A shower niche keeps your shampoo bottles off the floor and your shower looking clean. The standard size is 12 inches wide by 24 inches tall, built between studs. Simple concept. But getting it right in a Miami bathroom takes some planning, especially with our CBS block construction and year-round humidity.

This guide covers sizes, placement, design ideas, materials, and the installation details that matter most in South Florida.

What Is a Shower Niche?

A shower niche is a recessed shelf built directly into the shower wall. It sits flush with the tile surface, giving you storage space without anything sticking out into the shower.

It replaces those cheap plastic corner caddies that rust and fall off the wall. It replaces the wire hanging organizers that swing around and scratch your tile. A niche is permanent, built into the wall during construction or remodeling, and tiled to match or accent your shower.

Every well-planned bathroom remodel in Kendall includes at least one shower niche. It is one of those features that costs relatively little during construction but adds real daily convenience and resale appeal.

Standard Shower Niche Sizes and Placement

Getting the size and height right is the most important step. A niche that is too small, too high, or in the wrong wall creates more problems than it solves.

Single Niche

12 inches wide x 24 inches tall x 3.5 inches deep. This is the most common size. It fits neatly between standard wood studs spaced at 16 inches on center. The actual opening is 12 inches because you lose width to the studs on each side. It holds a few bottles on one shelf. Simple and clean.

Double Niche (Stacked)

12 inches wide x 36 inches tall. Same width as a single niche, but taller with a horizontal shelf dividing it into two compartments. The top section can hold taller bottles. The bottom section handles smaller items like razors and soap. This is the most popular option we install.

Wide Niche

24 inches wide or more. A wide niche spans two stud bays, which means you need to cut through a stud and install a header above the opening for structural support. More labor, more cost, but the result is a statement piece that stretches across a good portion of the wall. Great for large walk-in showers.

Height Placement

Place the bottom of the niche 48 to 60 inches from the shower floor. That puts it between chest and eye height for most adults. You should not have to bend down or reach above your head to grab a bottle.

For taller users or couples with a height difference, a stacked double niche works well because it covers a wider vertical range. If you are building a niche in a kids' bathroom, drop it lower, around 36 to 42 inches.

Location on the Wall

Interior walls are the best location for a shower niche. In Miami, exterior walls are almost always CBS construction (concrete block and stucco). You cannot simply cut a hole between studs in a concrete block wall the way you can in a standard wood-framed wall. That changes the entire installation approach.

Put the niche on an interior partition wall whenever possible. If an exterior wall is your only option, you will need to fur out the wall or use a pre-fabricated niche insert mounted to the surface. More on that below.

7 Shower Niche Design Ideas

1. Single Horizontal Niche With Accent Tile Border

The most classic look. One rectangular niche with a border of accent tile framing the opening. The border might be a pencil liner, a mosaic strip, or a contrasting color in the same format as your field tile. It creates a subtle frame that draws the eye without overwhelming the design. Works in any size bathroom.

2. Stacked Double Niche

Two compartments divided by a horizontal shelf, both tiled to match the surrounding wall. The shelf itself can be tile, natural stone, or even a solid surface material. This is the workhorse design. Practical, clean, and gives you enough room for two people's shower products without clutter.

3. Full-Width Horizontal Niche

A single long niche that runs most of the width of the shower wall at one consistent height. Typically 36 to 48 inches wide and only 8 to 12 inches tall. It creates a strong horizontal line that makes the shower feel wider. Best suited for large showers with at least 48 inches of uninterrupted wall space. Requires header framing since it spans multiple stud bays.

4. Corner Niche

Built at the junction where two shower walls meet. The niche wraps around the corner, giving you shelf space on two planes. It is trickier to waterproof and tile, but the result is unique and makes great use of corner space that would otherwise be wasted. Especially useful in smaller showers where wall space is limited.

5. Niche With Accent Tile Backing

The shower walls use one tile, and the inside of the niche uses a completely different tile. This is one of the most popular design moves right now. A white subway tile shower with a herringbone marble mosaic inside the niche, for example. Or a gray porcelain shower with a blue glass tile accent in the niche. The niche becomes a focal point, almost like a picture frame for your shower.

