Design-stage SBEM calculations, showing a pass, must be provided to Building Control before you start on site.
We shall assess the buildings based on the design-specification provided. If a pass is not achieved we shall put forward cost effective options to achieve a pass. For example, improvements to the mechanical and electrical specification, increase in insulation, better performance glazing, or a more air-tight construction (see air leakage testing).
Once a satisfactory specification has been agreed we shall issue design-stage SBEM reports for submission to Building Control.