Written Question·Ministry of Housing, Communities and Local Government·UIN 85779

Building Regulations: Windows

Tabled: 28 October 2025
Answered: 4 November 2025

Question

Sir James Cleverly

Conservative — Braintree

To ask the Secretary of State for Housing, Communities and Local Government, whether he plans to review Document O building regulations for windows, in the context of encouraging house building.

Answer

Samantha Dixon
Part O of the Building Regulations ensures new housing is built to mitigate the risk of overheating. This came into effect in June 2022.Since October 2023, the Building Safety Regulator has a statutory duty under the Building Safety Act 2022 to keep the s...
ⓘ

This is an extract from the Parliament API. Search the full answer on Parliament.uk (UIN 85779) →