6. Niche With LED Lighting

A waterproof LED strip tucked along the top edge of the niche interior. The light washes down over the shelf and the bottles, creating a soft glow. It adds a spa-like feel to any shower and actually makes it easier to find what you need. Use warm white LEDs (2700K to 3000K) for the most natural look. The LED strip must be rated for wet locations, IP67 or higher.

7. Multiple Small Niches at Different Heights

Instead of one large niche, install two or three smaller niches at staggered heights along the wall. Each one might be 12 inches by 12 inches. This creates visual interest and lets each person have their own dedicated storage spot. It works especially well in showers used by multiple family members.

Material and Finish Options

The material choices inside and around your niche affect both the look and the long-term performance.

Same tile as the shower walls. The most seamless look. The niche blends into the wall and reads as one continuous surface. This is the easiest to execute and the most forgiving if your tile layout is not perfectly symmetrical.

Contrasting accent tile. A different tile inside the niche creates a focal point. Mosaics, natural stone, glass tile, and metallic tile are all popular choices. Just make sure the accent tile is rated for wet areas.

Natural stone slab shelf. A piece of marble, quartz, or granite used as the niche shelf instead of tile. It looks premium and eliminates grout lines on the horizontal surface where water sits. A popular choice for tile work projects in Palmetto Bay and across Miami-Dade.

Stainless steel trim edges. Metal edge profiles protect the tile edges at the niche opening. They prevent chipping and give a crisp, finished look. Available in brushed nickel, polished chrome, matte black, and brass finishes.

Schluter metal profiles. Schluter Jolly and Rondec profiles are the industry standard for tile edge finishing in niches. They come in a range of metals and finishes and create a clean, durable edge that holds up in wet environments for years.

Miami-Specific Installation Notes

Building a shower niche in Miami is not the same as building one in a wood-framed house in North Carolina. Our construction methods, climate, and building materials all create specific challenges.

CBS (Concrete Block) Walls

Most Miami-Dade homes built after the 1960s are CBS construction. The exterior walls are concrete block with a stucco finish. You cannot cut between studs because there are no studs. The wall is solid masonry.

If your shower is against an exterior wall, you have two options. First, you can fur out the wall with wood or metal framing, creating a cavity in front of the block where the niche can be recessed. This adds about 4 inches of depth to the wall but gives you a standard installation. Second, you can use a pre-fabricated foam niche insert (like Kerdi Board or GoBoard) that mounts to the surface of the block wall. The surrounding tile build-up hides the edges.

Interior partition walls in Miami homes are usually wood-framed or metal-stud framed, which allows a standard niche installation between studs.

Waterproofing Is Critical

This is not optional. In Miami's humidity, a shower niche is the single most likely point of failure for water intrusion in a tile shower. The niche has five interior surfaces, multiple corners, and edges where tile meets the surrounding wall. Every one of those transitions is a potential leak.

The entire niche must be waterproofed before any tile goes up. Use Schluter Kerdi membrane, Laticrete Hydro Ban, RedGard, or a similar waterproofing system. Cover every surface of the niche interior, wrap the membrane around the edges, and overlap it with the waterproofing on the surrounding shower walls. No gaps. No shortcuts.

At Broke & Fixed Home Solutions, we waterproof every niche the same way we waterproof the rest of the shower. Full membrane coverage. Tested before tiling. It takes extra time, but it prevents the kind of hidden water damage that costs thousands to fix later.

Slope the Niche Floor

The bottom of the niche must slope slightly toward the shower opening. A quarter-inch drop from back to front is enough. This ensures water that gets into the niche drains out into the shower instead of pooling on the shelf.

A flat niche floor holds standing water. Standing water leads to mildew, staining, and eventually grout breakdown. In Miami's climate, where humidity sits above 70 percent most of the year, standing water inside a niche will grow mold fast.

Use Large Format Tile on the Niche Bottom

The fewer grout lines on the niche floor, the better. Grout lines are where mildew grows. If possible, use a single piece of tile or natural stone for the niche shelf. If you are using smaller tile, use an epoxy grout that resists mold and staining better than standard cement grout.

Common Shower Niche Mistakes

Wrong height. A niche placed too high means you are reaching above your head with wet hands. Too low means bending over every time you grab your shampoo. Measure from the shower floor, not the subfloor. Account for the thickness of the shower pan and floor tile.

