Totally agree with ci_lantro !!

Maybe 2 in the kids bathroom...if they can deal with it without getting each other soaked (mine couldn't)...

But in the master I wold prefer the extra counter space and elbow room...I think it looks nicer. Plus hubs and I are even more likely to have a water fight :)

Totally depends on two factors:

1) will two users be there at the same time. some people are on totally different schedules, but others enjoy chatting in morning and evening and find two sinks makes everything easier.

2) do you store lots of stuff on the counter, or do you put things away in your vanity or medicine cabinet? if the former, then you should probably place a higher premium on counter space, while in the latter instance all you really need is room for a toothbrush holder and soap, which can easily fit in a small area between the two sinks.

I'm in a friendly-bathroom relationship, and we have plenty of storage. Two sinks in 60" has been no problem at all, feels very luxurious. I might make different choices if my lifestyle were different.

Two sinks. I want my stuff near my sink.

With one sink you each get a drawer base to yourselves.

I like one sink because as mayflowers said you each get your own base drawers AND countertop side for stuff. Cleaning one sink works for me too but my husband and I very seldom need to use the vanity at the same time. I think for kids it could work either way. Do they fight? would it be easier for them to take turns. Even kids like their own space.

two

Two. Want my own space. Will put up with more cleaning to achieve this.

One. Always one:

- Only one sink and one faucet to buy /install.

- Less to clean on a weekly basis.

- More storage.

- More counter space.

- Sink can be placed in the middle of the vanity rather than having anyone so close to the wall that he or she will hit the wall while brushing teeth.

- Two people don't tend to use the sink at the same time anyway.

In a kids bathroom one sink and lots of counter especially if one is a girl. My sister and I never shared the bathroom and I find that our kids didn’t and neither do our grandkids. IMO the biggest importance is storage preferably not shared or what I do with our international students they each have a basket with all their bathroom stuff in it and they just bring it and take it away when they are done, this works very well even with our grand kids when they come in the summer.

Two for kids maybe, but that is only helpful for their early years. Later they will want privacy from each other. I hate to be in the bathroom with anyone else, even to brush my teeth. I value my privacy so one sink is preferable for me. I like the extra counter and storage aswell.

Two. We LOVE having double sinks for the kids and so do they. We were nervous as well about space with two vs. one and more counters and it was for nothing - our lives are easier and there is only so much you actually (should) leave on counters all the time vs drawers, etc.

The double sinks has stopped a lot of arguments because they still have their own space and when it is time to clean they have their own area to be responsible for.

Also, two is typically better for resale :)

It's all in how you live. I can't imagine a world where anyone stood side by side prepping in the bathroom. It has never been a huge deal to wait your turn in my world. But we also have never dressed/make up/hair in the bathroom. For the most part my "stuff" is in my bedroom. DH has always had his own bath in the basement. The three kids and I always had different schedules I guess. I taught my girls to use their bedrooms for make up and hair. The old school "dressing table" worked well in my home.

For us, TWO and separated vanities, also a toilet closet. Two vents, one in toilet room and other outside of shower. Bathroom stays dry and odor free. For the first 33 years of marriage we had separate baths (his was tiny, mine was big). Our 48' vanities with inset mirrored medicine cabinets above are separated by a deep 48' window seat (where I sit to dry my hair) with drawers below. Plenty of storage and we are not on top of each other. Works well for us. Actually, for me much more functional than my previous larger bathroom and certainly much nicer than his tiny bath.

Two. I hate the idea of prepping myself at someone else’s sink with stuck on toothpaste and splashed water all over the place.

I think arcy_gw indirectly described the exact problem with having only one sink in a master bathroom. Somebody will end up going to different bathroom to prep in the morning because its not convenient to have two people and only one sink. Its great if you are the one who gets to use the master bath and convenient sink, but not so good if you are the one who gets sent to the basement bathroom to get ready for work. For me the basement bathroom is two floors down, so its not a short walk.

Bruce

We did 2 for our new build, 62" vanity with square vessel sinks..

[houzz=https://www.houzz.com/photos/new-build-gabe-phvw-vp~135362273]

Hubby still needs to build the towers on each side..

Two. Everybody cleans their own sink.

My husband I have always liked two sinks. We each have our own drawer on our side of the sink. We are in an apartment with one sink while we build our house and it's been a pain for us on the days when we have to get ready at the same time. We are looking forward to going back to two sinks.

I always preferred to thinks because I hate sharing with my husband and his beard hairs. I think you have to consider whether you have storage underneath or a vanity with storage. Personally it really depends on whether you use a lot of products and like your countertops full of stuff or not. I’m happy with less countertop space as long as I have storage for any necessities. Sometimes it’s better that way because it forces you to throw away things you don’t actually need or use!

As you can see there is not a "rule" regarding this situation. It depends on how the space works, any constraints, and how you use this space. These considerations may be different for the kids bath and the master bath. When we downsized we were dealt a much smaller master bath and we faced the one or two sink dilemma, but the need for storage and the fact that if we added a second, it would be under a window, influenced our decision to go with one, but a bit larger and deeper than standard. You can't see in this photo, but our long narrow bathroom has a window where the second sink would have had to be and I love my lighted make-up mirror (not visible) as my "stuff" is all stored on this end and daylight is the BEST for grooming. But again, everyone's situation is different and in our case husband leaves early and I work from home. He wants nothing to do with the bathroom if I'm in it. (This is a guy who will not pass gas around me:)

Also, two is typically better for resale :)

Disagree, especially if -- as is so common -- if it's two sinks at the expense of storage space.

I can't imagine a world where anyone stood side by side prepping in the bathroom.

Oh, come on. I'm sure you went to summer camp and lived in a college dorm! In those situations people do stand side-by-side prepping ... but that's kinda it.

Two. Everybody cleans their own sink.

In theory, that sounds great. In reality, the partner who's going to leave toothpaste and hair in the sink is ALSO the partner who will never clean the sink ... leaving the other spouse to clean two sinks.

Personally it really depends on whether you use a lot of products and like your countertops full of stuff or not

Does anyone actually LIKE a countertop full of stuff? Looks messy, and it's harder to clean the bathroom.

As you can see there is not a "rule" regarding this situation. It depends on how the space works, any constraints, and how you use this space.

Wow, you have great storage in that bathroom.

I like one large sink and more counter space. I get one side hubby gets the other, we both get separate bank of drawers. In getting ready if we happen to be in the bathroom at the same time, it’s mirror time that is more valuable. One big mirror over 60 inch cabinet works well

I'd like to note that in my example photo, each person has their own drawers and cupboard as well as their own sink and medicine cabinet. In 60 inches.