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Where should a toilet be placed in a bathroom?

Try to place the toilet facing an open wall or door, if possible, rather than a fixture. Generally, this will ensure enough clearance room in front of the toilet. For other bathrooms, aim for a 30-inch front clearance space for the toilet.

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Bathroom space planning—toilet space, tub space, room for counters and sinks—is more critical than in other areas of the home. You might have a few extra square feet in the basement to place the washer or dryer anywhere you like; not so in the bathroom. Most people would like a generously spaced bathroom with tons of room to place the key services such as the toilet and sink without restrictions. This is possible in spec bathrooms or bathrooms found on home shows. But most real-world bathrooms, even those considered large, must account for every square and linear inch in order to make everything properly work together. Moving the toilet a few inches in one direction might mean that you can't put in that double-basin sink and 48-inch vanity you've been dreaming about. A toilet placed too close to a bathtub or sink will impact users of both the toilet and the bathtub, and may entirely bar some users from entering the bathroom. When subsequent buyers view the arrangement, improper spacing may affect their offering price. Bathroom fixtures are difficult to move around once they have been installed. So, it is vitally important to get your bathroom's floor plan right the first time.

Minimum Clearances

Local building codes are often silent on matters of recommended optimal spacing of toilets, sinks, bathtubs, and showers. Minimums may be found in the code, but these minimums can often be meager for real-world use. Instead, home improvement industry groups such as the non-profit National Kitchen and Bath Association (NKBA) draw up recommendations that many bathroom and kitchen designers use when laying out the rooms. Yet even NKBA guidelines should be regarded as bare minimums. If you do have any extra room, you should consider increasing the NKBA guidelines by several inches. One clearance issue that often comes up: How much clearance should you leave in front of a toilet? You can look at this from three angles. Minimum recommendations tend to be 21 inches. But as this allows less than two feet in front of the toilet, the NKBA recommends adding even more space: up to 30 inches, minimum. Yet that is not a satisfactory clearance for wheelchairs. Thirty inches is considered the absolute bare minimum for wheelchairs or walkers to clear the passage, with 48 inches being a more comfortable space.

Center Line and Sizing

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Spacing designations for bathrooms often use a term called center line. Center line, a way of standardizing measurements, means drawing an imaginary line down the center of the fixture, with the line typically crossing over the drain hole. Center line is meant to take into account the width of standard-sized fixtures but not all fixtures. If you have items that differ from the standard size, adjust accordingly. Center line usually refers to the side-to-side placement of toilets and fixtures but not the front-to-back placement of them.

Minimum Toilet Space: Front

Front toilet space clearance not only ensures that the user has enough room to take care of needs, but that other services, namely the shower, sink, tub, and door, remain unobstructed.

Minimum: 21 inches from the front of the toilet

Recommended: 30 inches from the front of the toilet

Disabled access: 30 inches to 48 inches from the front of the toilet

Example: Minimum Toilet Front Clearance

For most bathroom users, one cannot have too much toilet front space. You need space in front of the toilet when using the toilet, cleaning the toilet, and passing in front of the toilet to get into or out of the bathroom. Consider the NKBA-recommended 21 inches minimum to be the absolute bare minimum. With the popularity of longer bowl residential toilets, you will want to make sure that the toilet flange has extra space. Try to place the toilet facing an open wall or door, if possible, rather than a fixture. Generally, this will ensure enough clearance room in front of the toilet. For other bathrooms, aim for a 30-inch front clearance space for the toilet.

Minimum Toilet Space: Side

If you need to save room, pushing the toilet side space to a bare minimum is often helpful. When measuring toilet side clearances, always measure from the toilet's imaginary center line to the nearest side obstruction. If mounted on the wall, the toilet roll holder will need several inches of extra space, as well. But if you're looking to save room on the side of the toilet, consider toilet roll holder alteratives. You can mount the toilet paper on a separate stand. Or insert the toilet roll holder in the wall to save an extra few inches.

Minimum: 15 inches to the nearest side wall, partition, or fixture

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Recommended: 18 inches to the nearest side wall, partition, or fixture

Example: Minimum Toilet Side Clearance

In a tiny bathroom such as a half-bathroom or powder room, space is at a premium. So, it may only be possible to provide for the bare minimum clearances. In this case, make sure that the center line of the toilet is at least 15 inches from the nearest wall or sink. Eighteen inches would be preferred. Installing a pedestal sink can help give the feeling of greater room in these small areas.

Bathroom Sink and Countertop Clearances

Placement guidelines differ between single and double basin sink configurations. These spacing guidelines mostly apply to countertops where you are making the sink cutouts. If you purchase a bathroom vanity top, you will not have any choice as to sink cutout placement as they come pre-cut.

Bathroom Double Basin Placement

When installing two basins, space them at least 36 inches away from each other, measuring from one center line to the next center line. This is the recommended minimum distance to allow users to use both sinks simultaneously if needed. The distance also provides adequate room for the plumbing below the sink.

Bathroom Sink Distance From the Wall

Place bathroom sinks 20 inches from the back wall, recommended. The bare minimum is 15 inches. This is measured from the sink's center point to the wall. Bathroom vanities with precut sinks should already meet the spacing guidelines.

Bathroom Counter Placement From Front Obstruction

Place the bathroom counter at least 30 inches from any front obstruction, recommended. The bare minimum is 21 inches. This is measured from the edge of the countertop to the leading edge of the obstruction.

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