Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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AfterFast, Reliable Fence Installation Across Key Largo
Fence installation in Key Largo, FL typically runs $3,500 to $9,000 for a full residential install, with aluminum and vinyl being the two materials that actually survive out here. What most homeowners don’t find out until a fence fails is that Key Largo isn’t like the mainland. You can’t dig post holes the normal way, standard hardware rots in two years, and a cheap quote from a Miami contractor usually means you’ll be replacing the whole thing inside a decade. If you’re pricing a fence in Key Largo, call (877) 610-1318 and we’ll give you a written, line-item estimate built for this island, not for Homestead.
Why Barrett & Sons Construction Is Key Largo’s Preferred Fence Installation Company
Tom Barrett founded Barrett & Sons in 1998, and his sons run the crews. That matters in a place like Key Largo because the work here is different, and it takes someone who has actually done it to know why. We’ve pulled old fence posts out of Key Largo yards that snapped clean at the concrete-air line, and we’ve had to explain to homeowners why the zinc hinges they bought at a big-box store in Florida City seized solid in eighteen months. Our crew members are background-checked and uniformed, and they carry the Barrett & Sons name on the truck. A live person answers our phone 24 hours a day, 7 days a week, not a voicemail box and not an out-of-state call center.
Our Fence Installation team handles everything from simple property-line fences to full canal-front enclosures. We serve Key Largo with the same written-change-order policy Tom has used since day one: every scope change arrives on paper before work proceeds. No surprise invoices. Every eligible job gets permits pulled and inspections signed. And every fence we install is backed by the written 90-Day Done Right Promise. If it’s not done right, Tom comes back and makes it right, one call.
Our Fence Installation Services in Key Largo
Aluminum Fence
Aluminum is the material we recommend most often on Key Largo, and for good reason. Salt spray off the Atlantic and Florida Bay eats galvanized steel posts in five to seven years. We specify 6061-T6 marine-grade aluminum posts with 316 stainless fasteners on every aluminum fence we install in Key Largo. The cost runs $4,000 to $10,000 for a typical residential lot, and that price includes core-drilling into the limestone, which we’ll get to. A well-built aluminum fence here should outlast the mortgage.
Vinyl Fence
Vinyl fence installation in Key Largo runs $3,500 to $9,000. Vinyl makes sense here because it doesn’t rust and it doesn’t absorb salt. The failure point on vinyl fences in Key Largo is almost never the vinyl itself, it’s the internal metal stiffeners and post reinforcements that most manufacturers put in. We replace those with marine-grade components and set posts in epoxy-anchored sleeves, which is not how anyone installs vinyl in Homestead. That’s the difference between a fence that still looks new in ten years and one that’s leaning toward the canal.
Wood Fence
Wood fences in Key Largo need honest talk. The humidity sits above 80% most of the year, and rain-driven salt gets into every joint. Non-marine lumber will delaminate and rot at the rail-to-post joints in three to five years. We build wood fences here with pressure-treated marine-grade lumber, stainless connectors, and rail-to-post joinery designed for expansion and salt exposure. Wood is the cheapest option up front, but on Key Largo it’s rarely the cheapest over fifteen years. We’ll walk you through the numbers before you decide.
Fence Repair
Most of the fence repair calls we get in Key Largo are for exactly three things: snapped posts, seized hinges, and gate frames that have sagged out of square. We recently installed an aluminum fence on a canal-front home off Ocean Reef Drive where the old galvanized posts had snapped at grade within six years. Our crew core-drilled into the limestone, set marine-grade aluminum posts in a two-part epoxy, and used all 316 stainless fasteners. The owner now has a fence that will outlast the mortgage. If your fence is leaning, binding, or rusting through at the base, call us before it gets worse. Repairs are where the 90-Day Done Right Promise does its best work.
What happens when you call
- 1
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 Key Largo
We carry and install fencing from manufacturers whose specs hold up in a salt-air, high-wind environment. That includes aluminum and vinyl lines from PGT and Simonton, among others. We don’t stock mystery brands off a van. If you want to look up the materials before you sign anything, we’ll give you the exact product names and spec sheets. Because every fence we install in Key Largo gets hit with the same salt spray, the same humidity, and the same wind load, we spec what survives, and we put it in writing.
Common Fence Installation Problems We See in Key Largo Homes
- Posts snapping at the concrete-air line. Standard galvanized posts set in wet concrete corrode at the interface between concrete and air. Salt spray and tidal splash accelerate it. Most fence posts in Key Largo fail right where they enter the concrete, within five to seven years.
- Hardware that seizes or crumbles. Standard zinc-plated hinges and latches don’t last two years out here. We replace them with 316 stainless as a baseline specification, not an upgrade. Anything less is a scheduled failure.
- Wood rot at the rail-to-post joints. Constant 80% plus humidity and rain-driven salt mean non-marine lumber delaminates. The rails stay intact while the joints turn to mush. We use marine-grade lumber and stainless connectors on every wood fence in Key Largo.
