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From the Shop

Small bathroom vanities:
what fits a half bath.

By Jon, Farmhouse Urban Design · Updated

Bathroom vanities start at 18″ wide. Our smallest are the 18″ × 16½″ × 32″ Rustic Bathroom Vanity Base, from $499, for a standard vanity sink top, and the 20″ × 18″ × 27″ Rustic Wood Vessel Sink Vanity, from $539, shipping to the lower 48 states included. In a half bath, the room around the sink sets the size.

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Our two narrowest vanities drawn in 3D from our shop model, side by side at one scale: the 18″ Rustic Bathroom Vanity Base with a 19″ × 17″ sink top on it, and the 20″ Rustic Wood Vessel Sink Vanity with a vessel bowl on its planked top; the sink top and bowl aren’t included
Farmhouse Urban DesignFS-06Rustic Bathroom Vanity Base, 18″; Rustic Wood Vessel Sink Vanity, 20″From our shop model

Smallest

What is the smallest vanity for a bathroom?

About 18″ wide. Wayfair’s size guides start bathroom vanities at 18″ and say a single-sink vanity needs at least 18″ of width available.

Our smallest is the 18″ × 16½″ × 32″ Rustic Bathroom Vanity Base. It has no top of its own: it takes a 19″ × 17″ sink top. It’s shallow too: 16½″ deep, near the 16″ the same guides give as the shallowest vanities go.

Our narrowest Rustic Wood Vessel Sink Vanity is 20″ × 18″ × 27″, with its own planked top. With a deck-mount faucet behind the bowl, that top takes a bowl up to 17″ wide and 12½″ front to back (more in our note on vessel sink vanity height).

Under 18″, look at wall-mount, pedestal or console sinks: the same guides give them as 12–18″ wide.

Standard sizes

What are the standard sizes of bathroom vanities?

For a single sink, the most common widths are 24″, 30″, 36″ and 48″, about 20–21″ deep, and about 32″ tall to the top of the counter, by those guides.

Ours come in four standard sizes each. The Rustic Bathroom Vanity Base is 32″ tall to the top of its cabinet, and each size takes the sink top beside it, about 1″ wider than the cabinet:

Each standard size of the Rustic Bathroom Vanity Base, the sink top it takes and its doors
Size (W × D × H)Takes a topDoors
18″ × 16½″ × 32″19″ × 17″One door
24″ × 18″ × 32″25″ × 19″One door
30″ × 21″ × 32″31″ × 22″Two doors
36″ × 21″ × 32″37″ × 22″Two doors

Doors: the usual layout for each size. Any size can have one door or two.

The Rustic Wood Vessel Sink Vanity is built lower, because its bowl sits on the counter (why a vessel sink vanity is lower): 27″ tall to the top of its planked top, and 18″ deep at every size:

Each standard size of the Rustic Wood Vessel Sink Vanity, its top and its doors
Size (W × D × H)TopDoors
20″ × 18″ × 27″20″ × 18″One door
24″ × 18″ × 27″24″ × 18″One door
30″ × 18″ × 27″30″ × 18″Two doors
36″ × 18″ × 27″36″ × 18″Two doors

Doors: the usual layout for each size. Any size can have one door or two.

Half bath

What size vanity fits a half bath or powder room?

Those guides suggest a vanity 24–30″ wide for a powder room or half bath. Our 24″ and 30″ sizes fall in that range, and the 18″ and 20″ ones are narrower still. What matters more is the room the sink needs around it.

The International Residential Code (IRC), the model code most US states base their house codes on, puts a sink’s center at least 15″ from a side wall, and the National Kitchen & Bath Association (NKBA), the kitchen and bath designers’ trade group, recommends 20″. So in a space between two walls, a sink needs at least 30″ of width by code (40″ by the NKBA’s guideline), however narrow the vanity under it.

So a small vanity can’t sit tight against a side wall. With the sink centered, the 18″ Rustic Bathroom Vanity Base’s 19″ sink top needs a gap of at least 5½″ to the wall by code (10½″ by the NKBA’s guideline). The 20″ Rustic Wood Vessel Sink Vanity needs at least 5″ by code (10″ by the NKBA’s). Some states and towns change these rules, so check your local code.

Height

How tall is a powder room vanity?

The same as any bathroom vanity: about 32″ to the top of the counter, the standard height in those guides. They run from 30″ to 36″, the tall end sold as comfort height.

Our Rustic Bathroom Vanity Base is 32″ tall; with a sink top on it, commonly ¾″ thick and up to about 1¼″ for stone, the counter stands about 32¾–33¼″. Our Rustic Wood Vessel Sink Vanity is 27″ tall, and a typical vessel bowl adds 5–6″, so the rim is at about 32–33″: 32″ with the 5″ bowl drawn here.

