One sink or two? It's the question almost every bathroom remodel runs into, and the right answer comes down to your space and how many people share the room. Here's a clear, side-by-side comparison of single-sink vs double-sink vanities — what each does best, where each falls short, and how to know which one fits your bathroom.
Single vs Double Sink Vanity: Quick Comparison
| Single Sink | Double Sink | |
|---|---|---|
| Best for | Small & medium baths, one user | Primary & shared baths, two users |
| Typical width | 24"–48" | 60"–96" |
| Counter space | One wide, uninterrupted run | Split between two basins |
| Storage | Good — full cabinet + drawers | Most — storage between & under basins |
| Install | Simpler — one drain & supply set | More involved — two of everything |
Single-Sink Vanity
A single-sink vanity has one basin on the countertop, with drawers and a cabinet below for storage. It's the most versatile choice, available from compact 24" up to a spacious 48".
Choose a single sink if you:
- Have a small or medium bathroom and want to keep the floor open
- Prefer one wide, uninterrupted stretch of counter
- Want a simpler, faster install (one drain and supply set)
- Are furnishing a guest or powder room
The one downside: in a large primary bath, a lone single sink can look under-scaled and leave two people fighting for the basin.
Double-Sink Vanity
A double-sink vanity puts two basins on one countertop — the end of the morning traffic jam. Doubles start around 60" and go up to 96", with generous storage between and beneath the sinks.
Choose a double sink if you:
- Share the bathroom and want two people to get ready at once
- Have a primary or large bath that can carry the width
- Want maximum storage and a substantial, balanced look
The catch is width: each basin needs about 15" from its center to the nearest wall, so you generally need at least 60" before a double is comfortable. Force two sinks into less and you lose usable counter on both sides. In a tight room, a wide single wins.
So, Which One Is Right for You?
It comes down to width and who's using the room. Under ~60" of wall, or a bath for one? Go single. 60"+ and shared? A double earns its space. If you're between sizes, our bathroom vanity size guide walks through every width from 24" to 96".
Whichever you choose, the build is what makes it last. Every Willow vanity — single or double — is made from solid teak, solid white oak, or durable painted birch, never MDF or particleboard, with soft-close storage and a quartz or natural Carrara marble top.
FAQ
Is a single or double sink vanity better?
Neither is universally better — it depends on your space. A single sink is best for small and medium baths and one user; a double sink is best for shared or primary baths with at least 60 inches of wall.
What size do you need for a double sink vanity?
About 60 inches minimum. Each basin needs roughly 15 inches from its center to the nearest side wall, so a double is comfortable from 60 inches up; 72 inches is ideal.
Can you put a double sink in a small bathroom?
Usually not comfortably. Under 60 inches, two basins crowd each other and leave little counter. A wide single-sink vanity is the better choice in a small bathroom.
Does a double sink vanity add value?
In a primary or shared bathroom, yes — buyers expect two sinks in a main bath, and the extra storage and counter are a selling point. In a small bath, a quality single adds more value than a cramped double.
Shop single and double vanities at Willow Bath and Vanity. Solid teak, solid white oak, and durable painted birch — never MDF or particleboard — with soft-close storage and a quartz or Carrara marble top.
Shop Single-Sink · Double-Sink · 60-Inch.
