Question to the Ministry of Housing, Communities and Local Government:

To ask the Secretary of State for Housing, Communities and Local Government, what restrictions exist on installing air conditioning under the (a) planning regime and (b) building regulations regime in new build dwellings.

The Building Regulations are set in performance terms, to provide developers with the flexibility to select the most appropriate solutions for their developments. Part O of the regulations ensures that new residential buildings are built to mitigate the risk of overheating. Mechanical cooling can be used to meet regulations, however, given the Government’s net zero commitment, our preferred means of mitigating overheating is through passive means. Developers must demonstrate that all possible passive means of cooling a dwelling have been implemented before adopting mechanical cooling,

As part of the Future Homes and Buildings Standard consultation, which closed in March 2024, we sought evidence on whether current overheating standards are appropriate or require amendment. The Government will set out the evidence it received on Part O during this consultation and its response to this in Autumn 2025, when the Future Homes and Buildings Standard consultation response will be published.