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 – $28,000, with walk-in shower installations landing between $4,500 and $12,000. Most projects take two to five weeks once materials are on site and permits are approved. If you’re planning a remodel on the island, the first call is the hardest part. Call Mason Remodeling at (803) 680-2547 and you’ll get a real person, a straight answer on pricing, and a written quote before any work starts.
Key Biscayne homes are not mainland Miami homes. The salt air, the humidity, the high water table, the condominium rules along Crandon Boulevard, the older single-family stock off Harbor Drive and Ridgewood Road. We know these homes because we’ve torn into enough of them to know exactly what hides behind the tile. Local expertise here is not a marketing line. It’s the difference between a bathroom that lasts fifteen years and one that fails the first time the summer rains roll in and the slab stays damp for weeks.
Why Mason Remodeling Is Key Biscayne’s Preferred Bathroom Remodeling Company
We do not ask you to take our word for it. We ask you to check what your neighbors on Key Biscayne say. Homeowners on Sunrise Drive, Gramercy Park, and the oceanfront towers along Ocean Drive have called us for full bathroom gut-renovations, tub-to-shower conversions, and small guest-bath refreshes, and they’ve said the same thing: the crew showed up exactly as described, the price did not move, and the work got done when we said it would. That’s not a badge we hang on the wall. It’s the standard every job gets held to.
Every crew member who walks through your door on Key Biscayne is background-checked, identity-verified, and introduced to you by name and photo before the visit. You’ll see a photo ID badge at the door, and the person standing there will match the photo you were sent. We call this The Threshold Standard, and it has been how we operate since 2004 as part of the Threshold Group family of home-service companies. It applies on every project, from a $5,000 vanity replacement to a $28,000 full master bath.
You will also get a written price before any tool is unpacked. Not a verbal range. Not an estimate that grows on the final invoice. A line-item price. And when the job is done, you’ll get a written guarantee that spells out exactly what’s covered and for how long: 365 days from the completion date. If something is not right within that year, we make it right at no cost. That is our 365-Day Done Right Promise.
Styles & brands we work with
Bathroom Remodeling Contractor in Key Biscayne
As a Bathroom Remodeling Contractor serving Key Biscayne, our job starts well before demolition. We scope the project against the island’s specific conditions: slab moisture, venting, existing plumbing rough-ins, and the particular building codes that govern barrier island construction. A Key Biscayne remodel is not a copy of a Coral Gables remodel moved east. The water table changes what’s underneath your floor, and the salt air changes what hardware we recommend on exposed fixtures.
A full bathroom remodel in Key Biscayne runs $9,000 – $28,000. That includes demolition, rough-in plumbing and electrical where needed, waterproofing, tile, vanity, fixtures, and finish work. What moves the number within that range is the size of the room, whether you’re moving plumbing, the grade of tile and fixtures you pick, and what we find when the walls come down.
Moisture Testing Before Anything Else
Because Key Biscayne sits on a barrier island with a high water table, bathroom remodels here often expose damp slab edges. We run moisture readings on the slab before any new subfloor or tile goes down. Skipping this step is the most common reason new tile fails within a year on the island.
Written Pricing on Your Actual Finishes
We write your price after you pick your actual materials, not after we guess. KraftMaid cabinetry. Cambria or Silestone countertops. Moen or Kohler fixtures. That means fewer change orders and no surprise line items at the end.
Walk In Shower in Key Biscayne
A Walk In Shower in Key Biscayne is one of the highest-value changes you can make to a bathroom, and it runs $4,500 – $12,000 depending on size, glass, and tile. Most Key Biscayne homeowners make the switch when a tub goes unused, when the existing shower pan leaks, or when a family member needs a curbless entry that a tub simply can’t offer. The work includes demolition of the old tub or shower, waterproofing the enclosure, new valve and drain, tile or solid-surface walls, and usually a frameless glass surround.
Curbless Entries and Barrier Island Slabs
On a slab home, a curbless walk-in shower means cutting into the concrete to recess the pan. That is real structural work, and on Key Biscayne it also means verifying the slab is dry and the existing drain can handle the new configuration. We do that check early, before the tile order goes in.
Frameless Glass and Salt Air Hardware
Key Biscayne’s salt-laden air is hard on cheap plated hardware. We spec shower trims and glass hardware that can handle the coastal environment. Not everything sold at the big box stores is rated for it, and we’ll tell you that plainly before you spend.
Trusted Brands We Service in Key Biscayne
We work with specification-grade brands that hold up in Key Biscayne’s humid, salt-exposed homes. Homeowners here regularly choose KraftMaid or Wellborn cabinetry, Cambria or Silestone surfaces, and Kohler or Moen fixtures. On projects where a home calls for it, we also work with specialized product lines like Sakrete for slab repair and leveling products that handle the island’s moisture conditions. Because we spec these products daily for Key Biscayne bathrooms, we can move on ordering quickly, hold delivery timelines, and avoid the “that fixture is backordered eight weeks” conversation that stalls so many remodels.
