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How many buildings are net zero?

There are currently only around 500 commerical net zero buildings (e.g. offices) and 2,000 net zero homes around the world – less than 1 per cent of all buildings. But we need all buildings – literally billions – to be net zero by the year 2050. The current global building stock of 223 billion square meters, is projected to almost double to 415 billion square meters by 2050, adding to this challenge.

Furthermore, current renovation rates amount to less than one per cent of existing buildings each year. To achieve universal net zero carbon buildings by 2050, renovation rates must increase by 3 per cent every year starting in 2017, and must accelerate for every year of delay.