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 Installation Across Altadena
Gate installation in Altadena runs $1,900 to $7,500 for most jobs, depending on whether you need a 12-foot driveway swing gate or a full sliding gate with automation, and we quote that price in writing before any work begins. Altadena is unincorporated LA County, which means permits and fire-access rules work differently here than in Pasadena, and a gate hung wrong will fail an LA County inspection. We know those rules cold because we work in this community constantly, and we answer the phone at (877) 610-2993 around the clock. Hal Gatewood started this company in 2001 and his name is on every invoice.
Why Gatewood Fence & Gate Is Altadena’s Preferred Gate Installation Company
Altadena homeowners tend to be skeptical of gate contractors, and for good reason. A lot of outfits quote one number over the phone and a different number at the door, especially in the 91001 and 91003 zip codes where driveway gates sit on long foothill lots. We operate differently. The price we quote is the price on the invoice, and we put our 90-Day Done Right Promise on every job in writing. If it’s not done right, we make it right, no runaround.
Being locally owned and owner-operated since 2001 means Hal Gatewood has been accountable to the same community for over two decades. His shop address is published, his license number is verifiable, and the person who shows up to your Altadena home is the same person whose name is on the truck. We also answer calls with a live person 24/7, not a voicemail or an answering service three states away. When a Santa Ana wind event tears a gate hinge at 9 p.m. in the foothills, you want to talk to a human who knows where Altadena is and what those winds do to gate hardware.
Our crews live and work in the Pasadena and Altadena area, so response times here are measured in hours, not days. We dispatch and schedule from our Los Angeles metro office, with crews who know the streets, the terrain, and the local county regulations. That local knowledge shows up in every installation.
Our Gate Installation Services in Altadena
Every gate we hang in Altadena is Gate Installation work done to current LA County code, with hardware sized for wind load, soil movement, and fire-access requirements. Here’s what we handle most often in this community:
Driveway Gate
Altadena’s housing stock leans heavily toward 1920s-1950s Craftsman bungalows and Spanish Colonial Revivals on hillside lots, many with long sloped driveways that have held ornamental iron driveway gates for generations. A typical driveway gate installation in Altadena runs $2,800 to $6,900, depending on width, automation, and whether the existing posts can be reused. Long driveways on Altadena’s foothill terrain often require heavier-duty operators because the gate has to work against a grade, not just swing on flat ground.
Pedestrian Gate
Pedestrian gates in Altadena are common on side yards and garden entries around the county’s older lots. A new pedestrian gate with proper post setting runs $950 to $2,400. We set posts deep enough to handle expansive clay soil movement, because a shallow post here will shift within a season, especially anywhere near the large oaks and eucalyptus trees that line Lake Avenue and the streets around Farnsworth Park.
Sliding Gate
Sliding gates make sense on Altadena properties where the driveway pitch is steep or where a swing gate would hang over the sidewalk or into the road. A cantilever sliding gate with automation typically runs $4,500 to $9,800 in Altadena. The county fire-access requirements often call for a minimum clear opening width, which is a real cost driver on rebuilds. We size the track, the rollers, and the operator for the specific grade and wind exposure of your lot.
Swing Gate
Dual-leaf and single-leaf swing gates are what we hang most often in the Meadows, on Altadena Drive, and across the foothill neighborhoods. A single swing gate installation runs $1,900 to $4,800 here, and dual-leaf double gates start around $3,900. Swing gates in Altadena need robust hinge posts because Santa Ana winds funnel down the San Gabriel canyons with real force. We set posts in concrete at a depth proportionate to the gate’s weight and height, then realign everything after installation so the gate hangs square.
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 Altadena
We install and service operators from LiftMaster, FAAC, BFT, Linear, Viking, Ghost Controls, DoorKing, Elite, and Mighty Mule. Around Altadena, we see a lot of Viking and Ghost Controls units on older gates, and Linear on mid-2000s installations. For new work, we frequently spec DoorKing and LiftMaster because they hold up to sustained wind loading and the county’s fire-access safety requirements. We keep common replacement parts stocked locally, so when your operator control board fails after a wind surge, you’re not waiting a week for parts to ship.
Common Gate Installation Problems We See in Altadena Homes
- Hinge posts leaning off plumb from clay soil movement and root intrusion. Decades of expansive clay and the root systems of Altadena’s large oaks and eucalyptus trees have shifted countless gate posts. No panel adjustment fixes this. The post must be reset or replaced at the footing.
- Obsolete control boards on legacy operators. Many Altadena gates still run pre-UL 325 control boards that date back decades. A Santa Ana wind surge burns them out and leaves the gate locked open or locked closed. Retrofitting a modern board with current safety photocells is often the smartest fix.
- Post-Eaton Fire rebuilds without county fire-access compliance. We’re seeing a wave of new gates installed on rebuilt Altadena properties that do not meet LA County fire-access standards. Knox-Box provisions and minimum apparatus-clearance widths were not applied to the original installations, and failing inspections means pulling up the gate and starting over.
