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 Installation Across Union City
A new gate installation in Union City typically runs $2,400 to $7,800 for a complete driveway swing gate with operator, depending on the steel gauge, automation brand, and whether your existing post footings go deep enough to survive the Diablo clay under the flatlands. We schedule most Union City installations within 5 to 10 business days after the site measure, and every job starts with a written price handed to you before any tool touches the ground. Call (928) 260-0864 and a live person answers, 24 hours a day. We have worked the Decoto streets, the Alvarado district, and the newer HOA tracts near Union Landing, so we know what this soil and this salt air do to gate hardware before the first hole gets dug.
Why Vance Gate Repair Is Union City’s Preferred Gate Installation Company
Union City is a specific place to build a gate. The flatland neighborhoods from Decoto to the Alvarado district sit on expansive Diablo clay that heaves every winter and shrinks every summer. The marine air off the South Bay near the Dumbarton Bridge carries salt that pits bare steel in three to five years. A company that installs gates the same way in Union City as it does in Fremont or Castro Valley is going to hand you a gate that leans or rusts before the operator sees its second year. We do not install the same way everywhere. Our Gate Installation team specs every Union City job around footing depth below the active clay layer and galvanized or stainless hardware that holds up to coastal air, because that is the only way a gate here stays plumb and sound.
Every Union City installation includes the documentation Adrian Vance has kept since he started doing commercial access-control work in 2014. You get a written scope before we start, a written price with it, and a photo record of what was installed and how it was set when we leave. The 365-Day Done Right Promise covers the finished work: if something is not right, we make it right within that window, no argument and no additional charge. That is the Haven Standard, and it applies to every gate we hang in Union City, from a 1970s Decoto ranch to a new build near Union Landing.
Our Gate Installation Services in Union City

Driveway Gate Installation
We install swing and slide driveway gates across Union City’s housing stock, from original wrought iron replacements on older Decoto homes to ornamental steel slide gates in newer HOA communities near Union Landing. The Diablo clay under the flatlands means we pay particular attention to post footings: a 24-inch footing poured into active clay will heave out of plumb within one or two rainy seasons. We bore past the active clay layer and set galvanized posts in concrete, with stainless hinge fixings so the salt air off the South Bay does not eat the hardware before the gate has settled.

Pedestrian Gate Installation
A pedestrian gate on a Union City side yard or walkway installs in a day in most cases, and ranges from $850 to $2,200 for painted steel or aluminum, including hardware. Older Alvarado district homes often have narrow side-yard clearances where a custom-width swing gate fits better than a stock panel, and we measure to the inch before we quote. If you want a pedestrian gate keyed to match the driveway operator, we handle that wiring on the same visit.

Sliding Gate Installation
Sliding gates are a common choice on Union City lots where the driveway slopes toward the house or where setback leaves no room for a swing leaf to arc. A new cantilever or track slide gate with a Gate opener runs $4,200 to $9,400 here, and that is not because the steel costs more than in Fremont. Union City’s flatland soil movement pushes poorly set gate posts and rails out of line within a season, so we overbuild the track bed or cantilever footing from the start. The salt air near the Dumbarton corridor also argues for galvanized frames over painted steel if you want more than a few clean years.

Swing Gate Installation
Most Union City inquiries are for swing gates on ranch homes built from the late 1960s through the 1990s. These are typically double-leaf ornamental iron or chain-link driveways where the original posts predate UL 325 operator requirements. A new double swing gate with operator, two galvanized posts set past the clay layer, safety photo-eyes, and hardened stainless hinge fixings runs $3,800 to $7,800 in Union City, measured and quoted in writing before we order steel. The 365-Day Done Right Promise covers the full install.

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.
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AfterTrusted Brands We Service in Union City
We work on whatever motor is already on the property and install what fits the gate and the site, not what we happen to have in the van. Our Union City jobs regularly spec DoorKing slide operators for heavier commercial-style gates, Ghost Controls swing arms for residential driveways, and Elite openers where a property has an access-control tie-in. We carry common parts for these and six other major automation brands, so the job does not stall for a part to ship when your gate is half-hung. If you already have a written estimate from another company, bring it in and we will review it against what the site actually needs, at no charge.
Common Gate Installation Problems We See in Union City Homes

