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Future Buildings Standard

Interactive Tools

Free interactive tools for the Future Buildings Standard. Check compliance routes, look up notional building specs, and calculate solar PV requirements.

Compliance Route Finder

Answer a few questions about your project to find out whether you need SBEM, dynamic simulation modelling, or a simplified compliance route.

Notional Building Lookup

Look up the notional building specification for your building type – U-values, heating system, lighting efficacy, and ventilation parameters.

Solar PV Calculator

Calculate the minimum solar PV capacity required for your non-domestic building under the FBS 40% PV rule.

These tools are designed to help construction professionals navigate the technical requirements of the Future Buildings Standard. Each tool draws on the specifications in Approved Document L Volume 2 (2026 edition) and the National Calculation Methodology.

All tools run entirely in your browser – no data is sent to any server. They are provided as guidance aids and do not replace professional assessment.