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
Bathroom remodeling in Key Biscayne typically runs $9,000 to $28,000 depending on the scope, and the island’s floodplain codes mean even a small job can involve elevation certificates and HOA reviews. If you’re searching for a contractor who understands that a barrier-island bathroom is not the same as a mainland bathroom, you’re in the right place. Our Bathroom Remodeling team serves homeowners across Key Biscayne, from Crandon Boulevard condos to the waterfront homes near Mashta Island. We coordinate scheduling from our Miami office and dispatch crews to Key Biscayne daily. Call (850) 988-7559 to schedule your free estimate.
Why Penhallow Remodeling Miami Is Key Biscayne’s Preferred Bathroom Remodeling Company
We know what happens behind the walls of a Key Biscayne bathroom. Older condos along Crandon Boulevard and newer master-planned communities each bring their own set of rules, and we’ve worked through enough of both to know exactly what the inspector will flag before we open a single wall. Trevor Nash leads our team with a straightforward approach: written pricing before any demo starts, real arrival windows, and a 365-Day Done Right Promise that says if something fails inside a year, we come back and fix it at no charge. That promise is in writing on every project.
Homeowners in Key Biscayne have told us the same stories over and over. A contractor gave a verbal estimate that ballooned after demolition. A tile job lasted eight months before grout started cracking. A walk-in shower was roughed in below Base Flood Elevation and the entire plumbing stack had to be redone. We operate under the Kingswell standard, established in 2004: say the price before the work, show up in the window we gave, leave the place cleaner than we found it. Every technician who walks into your home is background-checked and in uniform. You’ll know exactly who you’re letting through the door.
We also answer the phone. A live person picks up 24 hours a day, every day. No voicemail maze, no call center script. When a Key Biscayne homeowner calls at 7 a.m. with a question about a rough-in, a real person answers.
Styles & brands we work with
Walk In Shower in Key Biscayne
A Walk In Shower in Key Biscayne is one of the most common upgrades we handle, and on this island it costs between $4,500 and $12,000 depending on waterproofing scope, glass enclosure style, and whether the subfloor needs sistering to support a modern membrane system. Barrier-island code requires showers in elevated homes to sit above Base Flood Elevation, which sometimes means reworking the drain line before any tile goes up. We install Kohler and Moen fixtures as standard, and many clients pair a walk-in shower with Cambria quartz shower benches for a surface that holds up against salt-laden humidity.
Waterproofing and Floodplain Considerations
Key Biscayne’s humidity is relentless. Standard drywall behind tile, without a proper moisture barrier, molds within a year. We use cement board substrate (the moisture-resistant layer behind your tile) and liquid-applied waterproofing membranes that pass the island’s HOA moisture audits. If the bathroom sits in an elevated home, we verify the elevation certificate before rough-in so the drain never ends up below Base Flood Elevation.
Glass and Hardware That Handle Salt Air
Frameless glass enclosures look clean, but cheap hardware corrodes fast in salt spray. We spec marine-grade stainless hinges and clips, then seal the glass edges properly so wind-driven rain during a storm cannot push water behind the shower curb. That detail matters on a barrier island. Call (850) 988-7559 to talk through what your specific floor plan can handle.
Bathroom Remodeling Companies in Key Biscayne
Choosing between Bathroom Remodeling Companies in Key Biscayne comes down to one question: does the contractor understand floodplain construction? A full bathroom remodel here runs $9,000 to $28,000. The price hinges on whether you’re in an older 1950s-1970s concrete condo building or a newer elevated home on pilings, because the plumbing and subfloor work below the tile are completely different jobs. We’ve completed remodels in both, including a primary bathroom near Crandon Boulevard where the original builder-grade shower pan failed wind-driven rain tests. Our crew pulled the subfloor, sistered the joists to handle the new waterproofing membrane, and installed a Kohler walk-in shower with a linear drain that doubles as a floodproofing line, then coordinated the inspection sign-off with the HOA’s architectural committee before closing the walls.
HOA and Architectural Review
Many newer Key Biscayne communities require board sign-off on waterproofing details before inspections, especially when swapping a tub for a walk-in shower. We handle that paperwork. The 365-Day Done Right Promise covers every part of the work, so if a shower pan or vanity install fails inside a year, we return and fix it free.
Written Pricing Before Demo Day
We hand you a written number before any work starts, not an estimate range and not a verbal ballpark. The number on day one is the number on the invoice. That’s the Kingswell Way, and it’s been the standard since 2004. Each Penhallow location is independently owned and operated as part of the Kingswell family of companies.
