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.
Before
After
Before
After
Before
AfterFast, Reliable Gate Access Control Across San Mateo
Gate access control in San Mateo typically runs $450-$1,850 installed, depending on whether you need a simple keypad, a phone entry system, or a full video intercom paired with a heavy estate gate. Most repairs on the west side near Hillsborough and the bay-front neighborhoods around 94404 are done same-visit, because we stock the common boards, keypads, and photocells San Mateo homes actually use. When a gate stops recognizing your code or the intercom goes dead, you want someone who knows whether the problem is the operator, the wiring, or the salt air eating the board from the inside out. Hal Gatewood has been fixing gates in the Bay Area since 2001, and the person who answers the phone at (877) 610-2993 will be a live person, not a recorded queue.
Why Gatewood Fence & Gate Is San Mateo’s Preferred Gate Access Control Company
We’re locally owned and owner-operated. Hal Gatewood’s name is on the shop, his license number is published, and anyone can look it up. That matters in San Mateo, where a lot of gate work sits on properties that have been in the same family for forty years and the owner wants to look the person doing the work in the eye before he starts.
Our crew serves San Mateo directly, with a metro office here in the San Francisco Bay Area that keeps scheduling tight and drive time short. When a keypad dies in the hills off Alameda de las Pulgas or a phone entry system stops ringing inside a house in Shoreview, we’re not commuting from two counties over. We know the streets, the grade changes, and the difference between a gate that needs a new board and a gate that needs a better post.
Every job comes with the 90-Day Done Right Promise in writing. That’s not a marketing line. If something we fixed fails within 90 days, one call brings us back at no charge to make it right. We also quote the price before we start, and that’s the price you pay, not a starting point.
Our Gate Access Control Services in San Mateo
We work on the full range of Gate Access Control equipment, but most San Mateo calls fall into four buckets. Here’s how each one plays out locally.
Keypad Entry
A dead keypad on a 1960s wrought-iron side gate in San Mateo is almost always a corrosion problem, not a programming problem. The marine layer that rolls through the Aragon and Baywood neighborhoods keeps relative humidity high year-round, and those old metal keypads trap moisture against the circuit board. In San Mateo’s 94402 and 94401, we replace more keypads due to oxide creep on the contacts than we do from actual button wear. We install sealed, weather-rated units and use dielectric grease where it counts. A standard keypad replacement in San Mateo runs $180-$420 including the part and labor.
Remote Control
When a remote stops working, the first thing we check is whether the receiver board still has clean power. In San Mateo, especially in the bay-adjacent 94404 and 94403, salt air and condensation inside the operator housing can corrode the receiver terminals within a few years. Replacing a remote and reprogramming a receiver is the quick fix, around $120-$280. But if the receiver itself is failing intermittently, we’ll tell you before we sell you a new remote, because we’d rather fix the cause than watch you come back angry in six months.
Phone Entry
Phone entry systems in San Mateo are common on the gated condo and HOA developments concentrated in 94403 and 94404, and on estate properties along the Hillsborough border. These systems ring a landline or cell phone when a visitor presses the call button, and the owner can open the gate from anywhere. The board on these units is sensitive to moisture and power surges, and we see failures from both. A phone entry board replacement in San Mateo typically runs $350-$800 depending on brand and whether we need to pull new wiring. We service DoorKing, Viking, and Ghost Controls phone entry systems and keep boards on the truck for most of them.
Card Reader
Card readers are popular on multi-unit properties and a few larger estates in San Mateo. The reader itself is fairly rugged, but the wiring back to the operator often runs through conduit that has been underground since the Clinton administration. When a card reader in San Mateo stops recognizing cards, the problem is as likely to be a corroded splice underground as a failed reader head. We trace the run, find the bad connection, and splice in fresh wire with sealed connectors. Card reader repair and replacement in San Mateo runs $300-$750 on average.
We also service the two sub-services that matter most on San Mateo’s high-end properties: video intercom and smart access. Ownership of a heavy custom gate means you want to see who’s there before you open it, and you want to control it from your phone without walking outside in the fog. We install and maintain both.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in San Mateo
We’re certified to service nine major gate brands, and in San Mateo we see a lot of Viking, DoorKing, and Ghost Controls equipment on the larger residential and HOA gates. We also work on Elite operators, which show up on some of the older estate properties in 94402. Because we stock parts for these brands locally, we can usually complete an access control repair in San Mateo the same day we diagnose it, without waiting on a shipped part. That’s a real advantage when your gate is the only thing between your driveway and the street. When we replace a board or a keypad, we use the matching brand’s parts, not a knockoff. The 90-Day Done Right Promise applies to every repair we make in San Mateo.
Common Gate Access Control Problems We See in San Mateo Homes
- Salt-air board corrosion in 94404 and eastern 94403: Mariners Island and the lagoon streets sit close enough to the bay that salt particles land on everything. Operator circuit boards in these areas can fail within five to seven years, a timeline that would surprise someone in Redwood City but is normal expectation here. We spec conformal-coated boards for replacement in these zip codes.
- Hinge post failure on 1940s-60s wrought-iron gates: San Mateo’s ranch homes and bungalows often retain original ornamental gates that are 60-70 years old. The marine moisture cycle has been working on those hinge posts for decades. When the gate sags, the fix starts at the post, not the middle of the panel.
- Motor burnout on steep hillside driveways in 94402: The western edge of San Mateo rises fast into the hills. If an operator isn’t calibrated for the specific grade, the motor works harder than it was designed to, heat builds, and the motor or the rack and pinion gears fail years early.
- Intermittent keypad or intercom failures: On many San Mateo homes the worst enemy isn’t rain, it’s the constant marine humidity that never lets boards fully dry. Intermittent failures that come and go with the fog are a classic sign of a corroded board or a loose connector.
