Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Bathroom Remodeling Across Key Biscayne
A full bathroom remodel in Key Biscayne typically runs $9,000 to $28,000, with walk-in shower conversions starting around $3,500 and master baths on the upper end when you’re moving walls, rerouting plumbing, or working in a high-rise condo with concrete slab constraints. The island’s salt air, flood-zone elevation rules, and older condo stock mean bathroom work here is genuinely different from what a mainland crew is used to. We’re Barrett & Sons Construction, owner-operated since 1998, and Tom Barrett’s name is on the truck, the contract, and the permit. Call (877) 610-1318 and a live person answers, day or night.
Why Barrett & Sons Construction Is Key Biscayne’s Bathroom Remodeling Company
Key Biscayne is a barrier island. That’s not a marketing line, it’s a logistics reality. Every fixture, every tile pallet, every dumpster we haul off your property has to cross the Rickenbacker Causeway, and if a subcontractor forgets one valve or one box of Schluter membrane, it’s a half-day round trip to fix it. We plan Key Biscayne jobs like island jobs, not mainland jobs that happen to have a bridge attached, and that same island logistics mindset carries over to our Fence Installation in Key Biscayne.
Our crews have remodeled bathrooms in the 1990s-era concrete-block homes near Crandon Boulevard, in the 1960s and 70s high-rises along Ocean Drive and Harbor Drive, and in the newer construction around the Village of Key Biscayne. What that means practically: we already know which buildings have cast-iron waste lines that need replacing, which condos require noise-curfew work windows, and which associations want a signed set of drawings before we even park.
Every Key Biscayne estimate comes as a written, line-item scope. Every change order is on paper before work moves. And every job we finish carries the 90-Day Done Right Promise: if something isn’t right, Tom comes back. One call.
Our Bathroom Remodeling Services in Key Biscayne
Full Bathroom Remodeling
We handle complete gut-and-rebuild bathrooms across Key Biscayne, from the 33149 single-family homes near the golf course to condos where the board requires specific contractor documentation. Full remodels on the island usually fall between $9,000 and $28,000, driven by whether you’re keeping the existing footprint or moving drain lines through concrete. The salt and humidity here punish shortcuts, so we use Schluter waterproofing systems rather than hoping a contractor’s “we seal it later” actually happens.

Walk-In Showers & Shower Remodeling
Walk-in shower installations in Key Biscayne run $4,500 to $12,000. The aging condo stock on the island is the biggest driver of this work: original fiberglass pans from the 1970s crack, and the tile surrounds behind them hide years of slow moisture accumulation. We build curbless entries for homeowners planning to age in place, and we’re careful about waterproofing because a leaking shower on an upper floor of a Key Biscayne high-rise is a six-figure problem for the unit below you.

Tub-to-Shower Conversion
A tub-to-shower conversion in Key Biscayne costs $3,500 to $10,000. Retirees on the island tell us the same thing over and over: they don’t take baths anymore, and stepping over a tub wall is the single biggest fall risk in their home. We convert tubs to low-threshold or zero-threshold showers, and we handle the plumbing reroute, the valve replacement, and the full waterproofing envelope. It’s one of the highest-value bathroom changes you can make in this market.

Vanities, Tile & Fixtures
Vanity installation runs $800 to $3,000 in Key Biscayne depending on whether you’re doing a simple swap or building out double sinks with stone tops. Tile work gets priced per square foot once we see the substrate, because half the island’s bathrooms still have original mud beds from the 60s and 70s that either get reused or come out entirely. We install Grohe and Sterling fixtures most often on the island: they hold up in salt air better than unplated brass, and replacement cartridges are available locally, which matters when a part fails and you don’t want to wait a week for shipping.

