Do I Really Need a Double Sink Vanity?

If you’ve spent any amount of time looking at bathroom renovation photos, you might start to think there’s a rule somewhere that says:

Primary bathroom = double sink vanity.

Two sinks. Two faucets. Two mirrors. Perfectly folded towels. Not a toothpaste tube or wet washcloth in sight.

It looks beautiful.

But do you actually need two sinks?

Pull up a chair and grab your coffee, because this is one of those bathroom renovation decisions where my answer is going to be: maybe.

I know. Very helpful.

But hear me out.

We’ve renovated enough bathrooms over the years to know that what looks fantastic in a photograph isn’t necessarily what will work best in your bathroom. And when it comes to double sink vanities, there are some definite advantages—but there are also a few drawbacks that homeowners don't always think about until after the renovation is finished.

So before you automatically put a 60-inch double vanity on your bathroom wish list, let's talk about whether you really need one.

What Is a Double Sink Vanity?

Let's start with the obvious.

A double sink vanity is simply a bathroom vanity with two separate sinks and two faucets, usually installed in one long countertop. You can also have two completely separate vanities, although that's generally something we see in larger primary bathrooms.

Double vanities are most commonly used in:

• Primary bathrooms

• Ensuite bathrooms

• Jack-and-Jill bathrooms

• Bathrooms shared by several children

The whole idea is pretty simple: two people can use the vanity at the same time without fighting over the sink.

And depending on your household, that can be wonderful.

Or completely unnecessary.

What Are the Benefits of a Double Sink Vanity?

Let's start with the good stuff, because there are definitely situations where having two sinks makes life easier.

Two People Can Get Ready at the Same Time

This is the biggest advantage.

If you and your partner both get ready for work at 7:00 in the morning, having separate sinks can be incredibly convenient.

One person can brush their teeth while the other shaves. You're not waiting for someone to finish. You're not reaching around each other. And nobody is spitting toothpaste into the sink while you're trying to wash your face.

Romance is alive and well.

For busy families, the same thing applies. If two or three children are getting ready for school at the same time, two sinks can make the morning routine run a little more smoothly.

Everyone Gets Their Own Space

There is something rather nice about being able to say:

This is my sink. That is your sink.

Your toothbrush lives over here. Their razor lives over there. Your moisturizer doesn't have to share real estate with somebody else's electric shaver.

In a shared bathroom, creating individual zones can make the room feel much more organized.

A Double Vanity Can Make a Large Bathroom Feel Balanced

If you have a long wall in a large primary bathroom, one small sink sitting in the middle of it can sometimes look a little lost.

A larger vanity with two sinks can help visually anchor the room and make the bathroom feel more proportional.

It can also give you an opportunity to add two mirrors, attractive lighting and a beautiful countertop, creating a really nice focal point.

Buyers Often Like Them

We frequently hear homeowners ask:

“Will a double vanity increase my home's resale value?”

I wouldn't install a second sink solely because you think it's going to dramatically increase the selling price of your house.

But in a spacious primary ensuite, a double vanity is certainly something many buyers expect—or at least appreciate. It can make the bathroom feel more luxurious and functional.

The key word there, though, is spacious.

Because squeezing two sinks into a bathroom that really only has room for one isn't going to make the bathroom more appealing.

It may do exactly the opposite.

What Are the Disadvantages of a Double Sink Vanity?

This is the part that doesn't get nearly as much attention on Pinterest.

Two sinks take up space.

And sometimes that space would be much more useful somewhere else.

You Lose Counter Space

Think about everything you actually do at your bathroom vanity.

You might put down your makeup bag, hairbrush, curling iron, skin-care products, contact lenses or jewelry.

Every sink you add creates another hole in your countertop.

With a single sink in a 60-inch vanity, you can have a wonderfully generous stretch of counter on either side.

Put two sinks into that same vanity and suddenly there isn't nearly as much usable counter space.

For some homeowners, that's a perfectly acceptable trade-off.

For others, it's annoying every single morning.

You Can Lose Storage Too

This one surprises people.

Every sink needs plumbing underneath it.

That plumbing has to go somewhere, which means the cabinet or drawers beneath the sink have to accommodate the drain and water supply lines.

