WOBO has been informed that the revised NHBC Standards 2021 apply to all new homes registered with them where the foundations are started on or after 1st January 2021.
The most significant updates in this edition are to the following chapters. Watch their webinar on Standards 2021 to see the changes explained or read on-line for the details.
I would also draw your attention to their publication NHBC Technical Extra which contains technical developments and details and in particular the November addition which provides an update in respect of the UK ban on combustible materials in buildings over 18m