THE SHORT ANSWER

Measure the finished room, mark the door swing and required fixture clearances, retain practical service positions, place the largest fixture first, then test storage, towel reach, ventilation, lighting, and cleaning access.

The method

Step by step

01

Measure the finished envelope

Record wall lengths, ceiling changes, window and door positions, service points, and thickness added by finishes.

02

Place the critical clearances

Protect comfortable space at the toilet, basin, shower entry, drawers, and door before adding decorative features.

03

Coordinate wet and dry zones

Keep towels, storage, outlets, and frequently used surfaces away from direct spray while maintaining easy reach.

04

Test the room in use

Walk through entry, showering, drying, grooming, cleaning, and laundry tasks. Check each door and drawer in both open and occupied conditions.

Before you start

Expert tips

  • A mirrored cabinet can combine shallow storage and task lighting.
  • Wall-hung elements expose more floor and simplify cleaning.
  • A wider shower opening may be more useful than a tiny extra cabinet.
People also ask

Common questions

Does a small bathroom need small tiles?+

No. Larger tiles can reduce grout lines, while smaller tiles can suit falls and curves. Layout and proportion matter more than a single size rule.

Should the bathroom door open outward?+

It can improve usable space and emergency access, but local rules, circulation, and adjacent rooms must be checked.

Can I move the toilet?+

Often, but waste pipe routing, floor structure, ventilation, approvals, and cost can make it a major change.

Primary references

Sources & further reading

We link to official building-code, government and public-health material where a technical or safety claim needs authoritative context. Local rules and adopted code editions can change.

  1. Australian Building Codes BoardWaterproofing in housesNational Construction Code overview for domestic wet-area waterproofing.
  2. New Zealand Building PerformanceBuilding Code: E MoistureOfficial requirements for surface water, external moisture and wet areas.
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Know your limit

Stop if the work involves structural uncertainty, hazardous materials, heights, live services, gas, serious water damage, or regulated work. Local rules differ—use an appropriately licensed professional where required.