Why the Separate Bidet Is Disappearing From New Bathrooms
Author
Terri SanderPeople are moving towards wider vanities and bigger showers, so it is rare to find the two porcelain fixtures: a toilet and a low basin with its own taps in modern bathrooms, as they used to exist in older European bathrooms. But now, the washing has to be done in the toilet itself. This approach is convenient and can be a part of their home improvement project for some people, while others may find it unfamiliar or unsuitable.
This guide covers:
- Why the two-fixture layout is fading
- What replaces the standalone bidet
- How much space and plumbing the switch saves
- What to check before you buy
Why the Two-Fixture Layout Is Fading
A standalone bidet demands a lot from a bathroom. It needs its own water supply, its own drain, and enough floor space to sit beside the toilet, and the user has to move from one fixture to the other. In a huge European bathroom, that was never much of an issue, but many American bathrooms have never had that room to spare.
Combination toilets remove that trade-off by building the wash mechanism into the seat or the bowl. Majestic Flush’s combo range, for example, runs from fully integrated smart toilets by TOTO and HOROW to WASHLET+ pairings and a non-electric Swiss Madison model with a manual bidet. In compact remodels, it’s a big part of why bidet toilet combination units from Majestic Flush are replacing the two-fixture bathroom, since one fixture now does the job of both. Before selecting one, decide whether you want heated water and a dryer, because that decision narrows the field faster than style does, and ambient intelligence complements that style very well.
What Replaces the Standalone Bidet
Most combination toilets fall into three types, and the variation comes down to how the bidet is built in. Integrated smart toilets put the washing system, controls, and often a heated seat into one body. Toilet and seat systems pair a regular toilet with a matched electronic bidet seat and hide the connection, so the product looks built-in, but the seat can be replaced on its own. Non-electric combos use water pressure only, which suits bathrooms without an outlet nearby.
| Type | How the bidet is built in | Best suited to |
| Integrated smart toilet | Washing, controls and heated seat in one unit | Buyers who want automatic features |
| Toilet and seat system | Matched bidet seat with a concealed connection | Buyers who may upgrade the seat later |
| Non-electric bidet toilet | Manual wash powered by water pressure | Bathrooms without a nearby outlet |
A combo is often one part of a bigger remodel, so it helps to compare Majestic Flush’s smart bathroom fixtures together, from the toilet to the mirror, to keep the textures and features consistent.
How Much Space and Plumbing the Switch Saves
The space saving is simple to measure. According to the International Residential Code, a toilet or bidet needs at least 15 inches from its centerline to a side wall and 21 inches of clear space in front, and two fixtures alongside must sit at least 30 inches apart, center to center. A toilet and bidet pair therefore requires at least 60 inches of wall, while a single combination toilet needs 30.
The plumbing is simpler too. A combo uses the toilet’s existing drain and supply, so there is no second drain line to run and one fewer fixture to clean. Demand is moving the same way. In the National Kitchen & Bath Association’s 2026 Bath Trends Report, 51 percent of the industry experts surveyed agreed that smart toilets will increase in popularity over the next three years.
What to Check Before You Buy
Begin with the rough-in, the distance from the wall to the center of the drain. Most homes use 12 inches, though 10-inch versions exist for compact spaces. Check the water pressure too, since some tankless models need a minimum supply to flush well, and look at seat height if anyone in the home prefers a larger toilet.
Making the Switch to One Fixture
The extensive bidet is fading because the bidet has moved into the toilet. A combination unit gives the same wash in about half the wall space, with one drain and one fixture to clean. Measure your rough-in, map your water pressure, and decide early whether you want an electric or manual version.
For most remodels, the two-fixture bathroom is no longer the only way to get a bidet. It’s just the one that takes up the most room.
Frequently Asked Questions
Do bidet toilet combos need electricity?
Most do, because heated water, warm seats, dryers, and automatic lids all work on power. Non-electric models are available and use water pressure for a manual wash. If you want an electric model, consider a grounded outlet within reach of the toilet before the walls are finished, specifically with an electrician.
Will a bidet toilet combo fit where my current toilet is?
Generally, as long as the rough-in matches. Measure from the finished wall to the center of the drain bolts; most homes measure 12 inches, and some models come in 10-inch versions. Also look for the bowl length and seat height, since elongated smart toilets can extend even more into the room.
What happens to the old bidet plumbing when it’s removed?
A plumber caps the old supply lines and drain, usually inside the wall or below the floor, so nothing is left exposed. The floor and wall where the bidet stood will require patching or new tile, so it often makes sense to remove it as part of a wider remodel instead of on its own.
