Single vs. Double Vanity: Which Is Right for You?
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Get free quotesThe real question isn't preference — it's space and how the bathroom gets used
A double vanity is a genuinely popular feature for a primary (main) bathroom shared by two people getting ready around the same time each morning, and it's frequently cited as a desirable buyer feature. But it isn't automatically the better choice for every bathroom: it needs meaningfully more width (typically 60 inches or more to comfortably fit two sinks with adequate counter space between them), costs more in plumbing rough-in, counter material, and cabinetry, and can actually feel like wasted space in a bathroom that's rarely used by two people at once, like a guest bathroom or a bathroom attached to a single-occupant bedroom.
Single vs. double vanity
| Single vanity | Double vanity | |
|---|---|---|
| Minimum practical width | 24"–36" | 60"+ |
| Best for | Guest baths, smaller bathrooms, single-occupant use | Shared primary bathrooms, two people with overlapping routines |
| Plumbing cost | Lower — one set of supply/drain lines | Higher — two full sets of supply/drain lines |
| Counter/storage space per person | All to one person | Split, but each side gets dedicated space |
| Resale appeal | Fine for secondary bathrooms | A commonly desired feature in a primary bathroom |
Pro tip from our network contractors
If you're torn and the space is genuinely tight, consider a single vanity with an extra-wide countertop and two separate mirror/lighting zones rather than forcing in a true double-sink setup — it gives some of the "each person has their own space" feeling without the plumbing cost and space demands of two full sinks.
When single is clearly the better call
If the bathroom is smaller than about 60 inches wide where the vanity would go, a double vanity often means uncomfortably cramped sinks with too little counter space between them — at that point, a single vanity with more usable counter and storage is usually the better daily experience, even if a double sounds appealing on paper. See our bathroom vanity sizing guide and small bathroom layout ideas for how to make the most of the space either way.
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Get free quotesFrequently asked questions
How much space do you need for a double vanity?
Typically 60 inches of width or more, to give each sink adequate counter space without feeling cramped. In a narrower bathroom, a double vanity often results in uncomfortably tight sinks.
Does a double vanity add resale value?
It's a commonly desired feature in a primary bathroom and can be a positive for buyers, though its value depends on the overall bathroom size and layout — a cramped, forced-in double vanity isn't necessarily better than a well-designed single.
Is a double vanity more expensive to install than a single?
Yes — it requires two full sets of plumbing supply and drain lines, more counter material, and larger cabinetry, all of which add to the installation cost compared to a single vanity.
Can I add a second sink to an existing single vanity setup later?
It's possible if there's enough physical space and the plumbing can be extended, but it's a significantly bigger job than installing a double vanity from the start during a full remodel — plan ahead if you think you might want one eventually.
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