Technical Booklet R Access to and Use of Buildings·Page 8·93
Sanitary accommodation in extensions
Requires suitable sanitary accommodation to be provided in extensions where sanitary accommodation is provided in the main building.
Where sanitary accommodation is provided in a building, reasonable provision shall be made for the provision of suitable sanitary accommodation in any extension to the building.
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/Technical Booklet R - Access to and Use of Buildings.pdf