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Written question asked by Tim Farron (Liberal Democrat) on Tuesday, 6 January 2026, in the House of Commons. It was due for an answer on Thursday, 8 January 2026. It was answered by Samantha Dixon (Labour) on Wednesday, 14 January 2026 on behalf of the Ministry of Housing, Communities and Local Government.

Air Pollution: Pollution Control

Question

To ask the Secretary of State for Housing, Communities and Local Government, what Government guidance there is on technical standards to be applied in dwellings and other buildings to improve indoor air quality.

Answer

The government sets standards for indoor air quality mainly through Parts F (Ventilation) and L (Conservation of fuel and power) of the Building Regulations which apply primarily to new buildings with detailed guidance provided in Approved Documents. Approved Document F sets minimum ventilation requirements to provide fresh air and reduce risks from pollutants, moisture, condensation and mould. These standards were strengthened in 2021 and took effect in June 2022.

Indoor air quality in existing properties is addressed separately, including through Awaab’s Law which requires social landlords to investigate and remedy damp and mould hazards within set timescales. Government policy is also informed by the Committee on the Medical Effects of Air Pollution (COMEAP) which provides independent advice on air quality and health.

Secondary information

Type
Written question
Reference
103217
Session
2024-26
Subjects
Air pollution Buildings Pollution control Standards
Link
View this Written question on www.parliament.uk