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Most Seffner homes are established single-family houses on large lots and acreage, built between the 1960s and 1990s, and their bathrooms still carry the finishes they were built with: cultured-marble vanity tops, fiberglass tub-and-shower combos no one uses, beige floor tile, and showers that have quietly aged behind the glass. The homes around Kingsway and Lakewood Ridge, the acreage properties near Williams Park and Lake Weeks, and the older ranch homes along Parsons Avenue and Kingsway Road all share the same story, a solid floor plan waiting for a bathroom that finally matches the rest of the house.
CMK Construction has been transforming Seffner bathrooms for over two decades. We know how to upgrade a dated builder-grade bath into a high-end spa primary suite, convert an unused fiberglass tub into an open walk-in shower, and design an accessible curbless shower for aging in place. We handle any deed-restriction paperwork and the Hillsborough County permits so you never have to. From a single shower update to a full primary 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 spa primary suites in Williams Park to tub-to-shower conversions in Kingsway and Lakewood Ridge, browse the bathrooms CMK has completed across Tampa Bay.
We've completed bathroom remodels throughout Seffner's neighborhoods. Chances are, we've already worked on your street. Here's a look at the communities we serve most frequently.
Don't see your neighborhood? Call us. We serve all of Seffner (33584) and surrounding areas.
Seffner grew up as an established, large-lot community east of Tampa, and its bathrooms were finished to match the era they were built in. The homes around Kingsway and Lakewood Ridge, the acreage properties near Williams Park and Lake Weeks, and the older ranch homes along Parsons Avenue and Kingsway Road all share the same dated baths: fiberglass tub-and-shower combos no one uses, cultured-marble tops, and tile that has not aged well in Florida humidity. The homes are excellent. The bathrooms are simply due for an upgrade.
CMK plans for all of it before demo. In the smaller homes, that often means converting an unused fiberglass tub into an open walk-in shower with a floating vanity and large-format tile that makes the room feel bigger. In the larger homes on acreage, it usually means a full spa primary suite: freestanding tub, oversized shower, double vanity, and high-end finishes throughout. And for long-time Seffner owners planning to stay, we design accessible, curbless walk-in showers for aging in place that look like a spa, not a hospital.
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 in Florida's relentless humidity.
Seffner 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 Seffner bathroom remodel clients across Kingsway, Lakewood Ridge, Hillside, Williams Park, Lake Weeks, and the Parsons Avenue area.
"We updated the primary bath in our Kingsway home and it is a completely different room. CMK worked cleanly in an older Seffner house, kept the dust down, and passed every inspection the first time. The walk-in shower with frameless glass made the whole primary suite feel new."
"Tub-to-shower conversion in our Lakewood Ridge home, 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. Their crew was respectful of our property the entire time."
"Our 1990s builder-grade bathroom in the Hillside area felt dated and cramped. CMK reconfigured the layout with a floating vanity and a curbless shower with a linear drain, and the room feels twice as big. Smart design, clean work, high-end finishes throughout."
"Spa primary bath in our established Williams Park home off Parsons Avenue. Freestanding tub, oversized walk-in shower, double vanity. The showroom made every selection easy, and the finished room is the best part of the house now."
"Full remodel of our Lake Weeks primary bath. CMK upgraded our tired builder-grade bath with high-end tile, frameless glass, and a new floating vanity. The Schluter waterproofing gives us real peace of mind in Florida humidity, and there was not a single surprise on the invoice."
"We remodeled our Seffner bathroom off Parsons Avenue so we can stay in this house as we age. CMK built 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 Seffner 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. Florida's relentless humidity destroys budget 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 Hillsborough County permit, handles neighborhood HOA paperwork 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 Seffner bathroom remodels. Your project consultant will walk through current options during your free consultation.
Also remodeling your kitchen? Explore our Seffner 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 Seffner homeowners ask us most often about timeline, permits, HOA approvals, waterproofing, and what's included.
Schedule a free in-home consultation. No obligation, no high-pressure pitch.
Free in-home estimate. No obligation.