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.
Trusted Brands We Service in Key Biscayne
We install Schluter waterproofing systems on every shower and tub surround we build on Key Biscayne, not because the brand name looks good on a spec sheet but because a failed waterproofing layer in this climate is a mold problem, a structural problem, and a board-approval problem all at once. We stock common Schluter, Grohe, and Sterling parts in our South Florida operation, so when a trim kit shows up scuffed or a valve cartridge is missing, we don’t sit on our hands waiting for a distributor. We fix it the same week. This is our Bathroom Remodeling team’s standard, on every island job.
Common Bathroom Remodeling Problems We See in Key Biscayne Homes
- Chloride-corroded rebar in older condo slab floors. Decades of salt spray from Biscayne Bay and the Atlantic work into concrete and rust the steel inside. When we open a 60s or 70s bathroom floor on Key Biscayne, we sometimes find spalled concrete that has to be repaired before new tile goes down.
- Cast-iron waste lines at the end of their life. The original cast-iron drain stacks in older island condos are heavily corroded from the inside. A bathroom remodel is often the only time anyone sees them, and it’s better to replace a section while the wall is open than to patch it and hope.
- Mud-bed tile walls from the original build. Pre-Andrew Key Biscayne bathrooms were often built with thick mortar beds rather than modern backer board. They’re heavy, they’re brittle, and when they fail, they fail as a unit. We handle the full tear-out, not just the visible tile.
- FEMA elevation rules that surprise mainland contractors. Homes in Key Biscayne sit in AE or VE flood zones. If a remodel touches mechanical systems, those systems must meet base flood elevation. We plan for that from day one, because the permit office on the island will not issue a certificate of occupancy without it.
Pricing for Bathroom Remodeling in Key Biscayne, FL
Here’s the honest math for Key Biscayne. A small bathroom remodel in the island’s older condos starts around $5,000 and tops out near $12,000. A standard full bathroom remodel runs $9,000 to $28,000. Walk-in shower installations land between $4,500 and $12,000, and tub-to-shower conversions run $3,500 to $10,000. The three things that move your number most on this island: whether you’re in a single-family home or a condo association with access rules, whether you’re moving plumbing through an existing concrete slab, and whether your building’s original drain lines need sectioning out.
What we won’t do is quote you a number on the phone and hand you a different bill at the door. Your scope is written. Your allowances are written. Every change order is on paper before work proceeds. Call (877) 610-1318 for a free, written estimate. We also offer a free second opinion on any written estimate you already have, a $40 discount on any repair over $200, no trip charge inside the county, and a permanent 10% discount for seniors and veterans.
We Also Serve Cities Near Key Biscayne
Our crews serve Key Biscayne and the surrounding South Florida communities, including Coconut Grove, Coral Gables, Miami Beach, and Miami. If you’re a homeowner in one of those areas with a bathroom that’s seen better decades, the same written-scope, written-change-order process applies. We also handle Roofing in Key Biscayne and Windows & Doors in Key Biscayne for island homeowners who need water intrusion fixed before a bathroom remodel makes sense.
Serving Key Biscayne, FL - Our Local Coverage Area
We’re based in the Key Biscayne 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 - Bathroom Remodeling in Key Biscayne
Most Key Biscayne bathroom remodels go from signed contract to first day of demolition in two to four weeks. The variable is usually your condo or HOA: boards on the island typically want contractor licensing documents, insurance certificates, and a scope of work before they’ll sign off, and that review window is what we can’t shorten. Single-family homes on the island move faster. Call (877) 610-1318 and we’ll give you a straight timeline for your exact building.
We work in both. The condos along Crandon Boulevard, Harbor Drive, and Ocean Drive are a major part of our Key Biscayne work, and we’re used to the association requirements: limited work hours, freight elevator scheduling, and written notice to adjacent units before noisy demolition. We also handle the single-family homes throughout 33149, including the pockets north of the golf course and the streets east of Crandon Park, and we offer our Driveway & Pavers in Key Biscayne for homeowners looking to upgrade their exteriors.
Sometimes, and the reason is logistics, not markup. Every delivery, every dumpster, and every crew trip crosses the Rickenbacker Causeway. When a supplier misses a delivery window or a fixture arrives with a cracked glass panel, the replacement takes another day. We build that into our Key Biscayne schedule rather than springing it on you mid-project. The honest range is $9,000 to $28,000 for a full bathroom remodel, and we’ll show you exactly where your dollars go in writing.
Yes, on every job where they’re required. The Miami-Dade County permitting office in the HVHZ is not a place to cut corners, and the association boards on Key Biscayne know exactly what to ask for. We pull the permit, we schedule the inspections, and the inspector’s sign-off is part of the job closeout. If a contractor tells you a bathroom permit isn’t necessary on this island, get a second opinion. The permit inspector works for you, not for us, and that’s exactly why we like having him on the job.
If anything we installed or built during your bathroom remodel isn’t right within 90 days of completion, Tom Barrett comes back and makes it right. One call. It’s written on every contract, not buried in a warranty booklet. That promise covers our workmanship on every shower, tub, vanity, and tile surface we touch in Key Biscayne, and it’s the same guarantee we’ve backed since 1998.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Key Biscayne with written scopes, written change orders, and a 90-Day Done Right Promise on every bathroom remodel.







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