Interactive FHS Tools
Free interactive tools to help you navigate the Future Homes Standard. Check transitional arrangements, look up fabric specifications, and find your compliance route.
FHS Transitional Arrangements Calculator
Find out whether the Future Homes Standard or Part L 2021 applies to your building project
FHS Fabric Specification Lookup
Look up confirmed U-values and air permeability requirements for new dwellings
SAP 10.3 vs HEM Compliance Route
Determine whether SAP 10.3 or the Home Energy Model is right for your project
These tools are based on the published Future Homes Standard regulations and Approved Documents. They are provided as a helpful starting point, not as formal compliance advice. For full details on each topic, follow the links within each tool to our comprehensive guides.