Part O - Overheating
Approved Document O
Publication title: Approved Document O - Overheating (2021 edition)
Date published: December 2021
Date valid from: 15 June 2022
Approved Document O covers the overheating improvement requirements as set out in Part O of Schedule 1 of the Building Regulations, and in a number of specific building regulations that also includes guidance on providing means of removing excess heat from residential buildings.
This approved document takes effect on 15 June 2022 and is for use in England. The guidance in this approved document applies to new residential buildings only
The Merged Approved Documents1 (not yet containing Approved Document O, see below for non-consolidated version).
A consolidated version of the individual Approved Documents published by the government, now presented as a single, searchable PDF.
Approved Document O – Overheating (2021 edition)2 This approved document takes effect on 15 June 2022.