Construction Regulations for a Bathroom

Construction Regulations for a Bathroom
  • Opening Intro -

    If you are looking to build a new bathroom suite in your home, the likelihood of you needing planning permission is rather slim; however, if your new bathroom is part of a house extension, you will have to apply.


To help you on your way, he’s a few starting points you need to consider before you start on the refurbishment and construction of a new bathroom.

Go green

When choosing your bathroom furniture, appliances and fittings, opt for energy efficient (A rated) goods. For example, aerated taps, which mix with the air will see less water be used. Consider how much water you are going to be using each day. Opt for low flush toilets, low flow showers and basin taps and go for a smaller capacity bath.

Refurbishing/moving your bathroom

Reworking your bathroom with new units and fittings doesn’t require you to get planning permission however, any changes to the drainage or electrical works, may require you to seek approval. If you are moving a bathroom to a different room in the home, you may need to seek approval to ensure that the room has adequate ventilation and drainage, as well as meeting the requirements of structural stability and fire and electrical safety.

Floor structures

If you are changing your bathroom’s floor structure from one flooring to another, you may need to get a structural engineer or surveyor to assess the floor before you start the work. It may be the case that work is needed under the floorboards in order to strengthen it in order to hold your new flooring.

Enough ventilation

All rooms in your home should have adequate ventilation for health reasons. A window can be used as one of the ventilation options in your bathroom, however, if there is no window available to open, a mechanical extractor fan needs to be installed so that condensation is reduced and smells are eliminated. A bathroom needs 15l/s with a 15 minute overrun if there is no window. A WC needs 6 l/s with overrun.

Minimum area requirements

  • Bath: Minimum required area is 1.10 meters by 0.70 meters.
  • Shower: Enclosed in three sides with dimensions of 0.90 meters by 0.70 meters. Minimum shower head height is 2.10 meters
  • Toilet: Clearance of 20cm (8 inches) from each side. At least 0.70 meters (26 inches) in front.

Seek professional help if unsure

If in doubt, don’t do. The refurbishment of a bathroom can be a challenging and complicated job, especially if you have never done it before. If you do need professional help/advice, then make sure you get it as the last thing you want is a bathroom that’s out of action for longer than planned because of the messes you’ve made doing something you were unsure of. There are lots of things to consider such as the drainage, electrics, eco-friendly fixtures and appliances and so it’s important to get it right first time so you do not have to redo it again.

This post was provided by retailers of bathroom products The Bath House Online.



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