Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Bathroom Remodeling Across Bay Harbor Islands
A full bathroom remodel in Bay Harbor Islands typically runs $9,000 to $28,000, with smaller baths landing between $5,000 and $12,000. Most projects take two to four weeks once permits clear and materials arrive. The biggest variable here is not the tile you pick. It is what hides inside the walls of a 60-year-old island home, and whether the right materials were specified for salt air, floodplain codes, and Miami-Dade County’s high-velocity hurricane zone. You can reach us at (850) 780-8123 any time for a straight answer on cost, timeline, and what your specific house will need.
We know these islands not as a sales territory but as a building environment. Bay Harbor Islands sits on artificially filled land between Biscayne Bay and the Atlantic. That one fact changes nearly every decision inside a bathroom. The fill means deep-pile foundation verification before any work that touches the footprint. The salt air means fasteners and rough-in valves that would last 40 years inland can fail in half that time here. And the Town of Bay Harbor Islands and Miami-Dade County both review nearly every permit, which means product approvals have to be locked down before the first tile is ordered. We plan for all of it.
Why Mason Remodeling Co Miami Is Bay Harbor Islands’s Preferred Bathroom Remodeling Company
Mason Remodeling Co Miami has served Bay Harbor Islands since our founding in 2004 as part of the Threshold Group family of home-service companies. Homeowners here keep calling us back because we do something most remodelers will not: we put a written price in front of you before any work starts. Not a verbal ballpark. Not an estimate that grows. A line-item price, on paper, before a single tool comes off the truck. That standard is not a promotion. It is how every project runs.
You also get the Threshold Standard on every crew visit. Every technician is background-checked and identity-verified. Before anyone arrives, you receive that person’s name and photo. At your door, they show a photo ID badge and arrive in a clean marked uniform. If you are home alone, or you have young kids, or you simply do not open the door to strangers, that process is the difference between a project you dread and one you can schedule without worry. Isaac Pruett leads our team, and he holds every crew member to that standard.
Our Bay Harbor Islands customers tell us the same thing: the live phone answer matters almost as much as the workmanship. When you call (850) 780-8123, a live person picks up. No call tree. No voicemail loop. That is true at 2:00 p.m. and 2:00 a.m., weekends and holidays included.
Styles & brands we work with
Bathroom Remodeling Contractor in Bay Harbor Islands
A Bathroom Remodeling Contractor in Bay Harbor Islands does far more than swap tile and set a vanity. The job here starts with what is behind the walls: galvanized supply lines, cast-iron drains, and original concrete slabs that have spent six decades absorbing salt-laden moisture. A full remodel in this town usually means re-piping, subfloor repair, waterproofing, and ventilation upgrades before the finish work begins. The total price for that complete scope runs $9,000 to $28,000 in Bay Harbor Islands, depending on the size of the bath and what the demo reveals. And demo always reveals something.
Subfloor and rough-in replacement
On older island homes, the subfloor is frequently the first casualty. Original concrete slabs poured without moisture barriers wick standing water up from the ground, which debonds tile and rots wood subfloor sections near tubs and toilets. We replace rotted sections with marine-grade plywood and add a sealed moisture barrier before any finish material goes down. When we see cast-iron drain lines that have corroded thin from decades of salt air, we re-pipe with PVC before installing the new tub or shower base.
Permit-ready material specification
Nearly every bath remodel here requires both a Town of Bay Harbor Islands review and Miami-Dade County product approvals. That means the shower glass, the water heater, the exhaust fan, and even certain tile-setting materials must carry HVHZ product approval numbers. We spec all of it up front, so the permit package moves without a stop-and-wait cycle. If a homeowner picks a fixture online without checking county approval status, it can hold up inspection for weeks. We do not let that happen.
Walk In Shower in Bay Harbor Islands
A Walk In Shower in Bay Harbor Islands costs $4,500 to $12,000 as a standalone installation, and it is the single most requested bathroom upgrade we build on these islands. The appeal makes sense. A curbless, barrier-free shower is easier to enter as you age, opens up a small mid-century bath visually, and eliminates a tub most owners never use. But on artificially filled land with salt-laden humidity, it has to be built differently than it would inland.
Curbless pan and moisture control
The biggest mistake we see in Bay Harbor Islands shower remodels is a curbless pan installed over an original slab without a bonded waterproof membrane. Within a few years, the slab wicks moisture upward, efflorescence blooms through the grout, and tiles pop loose. We install a full waterproof system, typically Schluter Kerdi, from pan to curb to niche, with sealed seams and proper slope. The result is a shower that stays dry beneath the tile, not just on top of it.
Frameless glass near the water
Here is a local fact most showrooms will not tell you: standard shower glass does not meet Miami-Dade HVHZ impact requirements. If your shower is on an exterior wall or near a window, the enclosure may need impact-rated glass to pass inspection. We coordinate that with our glass supplier before framing, so you are not reordering panels at the eleventh hour. Moen and Delta fixtures with stainless rough-in valves are our standard spec here, because plated brass bodies corrode fast in salt air.
