Wood & steel frame
Wrought iron
Farm & ranch
Sliding driveway gates
LiftMaster operatorsFree 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.
Get your free estimateFast, Reliable Gate Repair Across Redwood City
A broken gate in Redwood City rarely waits for a convenient moment. Most repairs we handle here run between $225 and $650, with gate opener replacement typically landing at $450 to $1,100 depending on the motor and whether we can reuse your existing mounting. If you’re in Redwood Heights, Emerald Hills, or the flats near Broadway, call (669) 666-6859 and a live person answers, 24 hours a day. We dispatch background-checked technicians to Redwood City with a trackable arrival time, not a vague four-hour window, and you’ll get a written price before any work starts.
Why Calder Gate Repair San Jose Is Redwood City’s Preferred Gate Repair Company
Redwood City isn’t one housing type. It’s a patchwork of hillside estates, mid-century tracts, and new multi-family builds, and each one stresses a gate differently. Our Gate Repair team knows the difference between a 1960s iron swing gate off Farm Hill Boulevard and a modern aluminum slide gate on a flat Midtown lot. We bring deep multi-brand expertise across nine opener brands, and every technician is background-checked and arrives in uniform with the parts likely needed for your first visit.
Calder Gate Repair operates inside the Relay Home Co. family, founded in 2009. Every job we do in Redwood City carries three written guarantees you’ll never have to ask for: a written price before any work starts, a written guarantee on every repair, and the 365-Day Done Right Promise. If a repair fails within 365 days, Calder returns at no charge. That’s it, in writing, on every invoice.
Customers across Redwood City call us because we answer the phone. Not a voicemail, not a chatbot. A real person who can schedule, update, or troubleshoot on the spot. Nico Alvarez leads our team, and the standard we’ve built reflects his directness: tell the customer what’s wrong, what it costs, and when we’ll be there. Then show up when we said we would.
Styles & brands we work with
Driveway Gate Repair in Redwood City
Driveway gate repair in Redwood City is our most common call, and it usually falls into one of two buckets: a gate that won’t open, or a gate that won’t stay properly aligned. The hillside properties off Edgewood Road and in Emerald Hills tend to have heavier custom iron gates that were hung decades ago, long before modern safety sensors existed. The flatlands near El Camino Real have newer aluminum and steel systems, but they still fail on rollers, hinges, and control boards. Most driveway gate repairs in Redwood City run $225 to $650 before parts, with opener motor replacement at $450 to $1,100 when the existing unit is beyond saving.
Hinge and Post Failures on Hillside Driveways
Steep driveways concentrate stress at the hinge post. When a 400-pound gate swings, every cycle tugs at the post footing, and on a slope that force is multiplied. We regularly see upper hinge posts pulled out of plumb on gates in Redwood Heights, and the repair often means excavating the footing, welding a new steel sleeve into the old post, and re-hanging the gate true before reattaching the operator.
Gate Realignment and Rack Repair
Slide gates on sloped driveways eat rack and pinion gears. The motor has to fight gravity on every cycle, and when the rack teeth strip, the gate jerks, binds, or stalls halfway. We’ll check the full travel, replace the damaged rack section, and set the limit switches correctly so the motor isn’t fighting its own mount. On flat Redwood City lots, this is usually a simple alignment fix. On hills, it’s often a worn gear and a motor that needs recalibration or replacement.
Gate Welding in Redwood City
Gate welding in Redwood City is the realistic answer for older iron and steel gates that newer replacement parts can’t fit. In the hills off Farm Hill Boulevard, it’s common to find ornate iron gates from the 1960s that have never been updated. The original manufacturers are long gone, so replacement hinges, post caps, and striker plates often don’t exist as off-the-shelf parts. Our techs fabricate them on-site: cut, shape, weld, grind, and finish to match the existing iron. Welding work on a Redwood City gate typically runs $180 to $450 per repair area, depending on access and whether we’re reinforcing a post, rebuilding a hinge, or repairing a cracked weld at a stress point.
On-Site Fabrication for Legacy Gates
We recently drove up to a 1963 hillside estate in Emerald Hills where a heavy custom swing gate had torn its upper hinge post out of plumb after decades of coastal fog corrosion. Our tech cut out the rotted post footing, welded a new steel sleeve into the old iron, and re-hung the gate with a modern safety photocell tied into a legacy DoorKing operator. The owner didn’t replace a single original part. That’s what on-site fabrication means here: keeping the gate you have, not selling you a new one.
