small-bathroom-with-shower-dimensions

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Someone searching for small bathroom with shower dimensions usually wants to fit a shower into a room they already have, without losing the toilet or the sink. Two sources answer part of that. Fine Homebuilding describes 5 by 8 foot and 6 by 9 foot bathrooms as common on renovation projects, and recommends a curbed shower at least 36 inches wide. South Dakota State University Extension gives dimensions for accessible bathrooms, including a 36 by 36 inch shower with a low threshold. Neither source gives one shower size that suits every small bathroom. The figures below are the ones each source states. The code figures from the companion post on standard shower length are not repeated here.

Quick answer

• Fine Homebuilding says that on renovation projects, “bathroom dimensions of 5 ft. by 8 ft. and 6 ft. by 9 ft. are common.”
• For a shower in a room that size, the article prefers a tiled shower built to the space available. A drop-in unit can fit the same rooms, but it comes only in stock sizes.
• For a curbed shower, the article recommends a minimum width of 36 inches.
• In a 6 by 6 foot room with a toilet, sink and shower, the article recommends a neo-angled shower base.
• The SDSU figures are for accessible bathrooms, not for a general small bathroom.

Start with the room you have

Fine Homebuilding is written by a bathroom designer on Cape Cod who is often asked to update an older bathroom within its existing footprint. The article’s main advice is to put as much usable area into the shower as the floor plan allows. It says: “The best way to maximize shower space in a small bathroom is to use a tiled shower that can be customized to the available space.”

The article gives a second option for a room of the same size. Drop-in units “offer more showering space than a tub/shower combo and can fit in a 5-ft. by 8-ft. or a 6-ft. by 9-ft. bathroom.” The article also lists their limits: “However, they can consume more floor space than a tiled shower, are available only in stock sizes, aren’t as durable as tile, and don’t offer the design options of tile.”

The table below sets out the three options the article covers, using only what the article says about each one.

Option	What the article says	Limits the article gives
Tiled shower	Can be “customized to the available space”; a mortar-bed shower pan lets you use glass or tiled walls.	The article does not give a cost figure for a tiled shower.
Acrylic or fiberglass drop-in unit	Offers more showering space than a tub/shower combo; fits a 5 by 8 or 6 by 9 foot room.	Available “only in stock sizes,” less durable than tile, and fewer design options.
Eurobath (no threshold, door or curtain)	“allows for the largest showering space within the standard bathroom footprints found in older homes.”	“likely to be the most-expensive option,” and needs a full mortar bed and walls protected with tile.

The Eurobath: no threshold, no enclosure

A Eurobath is a shower with no threshold, door or curtain. The article says it “is separated from the rest of the room visually rather than structurally.” It also says the continuous floor “offers accessibility that will help homeowners to age in place.”

The construction has consequences for the rest of the room. Instead of a shower pan, the article says a Eurobath “relies on a full mortar bed that pitches the bathroom floor toward a drain.” Because nothing keeps water inside the shower, the article says “the bathroom becomes a wet room,” and that “The walls, then, need to be protected with at least a tile wainscot.”

The article also covers the room around the shower. It suggests “shelving and storage compartments of acrylic, glass, or stainless steel” instead of wood, because wood “can deteriorate because of excessive moisture.” It also recommends a porcelain pedestal sink rather than a vanity. For seating, the article says that in a shower no longer than 48 inches, a bench opposite the showerhead lets a person sit in the spray. Corner benches “save space” and can hold soaps and shampoos.

Curbed showers and the 36-inch width

A curbed shower keeps the drain area separate from the rest of the room with a raised edge. The article says “The curb defines the drainage area of the shower, and the walls or half-walls contain water spray.” For a shower with a door opening, it says “To keep water in the shower, a curb approximately 51/2 in. to 6 in. high runs across the 24-in.-wide opening.”

