What Is the Minimum En-Suite Size?

Minimum Layout (1.5m × 2.2m = 3.3m²)

This tight layout fits:

• Shower: 800 × 800mm tray or wet room area
• Basin: Wall-hung 450mm projection
• WC: Short-projection close-coupled or wall-hung

Everything is compact but functional. Use a sliding or bi-fold shower door to save space.

Comfortable Layout (1.8m × 2.7m = 4.86m²)

• Shower: 900 × 900mm enclosure
• Basin: 550mm vanity unit with storage
• WC: Standard close-coupled
• Room for a towel radiator and proper clearances

Space-Saving Tips

• Wall-hung WC: Saves ~100mm floor depth and is easier to clean
• Wall-hung basin: Frees floor space and looks modern
• Wet room: No shower tray means the room feels larger
• Pocket or sliding door: Saves the door swing arc
• Corner basin: Uses otherwise dead corner space
• Recessed shelving: Built into stud walls for storage

Building Regulations

There is no specific minimum room size in Building Regulations, but:

• Adequate ventilation required (extract fan or openable window)
• Electrical zones around baths/showers must be observed (Part P)
• Waterproofing (tanking) needed in shower/wet room areas
• Waste pipe runs and soil stack connection must be feasible