He designed important public buildings such as the Frankfurt Main Station and the New Town Hall in Hannover, often in the style of Neo-Renaissance.

Born in Burg bei Magdeburg, Eggert studied with Heinrich Strack at the Bauakademie in Berlin.

[1] Eggert served as Oberbaurat in the Ministerium für öffentliche Arbeiten [de] (Ministry of Public Works) of Prussia in Berlin, where he was mostly responsible for church buildings.

He was in conflict about the design of the Prunkräume (Representative Rooms) of the Town Hall with Christian Heinrich Tramm who had designed the Welfenschloss (Welf palace, now the main building of Leibniz University Hannover), As a result, his contract was cancelled in 1909.

[4] In the central Frankfurt Gallus quarter a section of a street called after Camberg was renamed Hermann-Eggert-Straße in 2009.