In 1865, Haller married Antonie (née Schramm, 1846–1925) and had a son, Ferdinand (1871–1963), who was deputy director of the HAPAG, and 3 daughters, Antonie and Marie-Ellen.[1]
In 1861 Haller returned to Hamburg and opened an office. He was 10 years long chairperson of the professional organisation of architects and member of the Hamburg Parliament for 14 years. In 1880 Haller and 8 other architects founded a syndicate and presented the Senate of Hamburg a new draft for the Hamburg Rathaus. In 1886 the construction started.[1]
Haller planned more than 562 building projects.[1]
Influenced
Afrikahaus built from 1900–01, in 2004.
The office building of the HAPAG, built 1901–03, in front of the Binnenalster lake, in 2006.