- Fences built for the mainland, not the Keys. The most expensive fence is the one a Miami contractor installs using inland specs. It looks fine for a year or two, then the hardware fails, the posts lean, and the whole thing gets torn out. That’s why our written change orders specify every fastener, every sleeve, and every post treatment before we start.
Pricing for Fence Installation in Key Largo, FL
Here are the honest numbers for Key Largo, not national averages. A coastal-spec aluminum fence runs $4,000 to $10,000. A vinyl fence, installed with marine-grade post reinforcements and epoxy-set sleeves, runs $3,500 to $9,000. What moves the price is linear footage, gate count, the depth of the limestone at your specific lot, and whether you’re on a canal or an interior street. The reason our numbers look higher than an inland quote is the hardware. 316 stainless costs more than zinc. Epoxy anchoring costs more than dumping a bag of concrete. But the inland-spec fence will need new hardware in two years and new posts in seven. Call (877) 610-1318 for a free, written estimate. We’ll come out, look at your lot, and tell you exactly what it’ll cost before you sign anything.
| Fence Type | Key Largo Price Range | What’s Included |
|---|---|---|
| Aluminum Fence (coastal spec) | $4,000-$10,000 | 6061-T6 aluminum posts, 316 stainless fasteners, epoxy anchoring, permit |
| Vinyl Fence (marine reinforcements) | $3,500-$9,000 | Marine-grade internal posts, epoxy-set sleeves, stainless gate hardware |
We Also Serve Cities Near Key Largo
Barrett & Sons coordinates scheduling from our Miami-area office, but the crews you’ll see in Key Largo live and work in South Florida. We also install fences in Florida City, Homestead, Leisure City, and Naranja. If you’re just over the county line from Key Largo, give us a call. No trip charge inside the county.
Serving Key Largo, FL - Our Local Coverage Area
We’re based in the Key Largo 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 - Fence Installation in Key Largo
Because Key Largo sits directly on top of the Key Largo Limestone formation, a fossilized coral reef that surfaces just feet below grade. You literally cannot auger through it. Every fence post here has to be core-drilled into the bedrock and anchored with epoxy or driven piling adapters. That’s why our quotes for Key Largo are built differently than our quotes for Homestead, and it’s why a mainland contractor’s estimate often turns out to be fiction once they hit rock. Call (877) 610-1318 and we’ll explain it over the phone or in person. Estimates are free.
Yes, most fences in Key Largo require a permit through Monroe County, and the ROGO (Rate of Growth Ordinance) system applies to new construction permits, not typical fence replacements or repairs. ROGO caps new building allocations island-wide, so a fence tied to new construction can sit in queue longer than a fence on an existing lot. We pull permits on every eligible job and we track the ROGO allocation process so you don’t get surprised by the timeline. Call (877) 610-1318 if you want us to check your specific lot before you buy materials.
316 stainless steel. That’s the full answer. Not zinc-plated, not galvanized, not the black powder-coated hinges from the home center. 316 stainless is the only hardware we’ve seen survive five-plus years of Key Largo salt spray without seizing or crumbling. We spec it on every hinge, every latch, and every gate component. If a quote doesn’t say 316, it’s not a coastal-spec fence. Call (877) 610-1318 and we’ll send you the hardware spec sheet before you decide.
Because it was built with inland-grade lumber and standard fasteners. The constant 80% plus humidity and rain-driven salt on Key Largo delaminate non-marine lumber at the rail-to-post joints, and standard nails or screws rust out of the wood. A wood fence built with marine-grade pressure-treated lumber and stainless connectors can last, but it costs more than the inland version. If your fence is graying and soft at the joints, it’s usually repairable if we catch it early. Call (877) 610-1318 for a free inspection.
A properly installed vinyl fence in Key Largo will handle hurricane-force winds, but only if the posts are anchored into the limestone with epoxy-set sleeves and the internal stiffeners are marine-grade. Vinyl itself doesn’t rust and doesn’t absorb salt, which is why it’s a good choice here. The failures we see are from inland installers who set vinyl posts in shallow concrete and used cheap metal inserts. That fence will crack or lean. Ours won’t. Call (877) 610-1318 and we’ll show you the difference in writing.
Call Barrett & Sons Construction for Fence Installation in Key Largo
If you live in Key Largo and you’re tired of contractors who don’t understand the limestone, the salt, or the permit process, call Barrett & Sons Construction at (877) 610-1318. Tom’s name, address, and license number are published and verifiable. Look us up before you sign anything. We offer a free second opinion on any written estimate, $40 off any repair over $200, no trip charge inside the county, and a permanent 10% discount for seniors and veterans. Ask for a written, line-item fence quote built for Key Largo, not for the mainland.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Key Largo and South Florida since 1998.