HDB Renovation: Small Bathroom, Smarter Storage

HDB Renovation bathrooms are famously tight — most flats give you a single toilet that doubles as the shower, the laundry corner and the whole family's storage cupboard. The trick isn't cramming more in; it's putting the right thing in the right dead space so the room still feels usable. Since HDB started rolling out better base finishes in newer BTO flats from around 2024, some buyers get a decent toilet to begin with, but storage is still the first thing everyone asks us to fix.

Carve Storage Into the Wall With Recessed Niches

The easiest space to steal is the gap inside your shower wall. A recessed niche keeps shampoo and soap off the floor and out of the way of the spray, and it looks far cleaner than a plastic caddy clinging to the tiles. We usually build one or two at different heights — one low for the kids' stuff, one at adult level.

Just remember the wall has to be thick enough, or you're cutting into a neighbour's side, which HDB won't allow. A good contractor checks what's behind the tile before drawing the line, and that's part of why the permit and inspection process exists.

Vanity Cabinets That Earn Their Footprint

In a small HDB toilet, the vanity is your main closed storage. Go for a wall-hung cabinet with a countertop basin so you get a drawer or two underneath for towels and cleaning gear, plus the floor stays clear for mopping. We design a lot of these to match the rest of the home's carpentry so the look carries through.

Skip the tiny pedestal basin unless you've got storage elsewhere — it looks neat in photos but gives you nowhere to hide the clutter. A mirrored cabinet above the basin adds a second layer without eating floor space.

Use the Back of the Door and the Ceiling Line

The inside of the toilet door is dead space most people ignore. An over-door rack holds hairdryers, spare rolls and the plastic pail, keeping them off the vanity. Up high, a shallow cabinet near the ceiling swallows bulk items like detergent refills you only reach once a month.

These are the spots that turn a cramped toilet into one that actually copes with a family of four. We've seen a single over-door rack remove half the mess from a countertop.

What HDB Won't Let You Move

Here's the part that trips up first-timers: you can't shift the toilet. The bowl, the floor trap and the parapet wall all stay where HDB put them. That means your storage plan has to work around a fixed layout, not remodel it. Trying to relocate a toilet fixture is one of the fastest ways to fail the post-reno inspection and lose your deposit.

That deposit is $500 for up to a 3-room flat and $1,000 for a 4-room and larger, refunded only after HDB confirms no illegal works. Designing within the lines from the start is the cheaper path every time.

Waterproofing and Humidity-Proof Materials

Storage in a wet room fails fast if the materials hate moisture. Use marine-ply or PVC-backed cabinets near the shower, not plain chipboard that swells and smells within a year. All open shelving should be a material you can wipe dry, and the whole floor needs proper waterproofing before tiles go down — this is non-negotiable in HDB toilets.

Good ventilation helps too. Keep the exhaust fan sized to the room and run it after every shower. We've walked into resale toilets where the only problem was trapped humidity rotting the cabinet edges, and that's a fix nobody enjoys paying for twice.

Plan the Whole Toilet Before You Tile

The biggest storage wins happen on paper, before a single tile is laid. Know where the niche goes, where the vanity sits, and what hangs on the door, then build the waterproofing and tiling around it. Rushing this step is how people end up with a niche in the wrong spot or a cabinet that blocks the door swing.

If your toilet is part of a bigger job, tie its carpentry to the rest of the flat's custom work so finishes match and the spend stays sensible under one coordinated plan.

When the bathroom, kitchen and wardrobes are planned as one whole-home customization, the small spaces stop fighting each other and the whole flat feels bigger than the floor area suggests. If you're sketching your own HDB Renovation, it helps to have a team that builds the storage around how your household really lives.