Storage in a Small Bathroom

September 18, 2026

Wall-mounted bathroom vanity with a stone basin, below arched wall niches

A small bathroom has almost no floor and a surprising amount of unused wall and volume. Nearly all the storage gains are vertical.

The five places the space is

1. Above the toilet. The single most wasted wall in any bathroom. Shelves there hold towels, spare rolls and bottles, and sit in space that does nothing.

Mount the first shelf 20 to 24 inches above the cistern, or lifting the lid becomes a two-stage operation. Depth no more than 8 inches or you will hit your head standing up.

2. The wall beside or above the door. A high shelf across the door wall takes spare towels and bulk supplies, above the sightline so it does not close the room in.

3. Under the sink. Obvious, but a pedestal sink wastes it entirely. A vanity unit converts the same footprint into real storage, see the vanities. Before you pick one, check the widths, depths and heights that suit your wall in standard bathroom vanity sizes.

4. The corners. Dead in every rectangular room. A tall narrow corner unit uses about three square feet of nothing.

5. Inside the shower. A recessed niche is the best storage in a bathroom, and it costs nothing in floor space. Only practical during a renovation, but if you are tiling anyway, do it.

Floating vanity, for the floor you can see

Perceived room size tracks how much floor is visible. A wall-hung vanity leaves the floor running underneath to the wall, and the room reads larger for it, noticeably, not marginally.

It also lets you set the height, and it makes cleaning underneath trivial.

The costs: you lose the bottom 8 to 16 inches of storage, it must be fixed into studs or masonry rather than drywall, and the plumbing has to come out of the wall rather than up through the floor. That last one is the constraint that decides most bathrooms, the full comparison is in floating vanity vs freestanding.

Drawers beat doors

A cabinet under a sink has a large dead zone at the back that nobody can reach, and everything ends up in a pile at the front.

Drawers use the full depth, and everything in them is visible at once. They also work around the waste pipe better than shelves do, a U-shaped drawer notched around the trap uses space that a shelf simply cannot.

If the unit has doors, add pull-out baskets inside. It recovers most of the difference for very little money.

Shallow is fine

Bathroom items are small. A shelf 6 inches deep takes bottles, folded hand towels, a candle and a plant, which is most of what a bathroom stores.

8 inches if you stack bath towels rather than hand towels.

In a narrow bathroom a 6-inch shelf on the long wall is often possible where nothing else is, and it does not intrude on the walking space.

Materials, because this room is wet

The bathroom is the one room where the wrong material shows within a couple of years rather than a couple of decades.

MDF and chipboard swell irreversibly once water reaches an edge, and in a bathroom water always reaches the edges eventually. This is why cheap vanities fail at the base and around the sink cut-out first, and why they cannot be repaired when they do.

Solid timber handles it, provided every cut edge is properly sealed, especially the sink cut-out, the faucet holes and the underside. A vanity with a sealed cut-out lasts; one without it swells around the sink within two years.

Maintain the finish, particularly along the front edge where water runs off hands, and re-seal the silicone joint at the sink every couple of years rather than waiting for it to fail.

Ventilation matters more than the storage

Everything above fails faster in a bathroom that stays humid. An extractor that runs for fifteen minutes after a shower, or a window actually opened, does more to preserve timber furniture than any finish.

Persistent condensation on the walls means the room is too humid for any wooden furniture to last well, and that is worth fixing first.

What to do with towels

Towels are the bulkiest thing a bathroom stores and the thing most often left on the floor.

Rolled rather than folded, they fit in far less space and look deliberate.
A rail or hooks for the ones in use, shelf storage for the spares. In-use towels need air, not a cabinet.
Hooks dry a towel better than a rail does, because more of the surface is exposed.
Only keep the current set in the bathroom. Spares can live in the airing cabinet.

A bench, if there is room

A small bench or stool gives somewhere to sit, somewhere to put a towel within reach of the shower, and storage underneath if it has a shelf. In a bathroom used by anyone with limited mobility it stops being a nicety.

It needs to be a timber that tolerates wet, teak is the traditional choice for exactly this reason.