architect university professor
He studied architecture at the Vienna University of Technology under Peter von Nobile, and together with van der Nüll.
He is best remembered as the co-architect of the Vienna State Opera, together with Eduard van der Nüll. In 1843 he became professor at the Vienna Academy. Karl Freiherr von Hasenauer was one of his students.
Sicardsburg died in Weidling, Austria.