- Post footings poured 24 inches deep into Diablo clay. Winter saturation swells the soil and jacks the footing upward; summer desiccation lets it drop back. The hinge post seizes out of plumb, and within a season every swing gate on that post binds at the latch. We bore footings past the active clay layer, typically 42 inches or deeper, before setting any post in Union City soil.
- Painted steel frames pitting at the bottom rail within three to five years. The salt-laden marine air that drifts in off the South Bay near the Dumbarton Bridge settles on gate frames and eats bare or scratched paint first. Older Decoto ranch homes with original ornamental iron show this at the bottom rail and the hinge side. On those, we spec galvanized steel or add a zinc-rich primer under the paint, and we use stainless fasteners at every connection.
- 1970s chain-link driveway gates corroded at the hinge welds. The original galvanized posts on older Union City homes last a long time until the weld zones give out, then the leaf sags and the slide gate rack chews through its pinion. We see this enough in Alvarado that we now check hinge weld condition on every estimate visit.
- HOA communities near Union Landing holding residents to different safety and appearance standards. Alameda County and UL 325 already require photo-eyes and entrapment protection on automatic gates. Many Union City HOAs add their own finish and style requirements on top of that, particularly for slide gates visible from the street. We handle the compliance paperwork and the operator settings, not just the steel.
Pricing for Gate Installation in Union City, CA
Here is what Union City gate work actually costs, set flat and written before we start. A pedestrian gate runs $850 to $2,200. A single-leaf driveway swing gate with operator runs $2,400 to $4,600. A double-leaf swing gate with new galvanized posts set past the clay line runs $3,800 to $7,800. A slide gate with operator runs $4,200 to $9,400 depending on gate length, track versus cantilever, and whether a panel or access keypad is part of the job. The biggest cost swing on a Union City install is what is under the ground: if the existing posts are shallow or the clay has already heaved them out of plumb, resetting them properly is the difference between a gate that lasts and one that leans by spring. You approve the written price before any work begins. Call (928) 260-0864 and we will schedule a free measure.
We Also Serve Cities Near Union City

Our crews run Union City appointments all week, and we cover the neighboring cities for the same installation work: Fremont, Newark, San Lorenzo, and Castro Valley. If you are a few minutes outside Union City, call (928) 260-0864 and we will tell you flat-out whether we can route a crew to you and when.
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 Installation in Union City

Forty-two inches or deeper, and ideally past the active clay layer entirely. The Diablo clay under Decoto and Alvarado swells when winter rain saturates it and shrinks through the dry summer, and a 24-inch footing will ride that movement like a piston. We bore to 42 inches minimum on Union City flatland installs and set galvanized posts in concrete, which puts the footing below the zone that moves. If a previous shallow footing has already thrown a post out of plumb, we pull it and reset rather than hanging a new gate on a leaning post. Call (928) 260-0864 and we will measure your current posts before you spend anything.
Yes, measurably. Union City sits at the south edge of the Bay next to the Dumbarton Bridge corridor, and the persistent marine layer carries salt from the tidal flats and open water onto anything bare. A painted steel gate that might look clean in Fremont for eight years will show pitting at the bottom rail and hinge side in three to five years in Union City unless the steel is galvanized or primed with a zinc-rich coat before paint. We spec stainless hinge fixings and galvanized posts on every Decoto and Alvarado install for exactly that reason. Call (928) 260-0864 for a written spec, not a guess.
No. We have pulled enough leaning posts on older Decoto streets to know the pattern. When a 1970s or 80s wrought iron gate leans several degrees toward the curb, the hinge post has usually been heaved out of plumb by decades of clay soil movement, and re-hanging the leaves on new hinges only transfers that lean to the new hardware. The post does not want a hinge; it wants a 42-inch footing set in concrete past the active clay layer. One of our Decoto jobs replaced a 1980s double gate where the hinge post had leaned 4 degrees toward the curb. We pulled the rotten post, bored a 42-inch footing, set a new galvanized post with stainless hinge fixings, and hung a LiftMaster-operated gate on it. Two winters later, it is still plumb. Call (928) 260-0864 and we will tell you whether your post is worth saving.
Generally yes, and it is usually about appearance and finish first, safety second. A newer community near Union Landing will have an HOA that may require an ornamental iron slide gate finished to a particular color or rail profile, plus UL 325 photo-eyes and entrapment protection on the automatic operator. An older Decoto ranch home has no HOA, but often has a 35 to 55 year old original gate whose posts were set shallow into active clay. Both need the same footing discipline under the ground; the above-ground spec just differs. We handle the HOA paperwork for Union City properties and install to Alameda County code either way. Call (928) 260-0864 and we will work from your HOA’s written requirements, not around them.
The post, almost always. We see this on Union City gates every season. The operator arm attaches to the gate post, and when a painted or lightly galvanized post sits in the rain and salt air long enough, the base of the post starts to rust through, especially where it enters the concrete. Once that happens, the post flexes, the operator arm works against a moving target, and the board burns out trying to compensate. People blame the motor, but the motor is usually responding to a post that has failed underneath it. We catch this early on installs because we photograph the post base and note the condition before setting anything new. Call (928) 260-0864 before you buy a new operator; the fix might be under the ground.
Call Vance Gate Repair for Gate Installation in Union City
We install gates in Union City with the same evidence-first habit Adrian Vance has kept since 2014: a written price before work starts, a photo record of what we found and what we set, and a 365-Day Done Right Promise on the finished job. No verbal estimate and a handshake. No surprise invoice at the end. If you have a leaning post on a Decoto street, a rusting frame near the Dumbarton corridor, or an HOA spec near Union Landing, call (928) 260-0864 now. A live person answers, 24 hours a day, and we will schedule a free measure and a written quote.
Written by Adrian Vance, Owner at Vance Gate Repair, serving Union City since 2014.





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