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 Access Control Across Foster City
Gate access control in Foster City means keypads, card readers, phone entry, and video intercoms installed on gates that sit over bay mud, face salt air from the lagoons, and get judged by an HOA board. The keypad itself is rarely the problem. In Foster City, posts shift, photocells fall out of alignment, and marine moisture eats at contact points. That’s the work we do. Call (877) 610-2993 and Hal Gatewood or one of his crew will answer directly. We know which parts fail first here, and we fix them so they stay fixed.
We’re not a call center three states away. We coordinate from the San Francisco Bay Area office and crews serve Foster City locally. You get a live person on the phone, a straight quote before work starts, and a written 90-Day Done Right Promise on every job. If it’s not right, Hal comes back. That’s the whole promise.
Why Gatewood Fence & Gate Is Foster City’s Preferred Gate Access Control Company
Hal Gatewood started Gatewood Fence & Gate in 2001 and never went anywhere. The name is on the shop, the address is published, and the license number is there for anybody to look up. When a Foster City homeowner calls about a gate that opens sometimes and faults other times, Hal doesn’t read from a script. He asks which lagoon finger you’re on, because he knows the settlement pattern on Edgewater Boulevard acts different than the one over near Catamaran Park.
The 94404 zip code has a particular set of gate failures: the original 1970s through 1990s townhome and condo developments have ornamental iron and aluminum gates that are now 30 to 50 years old, sitting on bay mud that never finished settling. Posts heave. Photocells misalign. The keypad still works, but the operator faults because the beam got knocked out of line. Hal’s crew fixes the post, not just the electronics. That’s why Foster City customers keep our number in their phone. We answer 24/7, and the person who shows up is the same background-checked, uniformed tech you talked to, or Hal himself.
Our Gate Access Control Services in Foster City
Our Gate Access Control team handles everything from a single keypad replacement to a full system with video intercom, loop detectors, and phone entry. In Foster City, three sub-services dominate the call log: keypads, video intercoms, and smart access retrofits. Here’s what that looks like on the ground.
Keypad Entry
A keypad should be the simplest part of your gate. In Foster City, the problem is usually what the keypad attaches to, not the keypad itself. When a hinge post tilts even half an inch, the striker plate binds, the operator strains, and the keypad looks like it’s failing. It’s not. We check the post first, then the wiring. A typical keypad replacement on a Foster City swing gate runs $250 to $540 installed, depending on whether we’re pulling new wire through an existing conduit run. If the conduit’s missing, which happens on builder-grade installs, that’s a separate conversation we have before we quote anything.

Remote Control
Adding remote control to an existing gate operator in Foster City usually costs $180 to $400 per receiver and remote set. If your operator is a builder-grade unit from the original development, we might recommend a receiver upgrade rather than fighting the old board. Salt air from the lagoons gets into cheap receiver housings and corrodes the terminals. We stock sealed units that hold up to the marine layer. It’s a small change that stops the “remote works sometimes” calls.

Phone Entry
Phone entry systems let visitors call from the gate and you open it from your phone. In Foster City, the HOA often specifies a certain brand or style. We’ve installed phone entry on townhome communities near Marlin Park and single-family gates near Bay Road, and we’re familiar with the architectural standards most Foster City HOAs enforce. A phone entry system with a single line runs $600 to $1,100 installed here, depending on the brand and whether the cellular unit needs a new SIM path or can ride your existing phone line.

Card Reader
Card readers make sense for HOA communities and multifamily gates off Gull Avenue or Edgewater Place. A standalone card reader retrofit runs $400 to $800 in Foster City, installed. The readers themselves are durable. The terminals corrode. Lagoon air with salt content settles into exposed connectors and creates intermittent “card not read” failures. We swap in sealed connectors and the problems stop.

Video Intercom
Video intercom upgrades are the fastest-growing request in Foster City. Modern systems let you see who’s at the gate on your phone, whether you’re home on East Hillsdale Boulevard or at work in San Mateo. A video intercom retrofit on an existing operator runs $900 to $1,800 installed, depending on whether we’re reusing your existing wiring or pulling new cable. Many Foster City townhome units from the 1980s have old two-wire doorbell runs that won’t carry video reliably, so we factor in a new pull. You get a written price before any work starts.

Smart Access
Smart access ties your gate into your phone, your home automation, and sometimes your HOA’s guest management software. In Foster City, we often see builder-grade operators that were never designed for smart modules. We install add-on controllers from BFT and Viking that bring an older operator into a modern access ecosystem without replacing the whole unit. A smart access retrofit typically runs $350 to $750 per gate in the 94404 zip code. Hal will tell you straight if your existing operator is worth retrofitting, or if you’re better off replacing it. He fixes gates, he doesn’t upsell them.

