Why not?

Is there a reason you need one toilet to remain a regular height? I think it would be a quite expensive renovation to add another waste line for a second toilet. You also may want to consider the re-sale value of the renovation and if it would add value to the home (or subtract it, depending on what space you are reducing for the expansion).

If only one person is in need of a higher toilet, would an accessory item for the existing toilet seat be an option?

Based on my experience with ADA compliant height toilets, this seems like complete overkill. I am pretty short but find the ADA height toilets very comfortable to use.

Are you thinking of a toilet that is higher than standard height/ADA height/comfort hight toilets?

Also, at least in my experience, people don't only use the toilet in the master bath. I don't walk all the way into my master bath to use the toilet as I would use the one that is closer to the living or kitchen areas.

Pat, we have two water closets in our master bathroom. Dh is tall and prefers the so-called comfort height (ADA) toilets, but I do not as I'm about a foot shorter. If you can afford to remodel to make your master bathroom suit your needs or preference, then go for it.

Our water closets are separated by a 6' X 5.5' shower. Each has its own Panasonic exhaust vent on a timer, a small operable window about 5 ft. above the floor, overhead light on a motion sensor and Japanese bidet seat. There's a Panasonic WhisperWarm vent just outside the shower as well.

When we remodeled the master bathroom we also splurged on radiant floor heat and a large soaking tub. The original builder put ceiling speakers in the master bathroom tied to the whole house audio system with a controller in the bathroom.

Dh and I rarely use the powder room, and we don't use any of the guest bathrooms unless we're working on a different floor or watching a movie in the basement. When we're entertaining we always leave the other bathrooms free for guests and use our master bathroom, despite having some minor mobility problems.

As for resale, it's hard to say what might appeal to buyers. I've read about high priced houses having two water closets in the master bathroom or even his and hers master bathrooms. On the other hand, some posters here think that water closets are horrible confining cells that they'd never want in their homes. The interior of ours measure 44"W X 58"D with 36" out-swing doors, and they have more than adequate light and ventilation for us. Our next home will have a similar arrangement, whether we build or remodel.

If you purchased the "add on" seat and it was stored nearby not visibly, and kept clean etc... why not do that? Or a urinal for the tall guy, and the add-on plastic type for the other business.

Thanks to you all. Good point about the cost (and even the necessity) to add an additional waste line. I'm the one who is handicapped and needs the special toilet. For various reasons I have found the accessories unsatisfactory. The alternative is to replace the only other toilet in the house, which we may be able to do. Thanks for your thoughts!

Not sure what your circumstances are, but what about a Squatty Potty for the person who doesn't use the high seat? My husband likes the high seat, but I hate them. Compromise? Squatty Potty.

Thanks benjesbride for the great idea!

Earlier this week we were preparing for family who'll be staying with us as they escape Hurricane Florence, and I decided the hall bathroom needed a good, solid cleaning -- it's my college daughter's bathroom, and her standards aren't all that high. I worked more than an hour cleaning that bathroom -- mopped the floor, really scrubbed the shower and the stupid duplicate sinks, cleaned the mirrors.

The whole time I was thinking, WHY do people want to include extra items in their bathroom or build excessive bathrooms? Cleaning bathrooms is not fun.

Two toilets? I don't see a single benefit.

Now a bidet would be a good addition.

Piggybacking on Mrs Pete’s comment about cleaning... I think a wall hung, ADA toilet would be a great idea.

If you want two toilets, I say go for it. I'd try to see if it can be installed in such a way that, down the line when you're ready to sell, if two toilets seems too weird, could you replace one of the toilets (the regular size) with a bidet. Make sure to keep some extra tiles in case you need to make adjustments.

I still don't understand why your husband is not able to comfortably use an ADA compliant toilet since it is generally a comfortable height for all adults which is why it is sometimes called universal height.

Do you require a toilet that is higher than that?

I know they sell high seats with arms for those who require height but those are not attractive because at that point function trumps all.

What about grab bars. Do you have those installed on either side of the toilet. Grab bars are extremely helpful for those with limited mobility to get up and down without third party assistance.

If the reason for the higher toilet is access, simply install a regular height toilet and add attractive grab bars on either side of the toilet. The Kohler Choreograph system comes in three finishes and many lengths. Also acts as a shelf if needed

Thank you!

My folks have his-n-her bathrooms, (his has a shower, hers has a jet tub with shower, but she almost never used it), they share a walk-thru with linen closet in-between. They liked the arrangement, especially as they aged and their toilet needs differed more. Heck, so many bathrooms have two sinks, a tub, and a shower anyway, and kitchens with two sinks, having two toilets in a bathroom makes sense.

My last house had a double vanity in a shared space in the bathroom and then his & hers suits to each side. His side included a toilet and walk-in shower. My side included a tub/shower and toilet. I LOVED it. The only negative was an additional bath to clean, but if I didn't feel like cleaning his side, I left it for him to clean. The his/her suits were already there, so I don't have any advise on adding them, but it as an awesome little luxury if you can get it to work.

Double separate bathrooms are a nice luxury if one has the room just as separate bedrooms are a nice luxury for many. Of course, for many people the same could be more or less accomplished by a short walk to another bathroom on the same floor and also whether these toilets would be the only toilets ever used by the homeowners.

However, as I understood the OP, the issue is installing two toilets in the same bathroom rather than have two separate bathrooms.

I am still unclear as to whether the OP needs a toilet that is higher than the ADA/universal height toilet which is generally now recommended for most bathroom installations and why her spouse needs a toilet lower than that height.