http://skyscraperpage.com/cities/?buildingID=65621
Correction: Building shows no height.
Height roof:
158 meters
Source:
http://www.skyscrapercenter.com/buil...re-sofia/25617
Note:
The official height originally was 154 meters however, by measuring the building in the automatic satelital rendering (done by google earth) i found the Skyscrapercenter estimation to be more accurated, because these renderings match most of the known heights of buildings around the area.
Therefore i would suggest the use of 158 meters.