Trusted Brands We Service in Bay Harbor Islands
We work with specification-grade materials that hold up to coastal conditions, and we keep the brands our Bay Harbor Islands customers ask for most. That includes Delta and Moen for faucets and shower valves, with stainless or PVD-finished rough-ins that resist salt corrosion far better than standard brass. For waterproofing, we spec Schluter systems, which include the Schluter strip, the metal trim that seals the edge where tile meets flooring and keeps water from creeping into the wall assembly. American Standard tubs and Toto toilets round out the most common selections. Because scheduling and dispatch are coordinated from our South Florida office, we can pull stock quickly for island projects and avoid the two-week lead times that plague special orders. If you are deciding between brands, call (850) 780-8123 and we will walk you through what holds up here, not just what looks good in a catalog.
See the difference
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After
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After
Before
AfterCommon Bathroom Remodeling Problems We See in Bay Harbor Islands Homes
- Corroded galvanized supply lines and cast-iron drains. Salt-laden air from Biscayne Bay accelerates corrosion on standard pipe materials. The same lines that might last 50 years in Doral or Miami Lakes can fail here in under 20. When we open a wall, rusted galvanized is the most common surprise.
- Slab wicking and tile debonding. Original 1950s and 1960s slabs were poured without modern vapor barriers. Standing water from curbless showers or freestanding tubs wicks into the concrete, pushing efflorescence through grout joints and loosening tile. Fixing it requires removing the slab section and installing a proper moisture barrier, not just re-grouting.
- Undersized exhaust fans and chronic condensation. Humid, salt-heavy air overwhelms builder-grade bath fans. Walls and ceilings stay damp after every shower, and mold grows behind vanities and inside niches even when visible tile looks clean. We spec fans sized for the room’s cubic feet plus the coastal humidity load, and we vent them to the exterior, never into the attic.
- Non-impact-rated shower glass failing inspection. The HVHZ designation means exterior-exposure glass must carry a Miami-Dade product approval. Standard enclosures ordered from big-box stores get flagged at inspection, which stalls the project. We only spec impact-rated glass where code requires it.
Pricing for Bathroom Remodeling in Bay Harbor Islands, FL
| Service | Price Range in Bay Harbor Islands |
|---|---|
| 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 the number is almost always what demo reveals. Rotted subfloor, corroded pipes, and non-code glass all add scope. That is why we give you a written price after a site visit, not a guess over the phone. Call (850) 780-8123 to schedule a free estimate, and you will get a line-item number you can actually plan around.
We Also Serve Cities Near Bay Harbor Islands
Beyond Bay Harbor Islands, our crews serve Miami, Miami Beach, Doral, and Miami Lakes. If you are comparing contractors across the county, read our full Bathroom Remodeling service page for pricing and process details. Whether your project is an island teardown-level remodel or a condo vanity swap, the same written-price standard applies. See our city page for Bay Harbor Islands coverage details.
Serving Bay Harbor Islands, FL - Our Local Coverage Area
We’re based in the Bay Harbor Islands 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 Bay Harbor Islands
Yes. Nearly every bathroom remodel in Bay Harbor Islands requires both a Town of Bay Harbor Islands permit review and Miami-Dade County product approvals, especially for anything touching plumbing, electrical, structural, or exterior openings. We pull both permits on every project, and our material specs carry the HVHZ product approval numbers inspectors look for. Call (850) 780-8123 and we will tell you exactly which permits your specific scope will trigger.
Most original island homes sit on concrete slabs poured over filled land without modern vapor barriers, so ground moisture and slow leaks rot the wood subfloor sections and debond tile. Once we open the floor, we usually find rot or wicking beneath the tub and toilet. We replace damaged sections with marine-grade plywood and install a sealed moisture barrier before tile goes down. It adds a day or two, and skipping it means redoing the floor in a few years.
If the shower is on an exterior wall or near a window, Miami-Dade HVHZ code requires impact-rated glass with a county product approval. Standard enclosures without that stamp get flagged at inspection. We confirm the rating requirement during the site visit and spec the right glass before framing starts, so the project does not stall at final inspection.
In Bay Harbor Islands, a typical allowance covers the finish surfaces: tile, vanity, countertop, faucet, shower valve, and lighting. It does not cover the rough-in work hiding behind the walls, which is often the more expensive part on older island homes. That is why our written price separates allowances from labor and rough-in line items, so you can see exactly where your $9,000 to $28,000 is going.
We prevent mold by controlling moisture at three points: a sealed waterproof membrane under all tile and shower pans, a properly sized exhaust fan vented to the exterior, and corrosion-resistant rough-in valves with sealed trim plates. Artificially filled land holds ground moisture, so slab sealing matters as much as ventilation. It is a system, not a single product. Call (850) 780-8123 for an exact quote, and we will walk you through what your specific bathroom needs.
Written by Isaac Pruett, Owner at Mason Remodeling Co Miami, serving Bay Harbor Islands since 2004.