Rust Repair and Reinforcement
Morning fog and salt air from the Bay accelerate corrosion on any exposed metal, but the effect is worst on older gates that predate powder coating and galvanized hardware. We grind out rust pockets, weld in new steel where the section thickness has thinned, and treat the repair area so it doesn’t become the next failure point. On hillside gates in Redwood City, this is often the difference between another decade of service and a gate that folds at the hinge.
Trusted Brands We Service in Redwood City
We’re factory-familiar with nine major gate opener brands, and in Redwood City we see a lot of FAAC, Linear, and Viking units on older hillside properties, alongside BFT on newer builds. Because we stock common parts for these brands locally, a Redwood City repair doesn’t have to wait on a distributor’s shipping schedule. When your FAAC hydraulic operator or your Viking swing arm acts up, we’ll diagnose the specific fault, quote the repair, and have the right board, capacitor, or limit switch on the truck the first time. No generic “all brands” guesswork.
See the difference
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After
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After
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AfterCommon Gate Repair Problems We See in Redwood City Homes
- Fog-corroded hinge posts on hillside gates. Decades of salt air work into the post footing and the hinge barrel. The gate sags, scrapes the ground, and eventually tears the post loose. We see this constantly in Emerald Hills and Redwood Heights.
- Stripped rack gears on sloped driveways. Slide gates on a grade fight gravity every cycle. When the rack teeth wear or the pinion strips, the gate lurches and stalls. The fix is a new rack section and a properly calibrated motor.
- Obsolete control boards on legacy operators. Older DoorKing, FAAC, and Viking boards fail with no error code and no spare part available from the manufacturer. We source board-level replacements or retrofit a modern controller that works with the existing arm or piston.
- Missing photo eyes on pre-safety-standard gates. Gates hung before UL 325 became the standard often have no entrapment protection. We retrofit photocells and edge sensors onto the original operator so the gate stops and reverses safely, especially important on hillside properties where a gate that closes on a car or a person carries more force.
Pricing for Gate Repair in Redwood City, CA
Here’s what you can expect to pay in Redwood City, and this is in writing before any work starts: basic service calls run $89 to $149, hinge and alignment repairs run $225 to $450, control board replacement runs $300 to $650, and a full opener replacement runs $450 to $1,100 installed. Welding and fabrication work runs $180 to $450 per repair area. The factors that move the number are the weight of the gate, whether we’re on a steep grade, and whether the original parts are still available or we need to fabricate something. You’ll see the price before we touch a tool.
We Also Serve Cities Near Redwood City
Calder Gate Repair San Jose covers Redwood City plus the surrounding Peninsula communities. If you’re in Atherton, Menlo Park, Stanford, or Portola Valley, the same team that knows Gate Repair in Redwood City handles your gate with the same written pricing and 365-Day Done Right Promise. Call (669) 666-6859 for a free estimate anywhere in the area.
Serving Redwood City, CA - Our Local Coverage Area
We’re based in the Redwood City 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 Redwood City
In most cases we can repair it, and we’ll tell you honestly when replacement is the cheaper answer. Original 1960s iron gates in Redwood City hold up well when the hinge posts and welds are sound. We fabricate replacement parts on-site because the original manufacturers are long gone, and we’ll retrofit the gate with a modern safety system without touching the original iron. Call (669) 666-6859 for a written assessment.
Fog and salt air from the Bay accelerate corrosion on exposed metal components, particularly limit switches, capacitor terminals, and hinge pins. Over time, this corrosion seizes moving parts and causes false fault readings. The fix is usually a new limit switch or a cleaned and sealed electrical connection. We recommend an annual inspection for hillside gates near the fog line.
No, and it’s a genuine safety hazard. UL 325 entrapment protection has been the national standard for decades, and gates without photocells or edge sensors can close on a car, a pet, or a person. We retrofit photo eyes and safety edges onto legacy operators regularly in Redwood City, often without replacing the motor or arm. This is a few hundred dollars well spent, especially on hillside properties where a gate carries more closing force.
Because the motor is fighting gravity on every cycle. A slide gate on a grade works much harder than one on a flat lot, and if the rack and pinion aren’t aligned or the motor is undersized, the gears strip prematurely. We replace the rack section, realign the pinion, and confirm the motor is rated for the gate’s weight and the slope. Call (669) 666-6859 and we’ll diagnose it on-site.
Yes, in most cases we don’t remove the gate. We brace the gate in place, cut out the damaged section, weld in new steel, and re-hang the gate true without lifting it off its hinges. This approach is faster and cheaper because we don’t need a crane or a second crew. The finished weld gets ground smooth and treated to resist the same fog corrosion that caused the original failure.
Written by Nico Alvarez, Owner at Calder Gate Repair San Jose, serving Redwood City and the surrounding Peninsula.