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 Foster City
We’re certified to service nine major gate brands, including FAAC, BFT, Linear, and Viking. That matters in Foster City because HOA boards often specify a brand, and you can’t just put anything in. We stock local parts for the most common units in the 94404 area, so when we come out for a service call on a FAAC operator near Catamaran Park, we usually have the board or sensor in the truck. No waiting two weeks for a part to ship. If you’ve got a Viking phone entry system with a corroded relay, we likely fix it in one visit. That’s the benefit of a local repair-first shop. We bring the van, not a catalog.
Common Gate Access Control Problems We See in Foster City Homes
- Misaligned safety photocells from bay mud settlement. Foster City gates sit on reclaimed tidal mudflats that settle unevenly for decades. A post tilts three-quarters of an inch, the photocell beam goes out of line, and the operator faults or reverses for no reason you can see. The keypad works fine. The gate doesn’t.
- Corroded keypad and card reader contacts from lagoon air. The brackish lagoon air and salt-laden bay breezes settle on exposed terminals and contact points. Keypads get intermittent. Card readers say “not read” sometimes. The fix is sealing the connections, not replacing the whole unit.
- Water intrusion into builder-grade operators. Marine layer moisture creeps into operators that were installed without proper conduit runs during the original build. Boards short. The operator faults after fog or rain. We re-run the conduit, install a gasketed enclosure, and the problem goes away.
- HOA style restrictions on new hardware. Most Foster City residential stock is HOA-governed. A new keypad or intercom has to match the community’s material and style spec. We’ve done this for years and can help you document the request before you spend a dollar.
Pricing for Gate Access Control in Foster City, CA
Here’s what gate access control work actually costs in Foster City. A keypad replacement runs $250 to $540. Adding remote control is $180 to $400. A phone entry system runs $600 to $1,100. A card reader retrofit lands between $400 and $800. A video intercom upgrade is $900 to $1,800. Smart access controllers run $350 to $750 per gate. If we’re repairing your existing system rather than installing new, the price changes based on what we find, but you’ll know the number before we touch anything. Every quote is agreed in writing before work starts. That’s not a courtesy, it’s how Hal has operated since 2001. We charge no trip fee inside the county, and you can get a free second opinion on any written estimate you’ve received from anyone else. Seniors and veterans get a permanent 10% discount. A repair over $200 gets $40 off. No haggling. Just the price, up front.
On a lagoon-fronting street in Foster City’s 94404, our crew got called to a 1980s townhome community where the swing gate’s keypad entry worked, but the operator kept faulting. The hinge post had tilted three-quarters of an inch out of plumb from bay mud settlement, throwing the safety photocell beam out of alignment. We reset the post into an engineered footing that accounts for the mud, reinstalled the LiftMaster operator, and added a loop detector so the gate stopped trying to close on cars in the driveway. The keypad never was the problem. That’s the kind of thing we see here all the time, and it’s why you don’t call a generalist to fix a Foster City gate.
We Also Serve Cities Near Foster City
Gate Access Control in Foster City keeps us busy, but we also run calls up and down the Peninsula and along the bay. That includes Redwood Shores, San Mateo, Belmont, and San Carlos. If you’re just over the border from Foster City, the same pricing, the same warranty, and the same live answer apply. Call (877) 610-2993 and we’ll set a time that works.
Serving Foster City, CA - Our Local Coverage Area
We’re based in the Foster 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 Access Control in Foster City
Foster City’s marine layer and lagoon air put moisture into gate enclosures and terminals, especially on builder-grade operators without proper conduit. Fog rolls in, condensation forms, a board or connector shorts, and the gate faults. Then the sun comes out, the moisture evaporates, and it works again. That’s the intermittent pattern we see all over the 94404 zip code. The fix is usually a new gasketed enclosure, sealed connectors, and a re-run of conduit if the original build skipped it. Call (877) 610-2993 and Hal’s crew will diagnose it on site.
Yes, and in Foster City, it usually is. The bay mud under the lagoon-fronting streets never fully settles, so hinge posts tilt out of plumb over time. A post that’s off by even half an inch makes the gate bind, the operator strain, and the travel arc cut short. The keypad is still sending its signal. The gate just can’t physically complete the swing. We reset the post into an engineered footing, and that’s the repair. Most companies would replace the operator and leave the post, and you’d call again in six months.
Usually you can add one, if the operator has an open relay or control board input. We’ve retrofitted video intercoms onto existing FAAC, BFT, and Linear operators all over Foster City. The real variable is the wiring. Older townhome units, especially from the 1980s, have two-wire runs that won’t carry video. We handle the power run and the new cable pull, or we use a cellular-capable intercom that doesn’t need a hardwired path. Either way, the quote is written before we start.
The brackish lagoon air puts a fine salt film on exposed contact points, terminals, and relay pins. Over time, that film creates resistance. The card reader “sometimes” reads. The keypad “sometimes” registers. It’s not a programming fault. It’s corrosion. We replace the exposed connectors with sealed versions and use dielectric grease on the terminals. On homes right on the water, we might recommend a keypad with a neoprene cover or a more weather-resistant housing. It costs more up front and ends the callbacks.
Most do. Foster City’s residential stock is almost entirely HOA-governed townhomes, condos, and planned developments from the 1970s through the 1990s. A new keypad, video intercom, or card reader usually has to match the community’s material and style specifications. Some boards want a written proposal before installation. We’ve worked with Foster City HOAs on this for years and can help you put together the documentation. If the board needs a specific brand, we service all nine big ones, including FAAC, BFT, Linear, and Viking.
Call Hal Directly
If your gate access control is acting up in Foster City, call (877) 610-2993. A live person answers, 24/7. Hal will ask the right questions, tell you honestly what it likely costs, and show up when he says he will. The price is quoted and agreed before any work starts. The 90-Day Done Right Promise is in writing. If it’s not right, he comes back. That’s how it’s been since 2001, and that’s why the name on the shop still matters.
Written by Hal Gatewood, Owner at Gatewood Fence & Gate, serving Foster City with gate access control, repair, and installation.





Before
After
Before
After
Before
After