• DesignBuilder Software - Developed specifically to simplify the process of building simulation, DesignBuilder is a state-of-the-art software tool that allows you to rapidly develop and compare the function and performance of your building designs.
• The Register of Low Carbon Consultants has been developed by CIBSE Certification to provide the market with a supply of professionals whose competence in low carbon design, operation and energy assessment has been tested and is registered.
• National Calculation Method - BRE's web pages on SBEM - Simplified Building Energy Model.

For Building Regulations Part L2A and L2B and second tier documents please see our Downloads / Reading Materials page.