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Treasure Island packs a lot of housing into 1.55 miles of barrier island, and few of those bathrooms were designed for the way owners live today. The mid-century fisherman cottages and Key West-style homes at Sunset Beach still carry small original baths, fiberglass tub-and-shower combos, cultured-marble tops, and dated tile. The 1960s-to-1990s island subdivisions like Isle of Palms, Capri Isle, and The Herons sit on canals off Boca Ciega Bay, where decades of humidity and salt air work behind the tile. And the beachfront condos along Gulf Boulevard bring their own puzzle: association approvals, shared plumbing stacks, and slab construction that shapes what a shower can become.
CMK Construction has been transforming Treasure Island bathrooms for over two decades. We know the finishes that survive Florida humidity and Gulf salt air this close to the water, the tub-to-shower conversions and curbless entries that make a bath safer to age in, the logistics of working inside a condo building, and the permit process through the City of Treasure Island Building Department and Pinellas County. From a simple tub-to-shower conversion to a full spa master suite, we've done it all.
From a single shower update to a full primary suite, CMK handles every part of your bathroom remodel.
Custom tiled showers with frameless glass, niches, benches, and curbless wet rooms, every one waterproofed to outlast the house.
Explore shower options →
The most-requested bath project: swap the unused garden or alcove tub for an open, easy-access walk-in shower.
Learn about tub-to-shower conversions →
Create a spa-inspired focal point with a custom freestanding vanity designed for both beauty and functionality. Choose from premium cabinetry, quartz or natural stone countertops, designer hardware, and custom tile surrounds to transform an ordinary builder-grade bathroom into a luxurious retreat.
See bathtub options →
Relax in style with modern freestanding tubs, designer finishes, and custom layouts built for comfort and everyday luxury.
See our custom bathroom designs →
Custom wall and floor tile in porcelain and natural stone, all installed over the Schluter waterproofing system that protects against leaks and mold.
See our custom bathroom designs →
Curbless showers, barrier-free entries, comfort-height vanities, grab bars, and seating, built to be safe without feeling clinical.
See accessible bathroom remodels →From Gulf Boulevard condo baths and Isle of Palms master suites to accessible tub-to-shower conversions in Sunset Beach cottages, browse the bathrooms CMK has completed across Tampa Bay.
We've completed bathroom remodels throughout Treasure Island. Chances are, we've already worked on your street. Here's a look at the neighborhoods we serve most frequently.
Don't see your neighborhood? Call us. We serve all of Treasure Island (33706) plus Madeira Beach, St. Pete Beach, South Pasadena, Gulfport, Seminole, and St. Petersburg.
Bathrooms fail faster on a barrier island. Florida humidity works on every grout line and Gulf salt air corrodes low-grade fixtures, and the fisherman cottages and Key West-style homes at Sunset Beach have usually been sealed up behind original tile for decades. The canal homes in Isle of Palms, Capri Isle, and The Herons take on the same humidity from the Boca Ciega Bay side, while the beachfront condos along Gulf Boulevard add association approvals, shared plumbing stacks, and slab construction to the equation.
CMK plans for all of it before demo. On the island, that means finishes built for humidity and salt air, ventilation sized for the room, and waterproofing done right the first time while unused fiberglass tub-and-shower combos become walk-in showers. For the retirees and second-home owners staying put, it means curbless entries, grab bars, and bench seating that keep a bath usable for the long term. In the Gulf-front homes and canal properties around Paradise Island and Boca Ciega Shores, it usually means a full spa master: freestanding tub, oversized shower, double vanity.
Every bathroom CMK remodels gets Schluter waterproofing under every tile. It's a lifetime-warrantied membrane that many contractors skip, and it's the single biggest difference between a bathroom that lasts 30 years and one that starts leaking in 10, especially this close to the Gulf.
Treasure Island homeowners have choices. Here's why thousands of Tampa Bay families have chosen CMK, and why they refer us to their neighbors.
Lifetime-warranted waterproofing membrane installed under every tile we lay. No paint-on membranes, no skipped steps. Built to last 30+ years in Florida's humidity and salt air.
Named People's Choice Best of the Best every year from 2020 through 2025. Voted on by the Tampa Bay community, not a panel of judges.
After your project begins, you select every tile, vanity, fixture, and finish in person at a CMK Design Studio. Nothing is ordered until you approve it.
You get a dedicated, named project manager who visits your home and will communicate with you directly.
Licensed plumbing and Registered Electrical Contractor ER 13016498. Our plumbers and electricians are on every CMK bathroom remodel, start to finish.