Pricing for Gate Access Control in San Mateo, CA
We don’t quote by phone and we don’t quote by guess. But here are honest San Mateo ranges so you know what to expect before you call.
| Service | Typical Range in San Mateo |
|---|---|
| Keypad replacement (sealed, weather-rated) | $180-$420 |
| Remote reprogramming and receiver repair | $120-$280 |
| Phone entry board replacement | $350-$800 |
| Card reader repair or replacement | $300-$750 |
| Full video intercom install on existing gate | $850-$1,850 |
| Diagnostic service call (credited toward repair) | $75-$125 |
The final price is quoted and agreed before any work starts. Not an estimate that can creep. Not a range that widens when we’re standing in your driveway. What we quote is what you pay. We also offer $40 off any repair over $200, a free second opinion on any written estimate, no trip charge for San Mateo service calls, and a permanent 10% discount for seniors and veterans. Call (877) 610-2993 and we’ll give you exact numbers for your gate and your equipment.
We Also Serve Cities Near San Mateo
We cover the surrounding Peninsula communities, including Foster City, Belmont, Hillsborough, and Redwood Shores. If you’re in one of those areas and need Gate Access Control in San Mateo level service, we’ll come to you with the same upfront pricing and the same 90-Day Done Right Promise. The person who answers the phone lives in the Bay Area and knows which side of El Camino you’re on when you describe your neighborhood.
Serving San Mateo, CA - Our Local Coverage Area
We’re based in the San Mateo 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 Access Control in San Mateo
The short answer is salt. Mariners Island and the lagoon neighborhoods in 94404 sit almost on top of the bay, and salt-air particulate lands on operator circuit boards, motor housings, and wiring terminals all day, every day. In Palo Alto, those parts sit in relatively clean inland air. In Mariners Island, a standard board can corrode to failure in five to seven years. When we replace an operator in that area, we use conformal-coated boards and marine-grade stainless hardware as the default spec. Without those materials, you’ll be replacing the same parts again on the same timeline. Call (877) 610-2993 and we’ll tell you exactly what failed and what it should be replaced with.
Yes, if your sliding gate lacks working entrapment protection, you likely need to update it. California enforces UL 325 requirements for automated gates, which means working safety photocells, proper force settings, and contact edges on sliding gates. Many HOA gates in 94403 were installed before these rules were enforced and have since lost their edge sensors or never had functioning photocells. We inspect for compliance on every sliding gate repair we do in San Mateo and can retrofit the required sensors without replacing the whole gate. The best way to know what your specific gate needs is a site visit. Call (877) 610-2993 for an assessment.
Fix the post first. A gate sags in the hinge post, not in the middle, and if you rebuild the keypad first you’ll still have a gate that drags and binds and eventually tears up the operator and the lock. On a 1960s wrought-iron gate in San Mateo, the hinge post has absorbed sixty years of marine moisture, and the steel inside the concrete is likely rusted and expanding, which cracks the post base. We can dig out the old post, set a new marine-grade stainless one in fresh concrete, and then install a sealed keypad that actually stays dry. If you do it in the other order, you’ll fix the keypad twice. Call (877) 610-2993 and we’ll look at the post before anything else.
We use marine-grade enclosures, conformal-coated boards, and sealed connectors on every video intercom install we do in the bay-front parts of San Mateo, particularly 94404 and eastern 94403. The camera unit and the call station both get gasketed housings that prevent salt-laden moisture from reaching the electronics. We also run the wiring through sealed conduit where it’s exposed to the weather. A standard residential intercom installed without these precautions near the bay will start showing corrosion failures within a few years. Installed the way we do it, the same unit should run reliably for a decade or more. Call (877) 610-2993 and we’ll spec it correctly for your location.
Nine times out of ten, it’s not the operator. It’s the slope calibration. Hillside driveways in 94402, especially the ones that climb toward Hillsborough, put constant load on the motor if the operator isn’t set for that specific grade. The motor runs hot, the gears strip, and the board eventually burns out. A properly calibrated operator on the same gate will pull the same load without the constant fight. We’ve replaced motors on steep San Mateo driveways where the previous install was done by someone who treated a 15-degree grade like a flat lot. That’s the difference between a part swap and a qualified repair. Call (877) 610-2993 and we’ll check the grade, the operator, and the gearing before we tell you what needs to happen.
One Thing Every San Mateo Homeowner Should Know
San Mateo has two completely different gate failure profiles, and they depend on which side of the city you live on. On the bay side, in the 94404 lagoon communities around Mariners Island and the eastern edges of 94403, salt air is the killer. Gate motors, boards, and ferrous metal parts corrode at a rate that would shock someone in San Jose or Palo Alto. We spec conformal-coated boards and marine-grade stainless as standard over there. On the west side, in 94402 and the hills that border Hillsborough, the problem is gravity. Steep driveway grades overload operator motors that were never calibrated for the slope. A gate that never gets a break from the load burns through motors and strips gears years early. We had a call on a Mariners Island lagoon street in 94404 where a rusted Viking swing gate operator had given out, and the owner wanted a matching DoorKing keypad entry and video intercom on the existing estate gate. We replaced the failed hinge post with marine-grade stainless, recalibrated the loop detector for the steep driveway approach, and set the safety photocells to meet UL 325 entrapment protection. The gate now opens silently and the owner can see and speak to visitors from the house without walking to the gate. That’s the kind of job we do here. And the reason we know which spec goes with which side of San Mateo is that we’ve been doing it long enough to see what fails and why.
Call (877) 610-2993 for a free estimate on gate access control in San Mateo. A live person answers, we quote the price before we start, and the 90-Day Done Right Promise covers the work in writing.
Written by the team at Gatewood Fence & Gate, serving San Mateo since 2001.