garage and driveway circuits that were never meant to feed a gate opener. The boards constantly fault, reset, or burn out. We check the run and the ground before replacing a board that would just fail again.
- Misaligned rack and pinion on slide gates: On sloped driveways, a shifted post moves the rack out of line with the pinion gear. The gate jams mid-travel and the motor strains until something fails. This needs realignment, not a new motor.
On a sloped driveway off Grand Avenue, our tech found a LiftMaster slide gate binding because the rack and pinion was misaligned after the post footing shifted. We corrected the footing, realigned the rack, and tested the safety photocell before leaving. The gate now runs smoothly without the intermittent stall the homeowner had been hearing for weeks.
Pricing for Gate Repair in South San Francisco, CA
We believe in giving the number before we turn a bolt. Every South San Francisco repair comes with a written quote, and the invoice matches the quote unless you approve a change in advance. Most hinge replacements run $180 to $300. Gate realignment jobs run $220 to $380. Wrought iron and metal gate repairs with welding, rust treatment, and post work run $220 to $520. Slide gate rack and pinion alignment falls in the $280 to $420 range. Parts like control boards and hydraulic pumps are quoted separately, with the exact price and part number on your estimate. Call (903) 417-0793 for a free estimate, and you’ll get a specific range for your gate before we schedule.
We Also Serve Cities Near South San Francisco
Calder Gate Repair serves Gate Repair in South San Francisco along with Brisbane, Daly City, San Bruno, and Millbrae. If your gate is between two service areas, call us and we’ll route the right technician to you. Our Gate Repair team covers the whole northern Peninsula with the same written-price guarantee.
Serving South San Francisco, CA - Our Local Coverage Area
We’re based in the South San Francisco 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 Gate Repair in South San Francisco
Sagging that returns after tightening almost always means the post itself has moved. On South San Francisco’s sloped, marine-soil lots, gate posts settle out of level, and no hinge adjustment can fix the geometry. We reset or reinforce the post, then realign the gate and hinges. The fix holds because we correct the footing, not just the hardware. Call (903) 417-0793 and we’ll check the post first.
Yes. Automatic gate systems are required to have working safety sensors, often photoeyes, especially on any gate with an operator. In South San Francisco’s foggy marine air, dirty or misaligned photoeyes are a common reason gates refuse to close or reverse for no visible reason. We clean, align, and test the sensors on every automatic gate visit. If your gate stops mid-cycle near the bottom, call us for an inspection.
Most gate repairs in South San Francisco can be scheduled within 24 to 48 hours. Emergency calls, like a gate stuck open or an operator smoking, are triaged immediately when you call (903) 417-0793. A live person answers around the clock and can get a technician dispatched from the Bay Area office quickly.
We repair LiftMaster, FAAC, BFT, Linear, Viking, Ghost Controls, DoorKing, Elite, and Mighty Mule operators. That covers the common slide and swing operators in South San Francisco’s residential and small commercial gates. If you’re not sure what brand you have, our tech can identify it on arrival.
Yes, though South San Francisco’s fog means solar panels run under their rated output for good parts of the year. We service solar opener systems, check panel output, and often recommend a panel relocation or a supplemental battery. The key is matching the panel to the actual sun hours near the bay, not the Southern California rating on the box. Call (903) 417-0793 for a free look.
Contact Calder Gate Repair in South San Francisco
If your gate is sagging, stalling, rusting, or just stopped working altogether, call Calder Gate Repair at (903) 417-0793 for a free estimate. We serve all of South San Francisco, from downtown by Grand Avenue to the residential streets up toward Sign Hill, with written pricing, background-checked technicians, and the 365-Day Done Right Promise on every repair. Speak with a live person, get your written quote, and get your gate working right.
Written by Nico Alvarez, Owner at Calder Gate Repair, serving South San Francisco and the surrounding Peninsula.





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