Trusted Brands We Service in Key Biscayne
We build with materials that carry their own warranties alongside ours. For Key Biscayne’s coastal exposure, we recommend impact-rated products from CGI and PGT where windows or structural openings are involved, and Boral products for any exterior trim that touches the bathroom shell. Inside the bathroom, Cambria quartz, Kohler fixtures, and Moen faucets are our workhorses because they hold up over years of humidity and daily use. You can also expect brands like Wellborn and KraftMaid for vanities, Silestone and Caesarstone for countertops, and Toto or Grohe when you want something specific. We keep a local parts inventory for Key Biscayne jobs, which means fewer delays when an inspector wants a material specification sheet on short notice.
See the difference
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AfterCommon Bathroom Remodeling Problems We See in Key Biscayne Homes
- Salt-laden humidity wrecking drywall. Bathrooms on the island need moisture barriers and cement board behind tile, not standard drywall. We’ve opened walls a year after a “budget” remodel where the drywall crumbled like wet cardboard.
- Rough-ins below Base Flood Elevation. If the fixture drain sits below BFE, the entire rough-in fails inspection and must be redone. We verify the elevation certificate before any plumbing work starts.
- Failed wind-driven rain tests on shower pans. Key Biscayne storms push water horizontally, not just from above. Standard shower pan installations that work in Miami can leak here. We build to the stricter barrier-island standard.
- HOA change order rejections. Swapping a tub to a walk-in shower in a newer community often requires board sign-off on waterproofing details. Skipping that step stalls the job at inspection. We handle the review before we start.
Pricing for Bathroom Remodeling in Key Biscayne, FL
Expect a full bathroom remodel in Key Biscayne to land between $9,000 and $28,000. The lower end covers a compact condo bath with a standard tub, a new vanity, and simple tile work. The upper end is a full primary bathroom in an elevated home: custom walk-in shower with frameless glass, new subfloor, plumbing stack rework, Cambria countertops, and upgraded fixtures. Walk-in shower installation alone runs $4,500 to $12,000, including waterproofing and glass. Here’s how the main line items break down:
| Project | Key Biscayne Price Range |
|---|---|
| Bathroom Remodel | $9,000 – $28,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
Moisture-resistant materials add roughly 12-18% to the material budget on a Key Biscayne job, because standard drywall and builder-grade membranes simply do not pass inspection here. That is not an upsell; it is the cost of building something that lasts through hurricane season. Call (850) 988-7559 for a written, line-item quote. Estimates are free, and the number we give you is the number you pay.
We Also Serve Cities Near Key Biscayne
Our crews work throughout South Florida, so if you live just off the island, we can help. We serve Bathroom Remodeling in Key Biscayne and the surrounding communities of Miami, Hialeah, and North Miami Beach, with the same written pricing and 365-Day Done Right Promise on every project.
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
A vanity swap alone does not trigger wind-load review if you are not opening walls or moving plumbing, but if the vanity sits against an exterior wall with a window, the inspector may still want to see the window’s current wind-mitigation certificate. Call (850) 988-7559 and we’ll tell you what your specific building requires before you buy the vanity.
Not without checking the warranty language first. Many newer elevated homes on Key Biscayne carry limited structural warranties that stay intact only if the waterproofing and subfloor work is documented and inspected. We handle that documentation, and we’ve done tub-to-shower conversions on piling homes where the warranty stayed valid because the rough-in sat above BFE and the HOA signed off before close-up. Call (850) 988-7559 for specifics on your home.
They add roughly one to three weeks to the pre-construction phase. The HOA reviews waterproofing details, sometimes requests material specs, and must approve the change order before inspections. We submit early and walk the board’s committee through the plan so the demo day doesn’t stall waiting on a signature.
Budget 12-18% of the total material cost for cement board, waterproofing membranes, marine-grade hardware, and proper sealants. That typically adds $1,100 to $3,400 to a full bathroom remodel in Key Biscayne, depending on size. Cutting it to save money is the one corner that fails first in salt-laden humidity.
Because floodproofing does not stop at the exterior wall. In elevated homes, inspectors want proof that water inside a walk-in shower can drain properly during a flood event rather than pooling against the subfloor. We coordinate that sign-off as part of the rough-in inspection, before any tile is set. Call (850) 988-7559 for an exact quote, and we’ll walk you through the full inspection sequence.
Written by Trevor Nash, Owner at Penhallow Remodeling Miami, serving Key Biscayne homeowners with written pricing and the 365-Day Done Right Promise.
