Statutory guidance

Overheating: Approved Document O

Building regulation in England setting standards for overheating in new residential buildings.

• From: Ministry of Housing, Communities and Local Government and Department for Levelling Up, Housing and Communities
• Published: 15 December 2021
• Last updated: 15 June 2022
  Show all updates

  1. 15 June 2022

     Added Approved Document O frequently asked questions.

  2. 25 February 2022

     Republished with corrections which can be found in Circular 01/2022 - https://www.gov.uk/government/publications/building-regulations-in-england-circular-012022 Minor misprints have been corrected.

  3. 15 December 2021

     First published.

Applies to England

Documents

Overheating: Approved Document O

Ref: ISBN 978-1-914124-80-8

PDF, 3.39 MB, 44 pages

Approved Document O: Overheating, frequently asked questions

https://www.gov.uk/guidance/approved-document-o-overheating-frequently-asked-questions

Details

Since April 2023, the Building Safety Regulator has a duty under the Building Safety Act 2022 to keep under review the safety and standards of all buildings in England, which includes advising government on updates to the Approved Documents.

This Approved Document covers the overheating mitigation requirements of the building regulations as set out in Part O of Schedule 1 to the Building Regulations and in a number of specific building regulations. Technical guidance is contained in Approved Document O. Approved Document O applies to new residential buildings.

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