Single vs Double Vanity: Sizes, Clearances and Costs
Single vs double vanity: choose a double vanity when two people get ready at the same time and the wall is at least about 60 inches wide, ideally 72 inches or more. Choose a single vanity when the space is under 60 inches, when one person uses the bathroom, or when you would rather have more counter space than a second sink. A second sink adds plumbing work and a larger stone top.
Summary
- Double vanities fit best at 72 inches and up.
- At 60 inches, two sinks leave little counter space.
- A second sink adds plumbing and a bigger top.
- Check common clearances around the toilet and door.
Vanity Widths and What They Fit
| Width | Single or double? | Counter space |
|---|---|---|
| 24–36 in | Single | Small |
| 48 in | Single | Generous |
| 60 in | Either | Tight with two sinks |
| 72 in and up | Double | Comfortable |
Common Clearances to Check
Codes commonly call for at least 15 inches from the center of a toilet to the side of a vanity, and around 21 inches of clear space in front of fixtures. Your local code and inspector decide what applies. Also check that the bathroom door and vanity drawers can open without hitting each other.
Single vs Double: The Real Trade-Offs
Single Vanity Wins When
- The wall is under 60 inches
- One person uses the bathroom
- You want counter space more than a second sink
Double Vanity Wins When
- Two people share the morning routine
- The wall is 72 inches or more
- Resale in a primary bath matters to you
What Changes in Cost
A second sink means a wider stone top, a second cutout and a second faucet, plus plumbing work by your plumber. Keeping the existing plumbing location keeps the job simpler. Trends for the year are in our guide on bathroom vanity trends 2026, and buying the cabinet and top together is covered in vanity cabinet with stone top. Plan a new bathroom vanity, or browse all kitchen cabinet guides.
Frequently Asked Questions
What is the minimum width for a double vanity?
About 60 inches, but 72 inches or more is much more comfortable.
Is a double vanity worth it?
When two people use the bathroom at the same time, usually yes.
Can I convert a single vanity to a double?
Only if there is space and your plumber can add the second drain and supply.
Does a double vanity add resale value?
In a primary bath it is often expected by buyers.
How much counter space should I leave?
Leave usable counter between or beside sinks; at 60 inches two sinks leave little.
