Reading through similar queries:
http://doineedpermission.co.uk/upstairs-toilet/ – http://doineedpermission.co.uk/cloakroom-wc/ – http://doineedpermission.co.uk/change-of-cupboard-to-toilet/
The advice is no building warrant necessary so long as:
•Not in a listed building.
•Not in a conservation area.
•You are not altering the mains drainage.
•All works are carried out to the building regulations.
•Is not part of a flat, apartment, or tenement.
However, contrary advice is given in:
The formation of an ensuite would have required a Building Warrant, due to changes in plumbing, ventilation etc. However, it is not uncommon for this type of work to be done without a Building Warrant approval. In the majority of cases a retrospective application called a ‘Letter of Comfort’ can be obtained from the Council without too many issues, on the proviso the work is up to standard.
@Matthew Hilton MRTPI, HHL Scotland
Also, in the Regulations Tech Handbook (2015) works not requiring a warrant (Sched 3)
11. Any work associated with the provision of a single sanitary facility, together with any relevant branch soil or waste pipe.
Exception: Any work associated with a watercloset, waterless closet or urinal.
Can you please clarify, as the Tech Handbook seems to imply that additional WCs require a building warrant.
Question Posted By – sean In Area – Scottish Islands
This question has been asked in a Scottish region any response below will be specific to Scottish Planning Permission or Building Regulation advice.