Sunday 03rd of July 09:22:29 PM GDsap   News
GD Tool for Non Domestic buildings

Important notice

Please note that the current version of the GD-Tool to be used for Green Deal assessments is the same current version of the iSBEM software used for compliance and EPC assessments, and this can be downloaded from This version of the software has been approved for the creation of live Green Deal Advice Reports, which means that:
  • Qualified non-domestic Green Deal Advisors can use this tool to undertake Green Deal Assessments and lodge them onto the Landmark Register for England and Wales.

  • Advisors will first need to have registered their credentials on the Register before they can lodge an Advice Report. Please see the Green Deal Advisor Checklist for advice on this process.

  • Any Green Deal Advice Reports successfully lodged onto the Register will be valid for use with a future Green Deal Plan.


This website has been set up to provide access to the government's Green Deal assessment tool for non-domestic buildings. The tool has been developed by BRE for the Department for Business, Energy, and Industrial Strategy, based on the existing energy calculation tool SBEM.

The iSBEM software tool for Green Deal:
  • Allows the advisor to tailor the model to the building occupier's actual operating regime by unlocking the standard parameters in the NCM Activities Database;
  • Enables the advisor to more easily explore and document the savings in energy use resulting from the installation of one or more energy efficiency measures, in one or more packages of measures;
  • Accepts information on fuel costs, so as to calculate the approximate value of these energy savings;
  • Provides a means to normalise the calculated energy use data against measured fuel consumption, adjusting for the effects of energy management practices.
  • Display a preview of the Green Deal Advice Report to show to the customer prior to lodgement.

To access the tool, go to the Download page of and follow the instructions.
The BRE development team would welcome feedback on the tool through the Feedback page of this site, including any bug reports. Please note that you must be logged in to submit your feedback. Thank you.

To continue, please choose an option from the menu on the left.

BRE on behalf of BEIS.