This report investigates approaches for monitoring decarbonisation of the building stock and for setting whole life carbon limit values for buildings. It provides an overview of the approaches for monitoring decarbonisation and their strengths and weaknesses, such as data requirements and accuracy of assessment. 

 The assessment of setting limit values looks into aspects such as scope and coverage of the limit values and how such different aspects may affect the derivation of limit values. The report presents a set of recommendations for further advancing this. Thus, providing a foundation for further activities on monitoring decarbonization and setting limit values in and across the Nordic countries and Estonia.