- Hinge bolts sheared during Santa Ana events. Sustained wind gusts funneling down the San Gabriel canyons hit Altadena harder than the Pasadena flatlands just south. Undersized hinge hardware fails in a single storm, which is why we upsize hardware on every new installation.
Pricing for Gate Installation in Altadena, CA
What does gate installation cost in Altadena? For a manual pedestrian gate, budget $950 to $2,400. A single swing driveway gate runs $1,900 to $4,800. A sliding driveway gate with automation runs $4,500 to $9,800. A dual-leaf double gate runs $3,900 to $8,500 installed. These are the numbers we quote in Altadena, and they include the hardware, the post setting, and the labor.
What moves the price up or down is the gate width, the grade of your driveway, whether automation is involved, and critically, whether your property falls in the Very High Fire Hazard Severity Zone. Fire-access upgrades like Knox-Boxes and wider clearances add real cost on rebuilds, but skipping them means a failed county inspection and a gate you have to redo. We give free estimates, we honor the quote, and we offer $40 off any repair over $200, plus a permanent 10% discount for seniors and veterans. Every price is agreed before work starts.
We Also Serve Cities Near Altadena
If you’re just outside Altadena, we serve Altadena and the surrounding foothill communities including Pasadena, La Cañada Flintridge, East Pasadena, and San Marino. The fire hazard zones, hillside lots, and older housing stock are similar across this corridor, and so are the gate failures we fix every week. Call us if you’re anywhere in this pocket of the San Gabriel foothills.
Serving Altadena, CA - Our Local Coverage Area
We’re based in the Altadena 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 Altadena
Yes, in most cases a permit is required, and it is issued by the LA County Department of Regional Planning, not a city building department, because Altadena is unincorporated Los Angeles County. Contractors who assume Pasadena city codes apply often get this wrong. We handle the permit paperwork as part of installation and know exactly what the county inspectors look for. Call (877) 610-2993 if you want a permit pulled correctly the first time.
Usually we can reset the post and save the gate. A sagging hinge post in Altadena is almost always caused by expansive clay soil movement or root pressure from oaks and eucalyptus, and the fix is excavating the post footing, resetting it plumb in fresh concrete, and re-hanging the gate with new hinges. If the post itself is corroded or cracked, replacement is the honest answer. Hal will tell you which one you need after looking at it.
Yes. Properties in the Very High Fire Hazard Severity Zone increasingly must include Knox-Box provisions and minimum gate-width clearances for fire apparatus on rebuilt or upgraded properties. These requirements were not applied to original installations in many older Altadena homes, which is why we’re seeing failed inspections on post-Eaton Fire rebuilds. We install gates that pass county fire-access inspection the first time.
The wind event likely surged power or physically forced the gate against its stops, which burns out control boards and shears hinge bolts on older operators. Altadena takes Santa Ana winds harder than Pasadena because the winds funnel directly down the San Gabriel Mountain canyons. We see this constantly. The fix is often a modern control board with current safety photocells, and on many gates, upsized hinge hardware so the next wind event doesn’t repeat the damage.
In most cases yes, if the gate structure and hinge posts are sound. We can retrofit a modern operator with UL 325 safety photocells onto an existing ornamental iron gate, provided the posts are plumb and the gate itself is not so far gone that it’s cheaper to replace. That’s a judgment call we make honestly. A retrofit in Altadena typically runs $1,800 to $4,200 including the operator, wiring, and safety edges.
What Altadena’s Unincorporated Status and Fire Code Mean for Your Gate
Here’s what a generic gate page will never tell you: Altadena is not a city. Every gate permit, every inspection, and every fire-access requirement runs through the LA County Department of Regional Planning. Contractors who assume Pasadena city codes apply routinely hang gates that fail county inspection, and the homeowner gets stuck paying for re-work. Compounding this, the community sits in a Very High Fire Hazard Severity Zone at the San Gabriel Mountain foothills. That means driveway gates on rebuilt or upgraded properties increasingly face LA County fire-access requirements, Knox-Box provisions and minimum gate-width clearances for fire apparatus, that flatland neighborhoods simply never encounter. If you’re rebuilding after the Eaton Fire or upgrading a legacy gate, those requirements change what a safe, code-compliant installation actually costs. We install to those standards every day.
In the Meadows neighborhood of Altadena, our crew was called out for an older ornamental iron swing gate whose Viking operator had burned out during a Santa Ana wind event. The gate’s hinge post had shifted off plumb from decades of expansive clay soil and eucalyptus root pressure, so we reset the post footing, re-hung the gate with new hinge hardware, and replaced the operator with a LiftMaster model with UL 325 safety photocells. That brought the gate into current fire-access compliance for the unincorporated county. The neighbors came out, watched the job, and have called us for four more gates since. That’s how business works in Altadena, and we wouldn’t have it any other way.
Written by Hal Gatewood, Owner at Gatewood Fence & Gate, serving Altadena and the San Gabriel foothills since 2001.