SAP calculations, or is that calculations carried out by a sap?

Now an absolute necessity for any new building project.  The predicted (nice word for guessed) insulation properties of, er, properties need to be submitted for our friends at planning control.

Apparently this entails a very clever person, armed with a scientific calculator and the ‘who’s who of U-Values’, to provide energy consumption figures or an environmental impact rating.

Unfortunately my very clever person also happens to be very popular.  So much so, that’s all building control are now waiting for from me and my architect. 

Not to worry thought, he’s actually just provided the calcs, and his invoice (must be a much easier calculation). Sadly I’m not sure he used my drawings, as he has assumed that I’m going to install a gas fired boiler, easy mistake to make if you ignore the oil fired one on the drawing.

Too late for me, but these fellows seem a little more clued up.  I just hope my back-of-a-fag-packet expert won’t be too long with the official guess.