Process and cost factors
Where building regulations touch a bathroom project
What drives the timeline
Electrical work in a bathroom's water-risk zones is notifiable and normally needs to be certified by someone competent to do so.
New drainage connections, particularly for a new en-suite or moved WC, may need building control involvement depending on the route.
Ventilation changes and any structural alteration, such as forming a new doorway or removing a wall, have their own regulatory requirements.
A completion certificate or relevant compliance documentation should be retained with the property records for any notifiable work.
Worth checking on site
Ventilation changes and any structural alteration, such as forming a new doorway or removing a wall, have their own regulatory requirements.
Frequently asked
Does a straightforward swap need building control?
A pure like-for-like swap with no new wiring or drainage changes usually falls outside notifiable work, but it's worth confirming for your specific job.
What happens if work isn't properly certified?
It can cause problems at the point of sale, since buyers' solicitors often ask for documentation covering notifiable work carried out.
Want this scoped properly before you commit?
We look at the room, check the services, and put the scope in writing so you can compare like with like.