GBC is a Whole Building, Elemental and Component k and U value Target setter and Calculator with Bill of Quantities (Cost planning & Pricing). Made for New Build and Refurbishment, Domestic and Non-Domestic. Adding Elemental Condensation check and Overheating, Embodied Energy, Embodied Carbon and Sequestered Carbon calculators, as well as plastic free, waste minimisation, reclaim and reuse calculators. And a whole lot more. It gives small design practices greater autonomy and capability to address those and many other issues.