On width, the designer’s advice is direct. The article says: “Although in very tight rooms I have designed curbed showers as small as 32 in. wide, I recommend a minimum width of 36 in.” It adds that “Bumping up the width to 42 in. or 48 in. provides a roomy feel without losing the sense of enclosure.” The 32 inch figure is described as a design the author has built in very tight rooms, not as a recommended size.

Wall choice changes how much room is left. The article says “A tiled wall uses up at least 51/4 in. of shower area,” which matters when the floor is limited. It describes a range of options: “Full-height tiled walls offer the most privacy, but they restrict the usable area.” A tiled kneewall with glass above gives more elbow room, and “A 36-in. or taller kneewall can sometimes function without an attached glass wall.” A full glass wall “keeps water inside the shower and takes up the least amount of space.”

For seating in a curbed shower, the article says: “For comfort, the bench should be at least 12 in. deep and have room underneath for feet.”

Two or more heads change the plumbing. The article says “Multiple showerheads typically require that mixing valves be plumbed on the same wall as the showerhead,” and that “Because of the extensive spray coverage, a shower door is a must.” In that case, the article suggests a 36 inch tall kneewall with glass panels above, which “maximizes light.”

The 6 by 6 foot room: the neo-angled base

A square room of about 6 by 6 feet is the hardest layout in the article. The writer describes it as “Small bathrooms aren’t always rectangular, and designing a small, square bathroom (6ft. by 6 ft.) to include a toilet, a sink, and a shower can be a challenge.” For that room, the article says “The most efficient layout I’ve found for a room of this shape uses a neo-angled shower base.”

The clipped corner is the key feature. In the article’s words, “The clipped corner creates an angled opening that allows easy access to the shower between other fixtures in the room.” A neo-angled base is a curbed shower, so it can use glass, tile, or both for the walls. The article points out a trade-off in pan choice: “If you use an acrylic shower pan, you’ll have to use glass walls, and you’ll be limited to off-the-shelf shower dimensions.” A mortar-bed pan allows tiled or glass walls and a custom size.

The article also suggests a second route for the smallest rooms: removing one corner of the shower. It says “The corners farthest from the showerhead are the least-used space in a shower.” It adds that “Rain-shower (or sunflower) showerheads work well here because they stand out from the wall and can direct water straight down.” For a choice of head, see what size shower head you should get.

Fixtures, splash walls and controls

Where the toilet and sink sit matters as much as the shower’s own size. The article says fixtures within a certain distance of the spray need protection, and it gives the splash wall as one way to protect them. The splash wall “needs to be only as high as the showerhead and as deep as the fixture it’s protecting.” The designer’s own spacing is “a minimum of 16 in. from the centerline of the toilet, and at least 3 in. from the edge of a sink.”

Controls are part of the layout too. The article says “Plumbing the shower control next to the entrance lets you adjust the temperature before entering the shower spray.” It gives a height for one design: “Controls are usually 48 in. off the floor, but 42 in. is fine on the 48-in.-tall kneewall I’d use here.” That is one designer’s layout, not a rule, and the article does not say the height applies to every shower.

Head height is a separate question from fixture spacing. For that, see what height a shower head should be.

Accessible small bathrooms: what the SDSU guide gives

The SDSU guide is a different kind of source. It is part of the Adaptable Home Certification series, and it is about housing for people who have disabilities. The guide says “The bathroom is arguably the most-important room in a residential setting when it comes to occupants or visitors who have disabilities.” Its figures are for wheelchair access and for adapting an existing bathroom, not for a typical small room.

For the shower, the guide gives these figures. “A wheelchair user needs a minimum of 48 by 36 inches to transfer to a shower.” It suggests the layout should “ensure that there is 36 inches between the shower and commode.” Its example accessible plan includes a “Minimum 36” x 36” shower with a maximum ½-inch rise beveled threshold.” For turning space, it says “A bathroom with this configuration has a space of a minimum of 60 inches in diameter.”