With one sink, you're dealing with one set of plumbing.

With two sinks, you're dealing with two.

Depending on the vanity design, that can mean giving up valuable drawer or cabinet space.

And here's something worth thinking about:

How often do two people actually need running water at exactly the same time compared with how often you need somewhere to put your stuff?

If storage is already tight, one sink with a really well-designed bank of drawers may make your bathroom much more functional than two sinks.

Does a Double Vanity Cost More?

Usually, yes.

You're purchasing:

• A larger vanity

• Two sinks

• Two faucets

• Additional plumbing fixtures and connections

• A larger countertop

• Possibly two mirrors

• Possibly additional lighting

There can also be additional plumbing labour involved, particularly if your existing bathroom only has plumbing for one sink.

If we're already completely renovating the bathroom and the wall is open, adding plumbing for a second sink may be relatively straightforward and cost would be minimal.

If we're trying to convert an existing bathroom from one sink to two without otherwise changing much, it can become more complicated and more expensive.

That's why I always encourage homeowners to look at the whole bathroom plan rather than pricing one feature in isolation.

Sometimes the money you're spending to add that second sink could be used for something you'll appreciate much more—better storage, a larger shower, heated flooring or a nicer vanity.

How Wide Does a Double Sink Vanity Need to Be?

This is probably one of the most common questions people Google about double vanities.

You'll find double vanities starting around 48 inches wide, but just because someone manufactures one doesn't necessarily mean I would recommend it.

For most bathrooms, 60 inches is a much more realistic starting point for a double sink vanity.

Even at 60 inches, you need to choose your sinks carefully and pay attention to how much counter space is left between them.

If you have 72 inches, you have much more breathing room. The sinks can be comfortably spaced apart, and you can often incorporate useful drawer storage between them.

And if you have an even longer wall, we may have another option entirely: two separate vanity areas with storage between them.

The important thing is that we don't design your bathroom by saying, “Technically, we can fit two sinks here.”

We want to ask:

Will two sinks actually be comfortable here?

Those are two very different questions.

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Not sure whether one sink or two makes the most sense for your bathroom? Sometimes seeing the options within your actual space makes the decision much easier. If you’re planning a bathroom renovation, we’d be happy to help you look at the layout, storage and everyday functionality before you commit to a design.

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Can You Put Two Sinks in a 48-Inch Vanity?

Technically, there are 48-inch double sink vanities available.

Would I automatically recommend one?

No.

In many bathrooms, putting two sinks into 48 inches leaves very little room around each basin. You can end up with two tiny sink areas instead of one really functional vanity.

If your bathroom only allows for a 48-inch vanity, I would seriously consider using one sink and maximizing your counter and storage space instead.

There are always exceptions, of course. That's why layout matters.

Is a 60-Inch Vanity Big Enough for Two Sinks?

Generally, yes.

A 60-inch vanity is a very common size for a double sink configuration and can work quite well.

But don't stop at the overall measurement.

We also need to look at:

• The size of each sink

• The distance between the sinks

• How close the sinks are to walls

• Drawer and cabinet configuration

• Plumbing locations

• Mirror placement

• Lighting

• Clearance in front of the vanity

A vanity can fit perfectly against a wall and still be completely wrong for the bathroom if you can't comfortably stand in front of it or open the drawers without hitting something.

Bathroom design is a bit like putting together a puzzle. Every piece affects another piece.

Is One Sink Better Than Two in a Primary Bathroom?

Sometimes, absolutely.

Let's imagine you have room for a beautiful 60-inch vanity.

Option A gives you two sinks.

Option B gives you one sink, loads of counter space and a fantastic bank of drawers.

Which one is better?

I can't answer that without knowing how you use your bathroom.

If you and your partner get ready at exactly the same time every morning and are constantly bumping into one another, you'll probably love having two sinks.

But maybe one of you showers at 6:30 and the other doesn't get up until 8:00.

In that case, how often are you really going to use both sinks simultaneously?

You may enjoy the extra storage and counter space far more than you would enjoy a second basin.

This is why I always want to know how people actually live before deciding how their bathroom should be designed.

What About a Double Vanity for a Kids' Bathroom?

This is one situation where two sinks can make a lot of sense.

