Is an EPC result likely to have changed?

Perhaps. Non-domestic EPC results may well differ slightly from a few years ago even although nothing in the building has changed. The current SBEM engine is version 4 and even since version 3.5 there have been changes made that will effect the way the calculation engine determines the EPC rating. We have found that the most recent SBEM version is likely to improve the rating a building achieves. Changes to the approved software method have reduced during 2013 2014 with the expectation that any further changes will be small so as to create a level platform for comparison.