[1] A house was finally purchased in 1731 on St. Mark's Square, next to the two-storey building formerly used by Pavao Ritter Vitezović as an official printing residence.

[2] The house was severely damaged in a fire during the same year, so a new plan was drawn up by a local builder Matija Leonhart, which envisioned a new baroque palace with a main hall suitable for diet sessions, which was first used on 6 May 1737.

[3] From 1765, the building also took under its roof the office of the Zagreb county and the premises became more cramped over time, which gradually increased demand for more space and consequently forced temporary relocations of the sessions.

[1] The current building retains the floor plan of this phase, including the main hall, and sessions continued to take place there in spite of changing ownership.

[1] A public tender to incorporate all of this into a single building was granted to architects Lav Kalda [hr] and Karlo Susan, and was finalised in 1911.