SBToolCZ new version: An analysis of a few updated environmental parameters on a case study

In the past decade, the world has faced many challenges, including the effects resulting from human-induced greenhouse gas emissions. In the construction industry, efforts are being made to combat climate change and protect the environment by developing rating systems aimed at designing sustainable buildings. One of these tools is SBToolCZ, the Czech national certification used to assess the sustainability of various building typologies. Still, as buildings are becoming more energy-efficient, which should ensure low carbon emissions, the environmental impacts of building components should be methodically examined. This paper compares two versions of the tool specifically addressed to office buildings – the one developed in 2011 and the recently updated version developed in accordance with the new priorities indicated by the European Green Deal. The comparative analysis investigates what has been changed, focusing on six environmental impacts calculated for the A1-A3, B4 and B6 LCA stages applied to an office building. On this basis, the paper aims to assess two different SBToolCZ versions and understand how the Methodology has been modified considering a case study and six environmental parameters.