See the difference
Before
After
Before
After
Before
AfterCommon Bathroom Remodeling Problems We See in Key Biscayne Homes
- Damp slab edges under old tile. On the low-lying parts of the island, the slab stays damp longer than most people realize. If we don’t test it and treat it, the new floor fails within a year. We test every time.
- Cast-iron drain lines at the end of their life. Many Key Biscayne homes built in the 70s and 80s still have original cast iron. When we open the floor to move a shower drain, we often find scale and corrosion that would have failed within a few years anyway. Better to see it while the floor is open.
- Second-floor bathrooms in oceanfront condos with strict plumbing rules. Buildings along Crandon Boulevard and Ocean Drive have very specific rules about drain reroutes and waterproofing. We coordinate with the association early so permits don’t stall.
- Allowance confusion that blows the budget. We see too many quotes from mainland contractors where the number assumes builder-grade fixtures and the homeowner picks something nicer later. Our written quote reflects what you actually picked. Before we start.
Pricing for Bathroom Remodeling in Key Biscayne, FL
Here’s what a Key Biscayne bathroom remodel actually costs, in writing, based on the scopes we price most often on the island.
| Scope | Key Biscayne Price Range |
|---|---|
| Bathroom Remodel | $9,000 – $28,000 |
| Small Bathroom Remodel | $5,000 – $12,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Bathroom Vanity Installation | $800 – $3,000 |
What moves your number: the size of the room, whether plumbing moves, the tile and glass you pick, and what the moisture test reveals. You’ll know all of it before you commit. Call (803) 680-2547 for a free, itemized estimate on your Key Biscayne bathroom. No allowances you didn’t pick, no “we’ll figure it out later.”
We Also Serve Cities Near Key Biscayne
Mason Remodeling handles Bathroom Remodeling projects throughout the island and the wider South Florida coast. In addition to Key Biscayne, our crews take on bathroom remodels in Miami Beach, Miami, Coral Gables, and Hialeah. If you’re just off the causeway or a few miles west, the same written-price standard and the same Threshold Verified crews apply. See our Key Biscayne page for island-specific details.
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 About Bathroom Remodeling in Key Biscayne
No, not always, but most full remodels and walk-in shower conversions do. If you’re moving plumbing, altering the drain, or changing the waterproofing envelope, the Village of Key Biscayne building department will want a permit and an inspection. We pull the permits, schedule the inspections, and do not close up any wall until the rough-in passes. It is the only way we work. Call (803) 680-2547 and we’ll tell you exactly what your scope requires before you sign anything.
The biggest reason is moisture work. On Key Biscayne, we test the slab and often install additional waterproofing or a moisture barrier before tile goes down, because the high water table makes it necessary. A mainland contractor may quote the same visual scope without that work, and the price looks cheaper until the floor fails. The second reason is access and parking. High-rise jobs along Crandon Boulevard involve service elevators, scheduled load-in, and longer material runs. That’s real time and real cost. We’ll show you exactly what’s in your number, line by line. Call (803) 680-2547 for an itemized comparison.
We write the price after you pick your actual finishes, not before. You’ll choose your KraftMaid or Wellborn cabinets, your Cambria or Silestone top, your Moen or Kohler fixtures, and the exact tile before we finalize the number. That removes allowance games and change orders. The other piece is discovering problems early. We open the floor and run the moisture test in the first days of the job, so any needed slab or drain repair shows up while there’s still time to plan around it. Call (803) 680-2547 for a written quote built on your real selections.
Most Key Biscayne bathroom remodels take two to five weeks from the first day of demolition to final inspection. The range depends on scope: a tub-to-shower conversion in a small guest bath can finish in about two weeks, while a full master bath with a curbless walk-in shower and custom glass can take five. Permitting adds time up front, usually one to three weeks depending on the Village’s review queue, and we submit drawings early so it doesn’t stretch the schedule. Call (803) 680-2547 and we’ll give you a realistic calendar for your exact scope.
You’ll pick from specification-grade lines we stock and order daily: KraftMaid and Wellborn for cabinetry, Cambria, Silestone, and Caesarstone for surfaces, and Kohler, Moen, Toto, and Grohe for fixtures and trim. On Key Biscayne, we steer you toward finishes and hardware that hold up to the salt air and humidity, because the wrong plated metal will show corrosion within two or three years. We’ll show you options at your first design meeting. Call (803) 680-2547 to set it up.
On a canal-front home off Harbor Drive, we tore out a 1980s bathroom and found the subfloor spongy around the toilet flange. After moisture readings and drying, we rebuilt the rough-in, set a Wellborn vanity with a Silestone top, and installed a Kohler shower trim, then walked the punch list with the homeowners before final inspection sign-off. That’s how a Key Biscayne remodel should go: found, fixed, documented, and done.
If you’re ready to price a bathroom remodel on Key Biscayne, call Mason Remodeling at (803) 680-2547. You’ll get a written quote, a verified crew, and a 365-day written guarantee. No surprises. Just the work, done right.
Written by Isaac Pruett, Owner at Mason Remodeling, serving Key Biscayne as part of the Threshold Group since 2004.
