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 Motor & Opener Across Union City
Gate motor and opener repair in Union City usually costs between $195 and $480 for most residential service calls, and we can typically have someone at your door the same day you call. The bigger question for Union City homeowners isn’t whether we can fix it, it’s whether the repair will hold up to the salt air coming off the Don Edwards San Francisco Bay National Wildlife Refuge. That’s where we spend most of our time: repairing the damage other shops miss, then spec’ing parts that won’t corrode again in two years. Call us at (877) 610-2993 and a live person answers, day or night.
Hal Gatewood started this shop in 2001, and his name is on every invoice. When you call about a dead gate motor in the Decoto neighborhood or a slide operator grinding on Dyer Street, you’re talking to people who know exactly what those locations do to gate hardware. We don’t guess from a call center. We’ve pulled enough corroded gearboxes out of Union City gates to know what fails first, what fails next, and what actually holds up.
Why Gatewood Fence & Gate Is Union City’s Preferred Gate Motor & Opener Company
Most of our Union City work comes from homeowners who already paid someone else once. They call us after a national outfit swapped a board, said it was fixed, and disappeared when the same failure came back three months later. Hal’s approach is different: he fixes the gate in your driveway, welds on site when the post or bracket needs it, and puts the 90-Day Done Right Promise in writing on every job. If it’s not done right, one call brings him back. No runaround, no fine print.
Our reputation in Union City is built on showing up when we say we will. Homeowners near Alvarado, Decoto, and the neighborhoods west of Union City Blvd know that the person who answers the phone at 2 a.m. is the same person who owns the company. Not a dispatch queue. Not a voicemail. A real person who knows gates and knows this city. That’s the oldest accountability there is: the name is on the shop, and the shop is down the road.
We’re certified to service nine major gate brands, including Viking, Ghost Controls, and DoorKing. For Union City specifically, that matters because the salt-laden marine air along the Dumbarton Bridge approach means we’re constantly matching replacement parts to corrosion profiles, not just swapping like-for-like. A gearset that worked fine for eight years in Fremont’s hillside neighborhoods might have lasted five in Union City unless it’s spec’d differently. We know the difference.
Our Gate Motor & Opener Services in Union City
Every service below starts the same way: we look at the whole gate, not just the motor. A gate sags in the hinge post, not in the middle, and that’s where we start. Fix the panel without the post and you’ll fix it twice.
Motor Installation
New motor installations in Union City are priced and planned differently than they would be in a drier market. We recommend stainless steel mounting hardware, sealed wire connections, and marine-grade grease on every residential install west of the 680 corridor. For a standard residential swing gate operator on a 1980s Decoto home, expect $850 to $1,450 depending on gate weight and operator type. A slide motor for a commercial property along Whipple Road runs $1,200 to $2,600, including rack and pinion alignment and safety edge integration. Your price is quoted and agreed before any work starts.

Motor Repair
Most motor repair calls in Union City are corrosion-driven, not impact-driven. The typical residential repair runs $195 to $480, covering new circuit boards, capacitor failures, stripped limit switches, or corroded internal gears. On commercial slide gates near Dyer Street, where daily cycle counts are high and salt air is constant, repairs often involve gearbox rebuilds or limit switch rewiring. We stock common parts for Union City jobs, so most residential repairs happen same-visit.

Linear Motor
Linear arm operators are common on residential swing gates in Union City’s 1970s-1990s tract neighborhoods. The direct-drive arm design is simpler than a rack-and-pinion slide system, but the exposed shafts and housing seals still corrode faster here than inland. We service Linear operators weekly across Union City, and the most common failure we see is a seized drive shaft from salt intrusion through dried-out seals. A rebuild typically runs $280 to $520 in Union City.

Slide Motor
Union City’s industrial corridor along Dyer Street and Whipple Road is slide gate country. Heavy chain-link and steel slide gates cycle dozens or hundreds of times daily, and the operators take a beating from both use and the bay air. We pulled a Viking slide gate operator off a warehouse gate along Dyer Street after the drive gear stripped completely. The owner said the gate cycled 300 times a day and was installed just six years ago. The rack and pinion teeth were almost gone, accelerated by salt air from the nearby Don Edwards refuge. Our crew swapped in a new gearset, packed the housing with marine-grade grease, and upgraded the hinge post hardware to stainless so the operator wouldn’t be working against a sagging gate. That’s the difference between fixing the symptom and fixing the cause.

