The Next Leap Toward Net Zero
The Future Homes Standard (FHS) and Future Buildings Standard (FBS) represent the most significant tightening of building regulations in UK history. Scheduled for full implementation in 2025/2026, these standards aim to ensure that new buildings are 'Net Zero Ready'—meaning they will require no further retrofitting as the electricity grid decarbonizes. This article examines the impact on SAP and SBEM assessments and the death of fossil fuels in new developments.
No More Gas: The All-Electric Mandate
The Future Buildings Standard mandates that new non-domestic buildings must produce 75-80% fewer carbon emissions than those built under 2013 standards. This effectively bans the installation of gas boilers in new developments, making Heat Pumps and high-performance heat recovery (MVHR) the mandatory baseline for energy assessments.
Fabric First 2.0
The FBS pushes U-values to their physical limits. We discuss the challenges of achieving these levels without creating 'overheating' risks in summer, leading to the increased importance of Part O (Overheating) assessments.
Impact on SAP and SBEM Software
The software used for EPCs is being overhauled to prioritize 'Primary Energy' and 'Carbon' over simple cost. We explain why a design that 'Passed' in 2023 will likely 'Fail' under the 2026 FBS.
The 'Net Zero Ready' Definition
A 'Net Zero Ready' building must have a low-temperature heating system (max 55°C flow) to ensure it can operate efficiently with a heat pump in the future.
Conclusion
The FBS is a paradigm shift. Developers must move away from 'compliance at the finish line' and integrate energy assessors into the design team at the concept stage.