The guide also covers grab bars. It explains that “Blocking refers to the installation of additional lumber in key areas of a bathroom (e.g. commode and shower/tub), so that grabs can be added when the occupants need them.” For an existing tub, it gives an example: “Figure 5 gives an example of removing the tub and installing a shower with a seat.”

The guide is clear that not every home can follow it. It says: “This is not practical for all residential units, and many home occupants want access to a bathtub.” It also says “It is important to consult a trained building professional about any accessibility modifications you would like to do to your home.”

Mistakes to avoid

• Buying a stock drop-in unit for a room that needs a custom size. The article says drop-in units are “available only in stock sizes.”
• Planning a curbed shower narrower than 36 inches. The article recommends a minimum of 36 inches, and it describes 32 inches only for very tight rooms.
• Leaving the toilet or sink inside the spray. The article’s splash-wall advice exists for this reason.
• Skipping the wall protection in a Eurobath. The article says the walls “need to be protected with at least a tile wainscot.”
• Using accessible figures as a general standard. The SDSU figures are for accessible and adaptable bathrooms.

FAQ

What are the common dimensions of a small bathroom with a shower?

Fine Homebuilding says 5 by 8 feet and 6 by 9 feet are common on renovation projects. For a square room, the article describes a 6 by 6 foot layout with a neo-angled shower base.

Is a 36 inch shower wide enough for a curbed shower?

The article recommends a minimum width of 36 inches for a curbed shower. It says 42 or 48 inches gives a roomier feel. A narrower shower of 32 inches appears only as a design the author built in very tight rooms.

Are drop-in shower units a good fit for a small bathroom?

The article says they can fit a 5 by 8 or 6 by 9 foot room and offer more space than a tub-shower combination. It also says they come only in stock sizes, are less durable than tile, and offer fewer design options.

Do the accessible figures apply to a standard small bathroom?

Not directly. The SDSU guide gives accessible figures, such as 36 by 36 inches with a low threshold and 48 by 36 inches for transfer. It is written for wheelchair access and adaptable homes, and it recommends consulting a trained building professional for modifications.

How we chose

This post uses two sources. The first is a Fine Homebuilding design article by Bridget Cahill, Issue 191 (Kitchens & Baths). The second is a South Dakota State University Extension guide from the Adaptable Home Certification series. We counted them as two independent publishers, a trade magazine and a university extension service. Each quoted phrase was checked against the saved text of the page before it was used.

We kept a figure only when one of these sources states it in its own words. The SDSU figures are reported as accessibility targets, because that is how the guide presents them. We did not repeat the standard stall minimums from the companion post, and we did not use a product listing for any dimension. A second Fine Homebuilding article on sloping floors is mentioned in the design piece, but we did not open it, so it is not used.

What we could not verify: what the sources do not say

• Neither source gives a single shower size for a small bathroom. The 5 by 8 and 6 by 9 foot rooms are described as common, not as standard.
• The Fine Homebuilding article does not give a price for any shower type. It calls the Eurobath “likely to be the most-expensive option” and gives no figure.
• The article does not give the size of the clipped corner in a neo-angled base, or the size of a mortar-bed slope.
• The SDSU guide does not give a general minimum for a non-accessible shower in a home.
• The Fine Homebuilding article does not cite a code section for its width or clearance recommendations.
• Neither source says how a built-in bench changes the usable width of a shower in a small room, beyond the depth it recommends.

Sources

• South Dakota State University Extension, “What You Need To Know About the Bathroom: Adaptable Home Certification”, https://extension.sdstate.edu/what-you-need-know-about-bathroom-adaptable-home-certification (opened 2026-10-28). Used for the accessible shower, transfer and turning-space figures and the scope notes.
• Bridget Cahill, “Designing Showers for Small Bathrooms”, Fine Homebuilding, Issue 191 (Kitchens & Baths), https://www.finehomebuilding.com/project-guides/bathroom-design/designing-showers-for-small-bathrooms (opened 2026-10-28). Used for the small-bath room sizes, the drop-in, Eurobath, curbed-shower, neo-angled base and splash-wall advice.