Fig. 1Front · 18″ and 20″
Front view of our 18″ Rustic Bathroom Vanity Base, 32″ tall with a sink top on it, and our 20″ Rustic Wood Vessel Sink Vanity, 27″ tall with a 5″ bowl on it, its rim at 32″, side by side, drawn from our model at one scale
Our narrowest two, side by side, with a 5″ bowl on the Rustic Wood Vessel Sink Vanity. Sink top and bowl not included.

Sink makers’ guides put a comfortable rim for most adults at about 34–36″, so for a household of taller adults, aim there. Either vanity can be built to another height, quoted with its shipping: ask us for a quote.

Room around it

How much room should you leave around a vanity?

By code, at least 15″ from the sink’s center to a side wall, 30″ between the sink’s and a toilet’s centers, and 21″ clear in front; the NKBA recommends 20″ to a side wall, 18″ from a toilet’s centerline and 30″ in front, to anything opposite. On our narrowest vanities:

  • Beside a toilet: the 30″ between centers is the one that counts, more than the code’s 15″ or the NKBA’s 18″ from a toilet’s centerline to the vanity. It puts the toilet’s centerline at least 20½″ from the side of the 18″ Rustic Bathroom Vanity Base’s sink top, or 20″ from the 20″ Rustic Wood Vessel Sink Vanity, its sink centered.
  • In front: with the 18″ base’s 17″-deep sink top, the code’s 21″ makes 38″ from the wall behind it to anything opposite, and the NKBA’s 30″ makes 47″.
  • Doors: check that the bathroom door and the vanity’s own door open past each other. Each of our vanities has one door as standard at its narrower widths.

If you’re replacing a pedestal sink, our note on replacing a pedestal sink with a vanity covers measuring and the plumbing.

Which vanity

Which of our two vanities for a small bath?

Where floor space is tightest, the Rustic Bathroom Vanity Base: with its sink top, the 18″ base takes a 19″ × 17″ footprint, where our narrowest Rustic Wood Vessel Sink Vanity takes 20″ × 18″. Otherwise, it comes down to the sink you want:

  • Rustic Bathroom Vanity Base: a sink top you buy separately, with its sink in it, on a 32″ cabinet; 18″ wide and up, from $499.
  • Rustic Wood Vessel Sink Vanity: its own planked pine top, undrilled, with the vessel bowl of your choice on it, on a 27″ cabinet; 20″ wide and up, from $539.

Both have an open back for the plumbing and come raw, stained or painted. The sink and faucet aren’t included with either.

Questions

Good to know.

Something else? Email sales@farmhouseurbandesign.com. We reply usually within an hour or two, always within 24 hours.

How soon does a small vanity ship?
Raw, our standard sizes are ready to ship in 5–7 days; stained or painted, in 1–2 weeks.
Can you build one to fit my space?
Yes. Any other size is built to order and quoted with its shipping: send us your measurements and a photo of the space.
Can I build a small vanity myself?
Yes. Our free build guides show each step: how to build a small rustic bathroom vanity base and how to build a rustic wood vessel sink vanity. Each one’s printable plans, with every measurement for all four sizes, are $7, and we’ll draw them to your own size for $35.

Free to use at your own risk; check your local codes and work safely. This advice, and any figure in it, is provided as is, without warranty. Farmhouse Urban Design LLC is not liable for injury, property or water damage, or any loss from using this advice.

Build or buy

Build it yourself, or we’ll build it.

  • Built for you

    Rustic Bathroom Vanity Base

    A small rustic bathroom vanity base in pine, sold without a top: it takes a standard vanity sink top. Built to replace an old pedestal sink.

    From $499

    See the Rustic Bathroom Vanity Base
  • Built for you

    Rustic Wood Vessel Sink Vanity

    A rustic wood vanity for a vessel sink, with a solid planked pine top; the sink isn’t included. Four standard sizes ship in 5–7 days raw; any other size is quoted free.

    From $539

    See the Rustic Wood Vessel Sink Vanity
  • Free guide and plans

    How to build a small rustic bathroom vanity base

    Every step, with a drawing; printable plans for every standard size are $7.

    Read the Rustic Bathroom Vanity Base build guide
  • Free guide and plans

    How to build a rustic wood vessel sink vanity

    Every step, with a drawing; printable plans for every standard size are $7.

    Read the Rustic Wood Vessel Sink Vanity build guide
  • Built to your size

    Need another size?

    Send a few measurements and a photo of the space. The quote is free.

    Ask for a custom quote