Blog › October 2, 2026 · 8 min read

Bathroom Remodel in a Miami Condo vs a House: How to Plan

Two bathrooms can be the same size, use the same tile and need the same new vanity, and still be completely different projects. In South Florida, the biggest variable is often not the bathroom at all but the building around it. A unit in a Brickell or Sunny Isles tower answers to an association, a concrete slab and a service elevator schedule. A house in Kendall, Hollywood or Coral Springs answers to the city building department and to whatever previous owners left behind the walls. This guide walks through how planning differs between a condo and a house, what both have in common in Miami's climate, and how to get an accurate estimate without endless back-and-forth.

Why the building type changes the whole plan

A bathroom remodel has the same basic steps everywhere: decide the scope, choose materials, demolish, fix what you find, waterproof, tile, install fixtures and finish. What changes between a condo and a house is who has a say, what you are allowed to touch and how materials and debris get in and out.

In a condo, you own the inside of your unit, but the structure, the shared pipes and the common areas usually belong to the association. In a house, you control almost everything, but you also inherit every shortcut and every aging pipe in the walls. Knowing which situation you are in, and planning for its specific constraints, is the difference between a remodel that runs smoothly and one that stalls halfway.

Condo remodels: association approval comes first

Before anyone picks up a hammer in a condo, read the association's renovation or alteration rules. Many associations require a written application, a description of the scope, a certificate of insurance from the contractor, and sometimes drawings or product information for flooring. Approval can take a while, so start the paperwork while you are still choosing finishes, not after.

Expect rules about logistics as well. Common ones include:

• Working hours on weekdays only, with quiet periods and no noisy work on weekends or holidays
• Service elevator reservations for every delivery and every debris run
• Protection for hallways, elevators and lobby floors
• Debris that must leave the building the same day instead of going into building dumpsters
• Water shutoffs coordinated with building management
• Sound-rated underlayment under new hard flooring, which many associations require so that neighbors below are not bothered

What lies under a condo floor: slabs, risers and sound

Most South Florida condo towers are built with concrete floor slabs, and that shapes what is realistic. In a house on a slab, a drain can be moved by cutting the concrete under a permit. In a high-rise, the drain lines often run through or below the slab into the unit underneath, and some towers use post-tensioned slabs with steel cables inside. Many associations prohibit cutting or coring the slab without an engineer's review and their written approval.

That has practical consequences. A curbless, walk-in shower that sits flush with the bathroom floor usually needs the drain to sit lower, which is simple in some buildings and close to impossible in others. Moving a toilet across the room may not be allowed at all. Keeping the tub, shower and toilet drains where they are is the fastest path to approval in most towers.

Shared risers matter too. Supply and drain risers often serve stacks of units, so shutoffs go through the building, and leaks you cause can reach your neighbors.

Houses: permits, older plumbing and what hides behind the walls

In a single-family house there is usually no association to approve interior work, but the building department still has a say. In Miami-Dade, Broward and Palm Beach counties, moving plumbing, adding or changing electrical circuits, or altering walls generally requires a building permit from the city, or from the county for unincorporated addresses. Cosmetic work like replacing tile or swapping a vanity in the same spot is treated differently, and the details vary by municipality, so confirm before you start.

Older houses bring their own surprises. Homes from the middle of the last century often have cast-iron drains or galvanized supply lines that are near the end of their life. Once the shower wall is open, replacing those sections is usually far easier than doing it later. Terrazzo is another common find under carpet or old tile in mid-century houses; some owners choose to restore it rather than cover it again.

Concrete-block exterior walls are standard here, and they behave differently from wood framing. Plumbing on an exterior wall may run in chases or furring strips, and an exhaust fan vent may need to go through the roof or a soffit rather than straight out. Planned early, none of this is a problem.

Townhomes and HOA communities: the middle ground

Townhomes, villas and houses in planned communities fall between the two. Interior bathroom work usually needs less review from the HOA than a new roof or exterior paint, but many communities still regulate contractor access, parking, working hours and dumpster placement. In low-rise condo and 55-plus communities, you may face both a permit from the city and an approval from the association.

The safe approach is to ask the management office for its rules in writing before you order materials. A short email asking whether interior remodeling needs an application, what insurance documents they want and where a dumpster or trailer can go will answer most questions.

Materials that survive humidity and salt air

Whether you live in a tower on the bay or a house inland, the climate is the same: humid all year, with salt air near the coast. Bathrooms fail here in predictable ways, and most of them can be designed out.

