A Year On: Progress on Parts L, F & O Whitepaper
In June 2023, the new Building Regulations Parts L and F (covering energy efficiency and ventilation respectively), as well as a new Regulation mitigating consequent overheating in residential projects (Part O), were introduced as mandatory requirements. The industry was given a year’s run up to this deadline, as although the Regulations were introduced in June 2022, schemes which had submitted planning by that stage didn’t need to adhere to the new, more stringent requirements for built fabric and efficiency generally.
There are a host of challenges for designers and contractors in order to bring mainstream house designs up to this kind of level of performance, not least the ways to adopt energy efficiency designs which do not drastically change their appearance for customers. One potential outcome, for example, could be smaller or fewer windows in order to increase energy efficiency while reducing overheating.
As the industry confronted the June 2023 deadline for the tighter standards becoming mandatory (alongside the new Part O), we surveyed architects to test their perceptions, largely focusing on new build issues. We discovered a wide range of responses from these practitioners, the majority of whom were involved in new housing developments. Some were potentially expected, however others were less so.
We wanted to find out their understanding of, as well as opinions on, the new changes, their views on how relevant they are to architects, and the design approaches they are already taking to meet the new Parts L, F and O. We not only looked at their attitudes towards the challenges and bene ts of solutions for new homes, but also for the non-domestic sector.
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