Government timelines
Introduction of Parts F, L, O and S 2021
June 15, 2022
% complete
Approved Documents come into force in 15 June 2025
Projects and outputs
Convene working groups
October 6, 2021 - February 2, 2022
% complete
Convene cross-sector oversight group and specialist expert groups
Review and confirm stakeholder needs
December 1, 2021 - May 1, 2022
% complete
Confirm requirements for guides, design tools, method of communication and project delivery
Technical Guidance
February 20, 2022 - March 1, 2023
% complete
Part L (Masonry), Part L (Timber), Part L (apartments), Part O Technical guide, Part O Builder's guide, Part S guide, Builder's guide to heat pumps, guide to photographic evidence, Customer guide to heat pumps, Builder's guide to infrastructure
Digital FLOS guidance
March 1, 2022 - August 1, 2022
% complete
Create introduction to FLO&S and maintain on website
Part O calculator
June 1, 2022 - October 1, 2022
% complete
Part O simplified Method calculator tool
Maintain issues log
June 1, 2022 - June 1, 2023
% complete
Identify the practical implications of the new regulations and how they are likely to interact. Collate issues that developers are experiencing and feed back to DLUHC/BEIS.
Update guidance to SAP 10
November 1, 2022 - May 1, 2023
% complete
Update the guidance to reflect additional technical information (such as the release of SAP10) and the full specification for the FHS.
Project review
May 1, 2023 - July 1, 2023
% complete
Review project outcomes and engagement.