In Denmark, the building sector is responsible for the emission of 5.5–6.4 million tons of CO2 annually. This number is based on emissions in connection with the construction, renovation and maintenance of all buildings in Denmark, including emissions related to the production of building materials. In 2021, a new national strategy for sustainable construction imposed caps on CO2 emissions from new building projects. This upper limit will be incrementally reduced every year until 2030.