No waterproofing. Some installers skip waterproofing inside the niche because it is "small" or "not a big deal." It is a big deal. A leaking niche can dump water into the wall cavity for months before you notice damage. By then you are looking at mold remediation and a full shower tear-out.

Flat niche floor. If the niche shelf does not slope toward the shower, water sits on it. In Miami, that means green and black mildew within weeks. Always slope the bottom.

Placed on an exterior wall. In CBS construction, an exterior wall niche requires significant extra work. If someone cuts a hole in your concrete block exterior wall without proper planning, you have a structural and waterproofing problem.

Too small. A niche that only fits one small bottle is a wasted opportunity. Plan for what you actually use. Measure your tallest bottle and add two inches. If two people share the shower, a double niche is worth the small extra cost.

Grout instead of caulk at niche corners. The inside corners of a niche are change-of-plane joints. These joints move slightly with temperature and moisture changes. Grout will crack in these spots. Use color-matched caulk at every inside corner and where the niche meets the surrounding wall tile.

How Much Does a Shower Niche Cost?

Costs vary depending on the niche type, your tile selections, and whether the wall is wood-framed or CBS block.

Pre-fabricated niche insert (standard installation): $300 to $800. This includes the foam or plastic niche body and the labor to install and tile it. Good for straightforward installations on interior walls.

Custom tile niche: $500 to $1,500. Built from scratch with Kerdi board or cement board, fully waterproofed and tiled. This gives you complete control over size, shape, and shelf placement.

Wide or complex niche designs: $800 to $2,000 or more. Multi-bay niches, LED-lit niches, niches with natural stone shelves, or niches that require structural modifications like headers or wall furring all fall in this range.

These numbers include labor and materials for the niche itself. They do not include the cost of the surrounding shower tile work, which is part of the overall bathroom remodel budget.

FAQ

Can I add a shower niche to an existing tile shower?

Yes, but it requires cutting into the finished wall, which means removing tile, cutting the wall, installing the niche, waterproofing, and retiling. It is much easier and cheaper to add a niche during a full shower remodel. Retrofit installations typically cost 30 to 50 percent more than new construction installs.

What is the best tile for inside a shower niche?

Porcelain tile is the best all-around choice. It absorbs almost no water (less than 0.5 percent absorption rate), resists staining, and comes in hundreds of styles. Natural stone works well for shelves but needs sealing. Avoid porous or unglazed tiles that absorb moisture and stain over time.

How many shower niches do I need?

One niche works fine for a single user. Two people sharing a shower should consider a double niche or two separate niches. A good rule of thumb is to count your shower bottles and add room for two or three more. Most households need 12 to 24 inches of total shelf width.

Should I use grout or caulk inside the niche?

Use caulk at every inside corner where two surfaces meet at an angle. Use grout for the flat field tile areas. Inside corners are movement joints that will crack if grouted. Match the caulk color to your grout for a seamless look. Use a mildew-resistant silicone caulk rated for wet areas.

Can I put a shower niche on an exterior wall in Miami?

You can, but it is more work and more expensive. Miami homes are typically CBS construction with solid concrete block exterior walls. You cannot recess a niche into block. You need to fur out the wall first or use a surface-mounted niche insert. Budget an extra $200 to $500 for the additional framing and waterproofing work.

Do shower niches need to be waterproofed?

Absolutely. The niche is a hole in your shower wall. Every surface inside the niche must be covered with a waterproof membrane before tile goes up. The membrane must overlap with the waterproofing on the surrounding shower wall. Skipping this step is the number one cause of hidden water damage behind tile showers in South Florida.

Ready to Add a Shower Niche to Your Bathroom?

A well-built shower niche makes your daily routine easier and your shower look sharper. But the details matter. Size, placement, waterproofing, and slope all need to be right, especially in Miami's humidity.

Broke & Fixed Home Solutions builds custom shower niches across Miami-Dade County. We handle everything from design planning through final tile work. Every niche we install is fully waterproofed, properly sloped, and built to hold up in South Florida conditions.

Call us at (786) 363-7039 or send a message to get started on your shower remodel. We serve Kendall, Palmetto Bay, Doral, Pinecrest, Coral Gables, and all of Miami-Dade.

Shower Niche Ideas and Installation Guide for Miami Bathrooms