Single vs Double Sink Vanity: Space, Storage, Cost

Single vs Double Sink Vanity: Which Fits Your Bathroom?

Choosing between a single and double sink vanity is a space decision first. If your wall is under 60 inches, a single is the fit. At 60 to 66 inches either works, so your household decides. At 72 inches, a double sink is comfortable. 

The key is not to default to a double: a well-fitted single beats a cramped double, and in the same width a single often gives you more usable counter and storage.

This ARIEL Bath buying guide compares the two on space, storage, cost, and plumbing, then walks through which one suits which bathroom.

^{ARIEL Kelly 48 Inch Single Rectangle Sink Bathroom Vanity In Oak l ARIEL Kelly 60 Inch Double Oval Sink Bathroom Vanity In Oak}

ARIEL Bath single vs double sink vanity at a glance

What each configuration offers

Both are solid choices; they suit different bathrooms and households.

Single sink vanity

A single sink vanity has one basin, in widths from 30 to 66 inches. Because there is only one drain, the cabinet below is one uninterrupted storage space, and the counter runs wide to one side. It costs less and installs more simply, with one set of plumbing connections. A single suits small, guest, and powder baths, and primary baths used mainly by one person.

Double sink vanity

A double sink vanity has two basins, in widths from 60 to 72 inches. It lets two people use the bathroom at once, each with their own sink, counter zone, and mirror. It costs more and needs more plumbing, but for a shared or master bath it can change the daily routine.

^{ARIEL Milan 48 Inch Single Oval Sink Bathroom Vanity In Warm White}

Single vs double sink vanity comparison

1. Space and wall width

This is the deciding factor. A double sink vanity needs at least 60 inches of wall width, and 72 inches for comfortable simultaneous use, plus clearances. Leave at least 30 inches of clear floor in front and 15 inches from each sink's center to the nearest side wall. 

If your bathroom cannot support a double without breaking those clearances, a single is the right call regardless of anything else. In a bathroom under about 80 square feet, a double tends to dominate the room.

2. Storage and counter

A single often wins here in a way people do not expect. In the same width, a single sink vanity gives a more usable counter, because two basins in a double take up much of the surface, and more uninterrupted storage below, because there is only one drain to work around. 

A double trades some of that for two separate zones, which is what makes it work for two users.

3. Cost

A double costs more at every stage: more cabinetry, a second sink and faucet, more countertop, and more plumbing. 

Keep in mind that an ARIEL Bath vanity includes the countertop, sink, and a 4-inch backsplash and ships free, so the top and backsplash are not separate costs on either configuration. For current pricing and any seasonal sales, check our product pages.

4. Plumbing and installation

A single connects to one drain and one set of supply lines, which makes it simpler and cheaper to install. A double needs two drains and two sets of supply lines, so it involves more plumbing work, especially if you are adding a second sink where there was one.

^{ARIEL West 72 Inch Double Rectangular Sink Floating Bathroom Vanity In Natural Oak}

Which should you choose?

Match the configuration to your space and household.

• Choose a single sink vanity if: your bathroom is small, a guest bath, or a powder room; one person mainly uses it; your wall is under 60 inches; or you want more counters and storage for less.

• Choose a double sink vanity if: two people regularly share the bathroom at the same time; you have at least 60 inches of wall, ideally 72; or you want the resale appeal of a double in a shared or master bath.

• At 60 to 66 inches, either fits. This overlap width takes a single or a double, so decide by how many people use the bathroom at once rather than by width alone.

Conclusion

The single-versus-double choice comes down to space first, then household. Measure your wall: under 60 inches points to a single, 60 to 66 inches works either way, and 72 inches or more makes a double comfortable. 

A single often gives more usable counters and storage in the same width and costs less, while a double gives two people their own space in a shared bathroom. Fit the vanity to the room, and either one works well.

Once you know your width and configuration, you can compare vanities by size directly.

Frequently Asked Questions

1. Q: Is a single or double sink vanity better? 
   ARIEL Bath: Neither is universally better; it depends on your space and household. A double suits a shared or master bath with two regular users and at least 60 inches of wall. A single sink suits smaller baths, single users, and anyone who wants more counter and storage for less.

2. Q: How much space do you need for a double sink vanity? 
   ARIEL Bath: A double sink vanity needs at least 60 inches of wall width, and 72 inches for comfortable use by two people at once, plus 30 inches of clear floor in front and 15 inches from each sink's center to the side wall.
3. Q: Does a single or double vanity have more storage? 
   ARIEL Bath: A single often has more usable storage and counter in the same width, because two basins in a double take up much of the surface and add a second drain to work around below.
4. Q: Does a double sink vanity cost more? 
   ARIEL Bath: Yes, at every stage: more cabinetry, a second sink and faucet, more countertop, and more plumbing. An ARIEL vanity includes the top, sink, and backsplash on either configuration, so those are not separate costs.
5. Q: Can two people share a single sink vanity? 
   ARIEL Bath: Yes, a wide single sink vanity works for two people, though not at the same sink simultaneously. For regular simultaneous use, a double is more comfortable.
6. Q: What is the smallest bathroom for a double vanity? 
   ARIEL Bath: A double needs at least 60 inches of wall. In a bathroom under about 80 square feet, a double tends to crowd the room, so a single usually fits better.