This is the best currently available data: Total New Build Completions, as per records lodged on EPC register 2016 2017 2018 2019 2020 Total Houses 11,230 11,790 14,460 16,580 10,950 65,010 Flats 5,460 5,290 5,590 7,060 4,500 27,900 Total 16,690 17,080 20,050 23,640 15,450 92,900 Number of new build completions connected to heat networks 2016 2017 2018 2019 2020 Total Houses 80 210 120 150 70 620 Flats 400 500 300 840 220 2,250 Total 470 710 410 990 290 2,870 Share of new build completions connected to heat networks 2016 2017 2018 2019 2020 Average Houses 1% 2% 1% 1% 1% 1% Flats 7% 9% 5% 12% 5% 8% Total 3% 4% 2% 4% 2% 3% Source: Management information as extracted from the EPC database {December 2020, 2020 data accessed July 2021}, published and available at statistics.gov.scot : Domestic Energy Performance Certificates - Dataset to Q4 2020 S6W...