This Approved Document provides guidance on how to comply with Part F to Schedule 1 to the Building Regulations covering ventilation and applies to dwellings only, and takes effect on 15 June 2022. It does not apply to work subject to a building notice, full plans application or initial notice submitted before that date, provided the work is started on site before 15 June 2023.

ADF1: Dwellings (2021 edition) contains the following sections:

• Ventilation provision
• Minimising the ingress of external pollutants
• Work on existing dwellings
• Commissioning and providing information
• Key terms
• Performance-based ventilation
• Completion checklist and commissioning sheet
• Checklist for ventilation provision in existing dwellings

The guidance in this Approved Document only relates to England and applies to dwellings only. In a mixed-use building, Approved Document F, Volume 2: Buildings other than dwellings should be consulted for building work in parts of the building that are not dwellings.