Every CMK project is covered for one full year on all workmanship and materials. If something isn't right, we make it right. No arguments, no extra charge.
Real reviews from Treasure Island bathroom remodel clients across Gulf Boulevard, Sunset Beach, Boca Ciega Bay, Isle of Palms, Mansions by the Sea, and The Herons.
"Complete gut of the master bath in our Gulf Boulevard home. CMK pulled the City of Treasure Island permit, scheduled every inspection, and passed each one the first time. The oversized walk-in shower with frameless glass made the whole house feel newer."
"Tub-to-shower conversion in our Sunset Beach cottage, finished in four weeks like they promised. Our project manager Nick explained the Schluter waterproofing before any tile went up, and the new shower looks like it came out of a magazine."
"Our canal home off Boca Ciega Bay had a bathroom that had taken on years of Florida humidity. CMK rebuilt it with Schluter waterproofing, a floating vanity, and a curbless shower with a linear drain. The room feels twice as big and finally holds up to the salt air."
"Spa master bath in our Isle of Palms home. Freestanding tub, oversized walk-in shower, double vanity. The showroom visit made every selection easy, and the finished room is the best part of the house now."
"Gulf-front condo bathroom at Mansions by the Sea, full remodel. CMK handled the association approvals, worked around the building's plumbing stack, and recommended fixtures and finishes that hold up to the salt air off the Gulf. Frameless glass, new tile floor to ceiling, and not a single surprise on the invoice."
"We remodeled our bathroom in The Herons so we can stay in this house as we age. CMK converted the old tub to a curbless walk-in shower with a bench, anchored the grab bars into solid blocking, and it looks like a spa, not a hospital. Could not be happier."
Bathrooms are the single most common place a remodel goes wrong years after it finishes, almost always because of how the shower was waterproofed. These are the questions worth asking any Treasure Island contractor before signing a contract, with any company, not just CMK.
Why it matters: This is the single biggest difference between a 5-year bathroom and a 30-year bathroom. Treasure Island's Florida humidity and Gulf salt air destroy low-grade waterproofing.
Good answer: A name-brand sheet membrane system (Schluter-KERDI, Wedi, or equivalent) installed under every tile, with the manufacturer's lifetime warranty in writing.
Why it matters: Unlicensed contractors can void your homeowner's insurance and leave you personally liable for code violations.
Good answer: A state-issued CGC license number on every estimate, plus a CFC plumbing license on file. CMK is CGC 1516665 with plumbing under CFC 1430533.
Why it matters: Homeowner-pulled permits make you personally liable for code compliance, not the contractor.
Good answer: The contractor pulls every City of Treasure Island (or Pinellas County) permit, handles coastal and flood-zone review where it applies, and schedules every inspection at no extra charge.
Why it matters: Without a named project manager, you'll spend the build chasing updates from a salesperson who's already moved on.
Good answer: A named PM, a real person you can call, who visits the job multiple times per week and communicates daily.
Why it matters: "We stand behind our work" is not a warranty. Get it in writing, especially on waterproofing.
Good answer: A written warranty on workmanship and materials, plus a separate manufacturer warranty on the waterproofing membrane. CMK's Peace of Mind Warranty covers both.
Why it matters: Tile and stone look completely different in catalog photos than they do in real samples under real lighting.
Good answer: A real showroom where you handle tile samples, vanity finishes, fixtures, and shower glass before anything is ordered. The 4,000 sq ft CMK Design Studio on W. Hillsborough Ave is open to active clients.
Want to walk through these questions with us in your own home? Schedule a free in-home consultation →
CMK partners with leading home-improvement lenders to offer financing for Treasure Island bathroom remodels. Your project consultant will walk through current options during your free consultation.
Also remodeling your kitchen? Explore our Treasure Island kitchen remodeling →
Book your free, no-obligation estimate. We learn your goals, scope, and budget for your remodel.
We come to your home, measure the space precisely, and verify every structural detail before anything is ordered.
Walk our 4,000 sq ft CMK Design Studio and select every cabinet, countertop, tile, vanity, and fixture in person.
Sit down with your designer to finalize the layout, materials, finishes, and a timeline built around your home.
We pull every required permit, then assign the dedicated project manager who owns your build start to finish.
Construction begins, with daily communication through to your final walkthrough and a one-year Peace of Mind Warranty.
Answers to the questions Treasure Island homeowners ask us most often about timeline, permits, accessible bathrooms, waterproofing, and what's included.
Schedule a free in-home consultation. No obligation, no high-pressure pitch.
Free in-home estimate. No obligation.