What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Union City
We’re certified on nine major gate operator brands, and in Union City we lean heavily on Viking, Ghost Controls, and DoorKing for the residential and light-commercial work we see most. Each brand has strengths in this environment: Ghost Controls residential swing operators hold up well when you seal the control board connections properly, Viking builds heavy slide operators we can rebuild rather than replace, and DoorKing’s commercial gear is common on the Whipple Road warehouses we service. We stock common parts and boards for these brands for Union City customers, which means a failed board on a LiftMaster swing gate in Decoto doesn’t have to wait a week for shipping. Call (877) 610-2993 and we’ll tell you straight whether we can fix it today.
Common Gate Motor & Opener Problems We See in Union City Homes
- Gearbox seizure from salt-laden marine air. This is the big one. On high-cycle commercial slide gates near the Dumbarton Bridge marshlands, we see operator gearboxes seize in 5-7 years. The same unit in Livermore typically runs 10-12 years. Union City’s position directly adjacent to the Don Edwards refuge means airborne salt content is measurably higher than just a few miles east.
- Hinge post corrosion causing motor overload. The 1970s-1990s tract homes in Decoto and Alvarado came with basic tubular steel or chain-link side-yard gates. After 30-50 years of bay-influenced humidity, those hinge posts corrode and shift. The sag overloads and burns out new motors within months. We don’t install a new motor on a sagging post. We fix the post first.
- Safety photocell and loop detector failures. On Dyer Street industrial properties, exposed conduit and wiring corrode early. We see nuisance faults and failed safety edges constantly, triggered by corroded connections rather than mechanical damage. It’s often a wiring issue, not a controller issue.
- Stripped drive gears on slide operators. The rack and pinion teeth on commercial slide gates wear down fast when salt air and high daily cycle counts combine. We pulled one off Dyer Street where the teeth were nearly gone at six years. Regular inspection would have caught it at year four, before the gate became inoperable.
Pricing for Gate Motor & Opener in Union City, CA
Here’s what you can expect to pay in Union City’s market. A residential swing gate motor repair runs $195 to $480 depending on whether we’re replacing a board, a capacitor, or rebuilding a drive assembly. A full residential motor installation runs $850 to $1,450. Slide motor repairs on commercial gates run $300 to $800 for most gearbox and limit switch work, and a full slide motor installation typically falls between $1,200 and $2,600. Battery backup systems for residential gates add $350 to $700 to an installation, depending on operator type.
Two things affect Union City pricing more than anything: the condition of the hinge post or rack, and whether the old install used stainless or zinc-plated hardware. If we have to weld a new post base or replace corroded mounting brackets, that’s the difference between a $250 repair and a $650 repair. You’ll always know before we start. We quote the price up front, we agree on it in writing, and we don’t show up with a different number. Union City homeowners get a free estimate, and we offer a free second opinion on any written estimate from another company. That’s the Hal Gatewood way: show me the gate closing on its own and I’ll show you where it’s failing.
We Also Serve Cities Near Union City
Our Gate Motor & Opener team serves Union City and the surrounding East Bay communities regularly. If you’re in Newark, Fremont, Fairview, or Hayward, we handle gate motor and opener work there too, with the same live-person phone support and the same 90-Day Done Right Promise. This page focuses on Gate Motor & Opener in Union City, but our service area covers the whole corridor.
Serving Union City, CA - Our Local Coverage Area
We’re based in the Union 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 - Gate Motor & Opener in Union City
It’s the salt air, plain and simple. Union City sits at the western edge of the East Bay flatlands, right up against the Don Edwards San Francisco Bay National Wildlife Refuge and the Dumbarton Bridge marshlands. Humidity levels and airborne salt content are higher here than a few miles inland, and that salt works its way into gearbox seals, limit switch housings, and exposed drive gears. On a Dyer Street gate cycling 200-300 times a day, the combination of constant motion and corrosive air strips gears years faster than a Livermore gate that stays drier. The fix isn’t a different operator, it’s different specs: marine-grade grease, sealed or stainless housings, and a stricter inspection schedule. Call (877) 610-2993 if your Dyer Street gate is grinding, and we’ll tell you honestly whether it’s rebuildable or past saving.
No, and we won’t pretend otherwise. A LiftMaster operator on a 1980s Decoto gate is working against 35-45 years of bay humidity that’s already eaten into the hinge post. If we install a new motor on a post that’s shifted or corroded, the motor burns out in months because it’s fighting the sag. We repair the hinge post first, welding on site when we can, and then install the operator. That’s why our 90-Day Done Right Promise means something in Union City: we’d rather do the post work and have the motor last ten years than skip it and see you again in six months. Estimates are free, so call (877) 610-2993 and we’ll tell you what the post actually needs.
For residential swing gates in Union City, Ghost Controls builds operators with sealed control boards and decent housing gaskets that hold up better than most in salt-exposed environments. Viking’s heavier-duty slide operators are also common here, but they need marine-grade grease and regular gear inspection to reach their full lifespan near the marsh edge. The brand matters less than the installation spec. We use stainless mounting hardware and sealed wire connections on every Union City install, regardless of brand, because that’s what actually determines whether the unit lasts five years or fifteen. Call (877) 610-2993 for a straight recommendation based on your gate and your exposure.
Yes. California code requires entrapment protection on any automated gate, including the small side-yard gates common on Union City’s 1970s-1990s tract homes. That means photo eyes, safety edges, or an inherent reverse mechanism depending on the operator type. In Union City’s salt air, these safety devices fail early from corrosion on exposed wiring and sensors, which triggers nuisance faults and sometimes disables the gate entirely. If your gate is refusing to close or keeps reversing for no reason, it’s often a corroded photo eye wiring connection, not a bad board. We test the entire safety circuit on every repair call, because a gate that opens and closes without entrapment protection is a liability, not a convenience.
Every six months, minimum. The Whipple Road industrial corridor has the same salt-air exposure as Dyer Street, plus high daily cycle counts on warehouses and logistics facilities. Rack and pinion teeth wear faster here than almost anywhere else in the East Bay. At 200-300 cycles a day, a gearset that would last a decade inland is often down to 30-40% tooth depth at year five. We recommend a twice-yearly inspection that includes gear tooth measurement, gearbox grease condition, limit switch function, and safety edge testing. It’s cheaper than an emergency replacement and a closed gate during business hours. Call (877) 610-2993 to schedule a Whipple Road inspection, and we’ll give you a written quote before any work starts.
If your gate motor is dead, grinding, or refusing to close in Union City, call (877) 610-2993. Hal Gatewood or one of his crew will answer, give you a straight answer about what’s wrong, and quote a price that won’t change when we show up. Free estimates. Free second opinions. Seniors and veterans always get 10% off. That’s the deal, and it’s written on every invoice.
Written by Hal Gatewood, Owner at Gatewood Fence & Gate, serving Union City with gate motor and opener repair, installation, and corrosion-resistant upgrades.





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