Tiny House GuideBack to Building

The Bathroom

Everything that goes into a tiny home bathroom. Choose a topic below — more are being added over time.

Tiny house bathroom

The current trend

Tiny bathrooms are moving toward warm, spa-like sanctuaries rather than cold, all-white boxes. Popular right now: open wet-room layouts where the whole room is waterproofed around a central drain; waterless toilets that free the layout from plumbing runs; wall-hung and corner fixtures that open up floor space; natural light from a skylight or high window to make the room feel bigger; and warmer finishes, timber, earthy tones, soft curved mirrors and mixed metal tapware, with smart touches like humidity-sensing exhaust fans and digital shower controls. The throughline is doing more with less: every fixture earns its place.

Toilets

Composting, incinerating, flush and more — with pricing and suppliers.

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Shower

Corner showers, wet rooms, and water-saving options.

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Bath

Compact soaking tubs and whether a bath suits a tiny home.

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Basin & vanity

Wall-hung and corner basins that save floor space.

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Flooring & heated floors

Waterproof, slip-resistant floors and underfloor heating.

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Ceiling & roofing

Moisture-resistant linings and watertight roof penetrations.

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Exhaust & ventilation

Fans and airflow to prevent mould in a wet space.

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Lighting

Damp-rated fittings and efficient LED options.

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Electrical

Safe, compliant wiring and power points in a wet area.

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Waterproofing

Membranes, drainage and wet-room sealing.

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Storage & finishing touches

Cabinets, shelving, towel rails and clever small-space storage.

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Paint

Moisture- and mould-resistant paint for walls and ceiling.

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Doors

Space-saving sliding, pocket and bifold doors.

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Skylight & roof vents

Natural light and ventilation through the roof.

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Septic & waste

Septic systems and greywater for flushing setups.

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Smart space-saving design

Keep it proportionate. A common rule of thumb is that the bathroom should take up no more than about a quarter of the home's floor space. Many tiny bathrooms land around 1.5 by 2.4 metres, though they can be smaller.

Go wet-room. Waterproofing the whole room and using a central floor drain reclaims the space a shower enclosure would take, and makes a small room feel open. A folding glass screen or simple curtain keeps the toilet zone dry.

Choose waterless where you can. A composting or other waterless toilet removes plumbing constraints, so the toilet can go where it suits you, including in a corner, freeing the rest of the room for a wider shower or storage.

Wall-hung and corner fixtures. Mounting the toilet and basin off the wall, or tucking a curved basin into a corner, opens up floor area and makes cleaning easier.

Borrow light. A skylight or a high, narrow window adds light and ventilation without sacrificing wall space or privacy, and natural light is the single best way to make a small bathroom feel larger.

Build storage upward. Recessed mirrored cabinets, floating shelves, and hooks carve out storage without eating floor space.

Ventilate hard. Small, well-sealed bathrooms trap moisture, so a good exhaust fan (ideally humidity-sensing) is essential to prevent mould, especially if there is no opening window.

Note: bathroom waterproofing, plumbing and electrical work must meet local standards and generally needs licensed trades. Product names are examples only, not endorsements. Last updated: June 2026.