Once construction is complete and the final details have been confirmed, the assessor finalises the SAP calculation and creates the Energy Performance Certificate. The EPC provides a rating of energy performance based upon the dwelling as it has been built. The EPC must, by law, be displayed in a new dwelling put up for sale on the open market.
In addition there are other documents that are required by Building Control such as the SAP worksheet report and the SAP data input report. The assessor will provide all of these documents to the client to pass on to their Building Control officer to enable the completion to be signed off. The exact process here depends upon the location of your building as the system is different is some parts of the UK.