Ventilation comes first. An exhaust fan that is too small, too loud to use, or vented into the attic instead of outside leaves moisture in the room, and that moisture ends up as mildew on the ceiling and in the grout. In condos, the fan often ties into a shared exhaust duct, so the replacement has to work with what the building provides.

Then come the materials:

• A continuous waterproofing membrane behind and under shower tile, not cement board alone
• Porcelain tile for floors and shower walls, since it absorbs very little water
• Mildew-resistant grout, and flexible silicone at corners, changes of plane and around the tub
• Vanities with solid wood or moisture-resistant cores rather than bare particleboard
• Fixtures, hinges and accessories with finishes rated for humid or coastal use, since salt air pits low-grade plating and rusts cheap screws

Hurricane season and material lead times

Atlantic hurricane season runs from June 1 to November 30. That does not mean bathrooms cannot be remodeled in summer or fall, but it does change the planning. A storm watch can stop work while sites are secured, condo buildings may restrict elevator use or contractor access during preparations, and supplies can slow down after a storm.

The most useful habit is to order long-lead items early: special-order tile, custom vanities and anything shipped from overseas. Glass shower enclosures cannot be measured until the tile is finished, so they always come near the end. When a storm is in the forecast, the priority is to avoid leaving a house with no working toilet or an open shower wall, especially in homes with a single bathroom.

How to prepare photos and measurements for an estimate

You can get a useful first estimate without anyone visiting, as long as the photos show the whole room and the measurements are close. At Gold Hands, estimates are built from what customers send by phone, text or WhatsApp, and the better the photos, the fewer surprises later. Send:

• A wide photo of each wall, taken from the doorway and from the opposite corner
• Close-ups of any damage: cracked tile, soft spots in the floor, stains on the ceiling, rust on fixtures
• The floor length and width, the ceiling height, and the tub or shower opening dimensions
• A photo of the exhaust fan and of the area under the vanity with the doors open
• For condos, the association's renovation rules or a note on which building you are in
• A short list of what you want: shower instead of tub, new tile, different vanity size, grab bars

Mistakes to avoid

Most problems on bathroom remodels come from a few decisions made too early or too late. In condos, the classic mistake is ordering tile and a vanity before the association approves the scope, then learning that the floor needs a specific underlayment or that the drain cannot move. In houses, it is skipping the permit on work that needs one, which can come back during an insurance claim or a sale.

Other common ones: choosing a polished natural stone for a shower floor without thinking about slip resistance and sealing; picking a vanity that is a little too deep for the room and blocks the door; keeping an undersized fan because it still turns on; and leaving out a niche or grab bar blocking, which is easy while the wall is open and difficult afterward. If you are working with Gold Hands, we will raise these points while there is still time to change the plan.

Frequently Asked Questions

Do I need my condo association's approval to remodel a bathroom?

In most South Florida condo buildings, yes, at least for anything beyond a fixture swap. Many associations require an application, a contractor's certificate of insurance and a written scope, and some ask for flooring specifications. Read your association's renovation rules first and submit the paperwork while you are still choosing finishes.

Can I move my toilet or shower drain in a high-rise condo?

Sometimes, but it is the hardest change to get approved. Drain lines often run through or below the concrete slab, and many associations will not allow cutting or coring the slab without an engineer's review. Keeping fixtures where they are is the simplest route. If a move is essential, it becomes permitted work that needs both the association and the building department.

Does a bathroom remodel in a house need a permit?

It depends on the scope and the city. Relocating plumbing, adding circuits or changing walls generally requires a building permit from the local building department. Replacing tile, a vanity or a toilet in the same location is often cosmetic, but rules vary across Miami-Dade, Broward and Palm Beach municipalities, so confirm before work starts.

What is the right exhaust fan for a Miami bathroom?

One that is sized for the room, quiet enough that people actually run it, and vented to the outside rather than into the attic. In condos, the fan often connects to a shared building duct, so the replacement must match what the building allows. Adding a timer or humidity switch helps make sure it runs long enough after showers.

Is it a bad idea to remodel during hurricane season?

No, but plan for it. Order special-order materials early, expect possible pauses when a storm watch is issued, and sequence the work so the bathroom can be closed up and usable quickly. In a home with only one bathroom, keep a working toilet available through the riskiest stages of the project.

Related guides

• Planning a Kitchen Remodel in South Florida: What to Know
• Choosing and Installing Tile That Survives Miami Humidity
• Miami Airbnb Turnover Maintenance Checklist for Hosts