In contrast, the total usable space of newly completed dwellings grew by an annual 10.3% to 644,400 square metres in October-December, the National Statistical Institute (NSI) said in a quarterly report, citing preliminary data.
The highest number of residential buildings, 267, was completed in the district of Sofia, followed by Plovdiv with 230 and the coastal city of Varna with 174 buildings.
Houses held the largest share - 78.3% - of all new residential buildings completed in the fourth quarter, whereas apartment buildings accounted for 14.1%.