If you've got several children trying to get ready for school at the same time, two sinks can help reduce bathroom traffic jams.

But again, think about storage.

Kids come with an astonishing amount of bathroom stuff.

Hairbrushes. Hair products. Toothpaste. Towels. Bath toys. Skincare. Sixteen bottles of something apparently essential to the survival of a teenager.

So if installing the second sink means eliminating most of your drawers, we may want to reconsider the design.

Sometimes one sink with excellent storage is still the better choice.

Are Double Sink Vanities Harder to Clean?

Well...

There are twice as many sinks.

And twice as many faucets.

So yes, there is more to clean.

You've also created additional edges around sinks and faucets where water, toothpaste, soap residue and all the other lovely bathroom gunk can collect.

Is this a reason not to install one?

Probably not.

But if you're somebody who already resents cleaning one bathroom sink, I feel obligated to point out that you're voluntarily purchasing another one.

Consider this your warning.

Should I Choose One Large Mirror or Two Mirrors?

Either can look beautiful.

Two individual mirrors help create that “his and hers” look and give each sink its own defined space.

One large mirror can make the room feel bigger and reflect more light.

Your choice will often depend on the width of the vanity, the location of your lighting and the overall style you're trying to achieve.

If you're planning wall sconces, for example, mirror size and spacing need to be figured out before the electrical rough-in—not after the renovation is nearly finished and somebody suddenly realizes the light fixture is sitting where the mirror needs to go.

Yes, these things matter.

Does a Double Vanity Need Special Plumbing?

Each sink requires hot and cold water connections and a drain.

If you're replacing an existing double vanity with another double vanity, the plumbing may require relatively little alteration.

If you're converting a single sink vanity to a double, plumbing modifications will usually be necessary.

Exactly how involved that becomes depends on where the existing supply and drain lines are located, what's behind the wall and how the new vanity is configured.

This is one of those situations where it's much better to determine what's required before ordering the vanity.

We never want the plumber opening the box on installation day and discovering that your beautiful new bank of drawers occupies exactly the same space required for the plumbing.

So...Do You Really Need a Double Sink Vanity?

Here's my coffee-table answer:

Don't install two sinks simply because you think a primary bathroom is supposed to have two sinks.

Install them because two sinks will make your life easier.

Before making the decision, ask yourself:

• Do two people regularly use this bathroom at the same time?

• Do we actually need two sinks at the same time?

• Is the vanity wide enough that two people can use it comfortably?

• How much counter space will we lose?

• How much storage will we lose?

• Would we rather have extra drawers?

• Is adding the second sink worth the additional cost?

• Are we planning to stay in the home long enough that our own preferences matter more than resale?

• Does the double vanity improve the bathroom layout—or are we forcing it in because we like the idea of it?

If you've got plenty of space and two people regularly get ready together, a double vanity can be fantastic.

If you're working with a smaller bathroom, don't feel as though you're somehow settling by choosing one sink.

A gorgeous 60-inch vanity with one sink, generous counter space and beautifully designed storage can be far more luxurious and functional than two sinks crammed into the same space.

And ultimately, that's what good bathroom design should be about.

Not how many sinks you can squeeze into the room.

Not what Pinterest says your bathroom should look like.

And definitely not what your neighbour has.

It's about creating a bathroom that works for the people who actually live in your house.

Because if I have to choose between a bathroom that photographs beautifully and one that makes your morning a little easier every single day?

I'm choosing the second one every time.

Ready to Plan a Bathroom That Actually Works for You?

A beautiful bathroom is wonderful—but a beautiful bathroom that makes your mornings easier is even better.

If you’re thinking about renovating your bathroom, let’s talk about how you use the space, what isn’t working now and what would make it better. From vanity size and storage to lighting, plumbing, flooring and all those little details you may not have thought about yet, we can help you create a bathroom that looks great and works beautifully for your household.

Contact Multi-Trade Building Services today to book your bathroom renovation consultation.

Planning a bathroom renovation? Before you start choosing tile and falling in love with fixtures, take a look through some of our other bathroom renovation articles. They’ll help you make smarter decisions, avoid a few common mistakes and create a bathroom that works just as well as it looks.