Technical Booklet L Combustion Appliances and Fuel Storage Systems·Page 6
Workplace Regulations and Common Parts of Flats
The Workplace Regulations apply to common parts of flats where employees such as cleaners, wardens and caretakers work, and may require provisions even where Building Regulations Part L does not apply to dwellings themselves.
The Workplace Regulations apply to the common parts of flats and similar buildings if people such as cleaners, wardens and caretakers are employed to work in these common parts. Where the requirements of the Building Regulations that are covered by Part L do not apply to dwellings, the provisions may still be required in the situations described above in order to satisfy the Workplace Regulations.
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/Technical Booklet L - Combustion Appliances and Fuel Storage Systems.pdf