Buildings stand on a plot delimitated by the following streets: Jagiellońska, Stary Port, Pocztowa and Franciszek Ksawery Drucki-Lubecki in Bydgoszcz.

[2] The Bydgoszcz mail office has been planned to migrate from the streets adjacent to the Old Market to the other side of the Brda river, on a land belonging primarily to the military, where a complex of barracks and royal stables,[2] have been built in September 1773.

The casern was billeting the city-stationed squadron of the 7th Hussars regiment led by General Paweł Józef Małachowski.

[2] Gottfried Groschke, longtime director (1815-1847), had been designated in 1840 "Honorary Citizen of Bromberg: under his rule, post office staff doubled, and in the mid-19th century postal stations in the district were supported by 145 postillions looking after more than 400 horses, regular connections (by stagecoach and postal vans) linking Bromberg with, among others, Toruń, Gdańsk, Poznań, Inowrocław, Berlin and Königsberg.

[2] After 1871's victory during Franco-Prussian War and the improved financial condition of Kingdom of Prussia, Prussian authorities decided to expand the mail institution network across the country.

The main entrance to the courtyard stood on river side and its ornated gate survived preserved till today.

Another plot was acquired, with land and buildings between Jagiellońska and Franciszek Ksawery Drucki-Lubecki streets, belonging to the Customs Office.

After demolition of an old classicist building standing there, the construction of the new edifice started in 1896, according to the design of a team of architects led by Kleinfeldt and L. Neumann from Königsberg.

The premises were thus contained between four streets: Jagiellońska, Stary Port, Pocztowa and Franciszek Ksawery Drucki-Lubecki, the fourth side facing the Brda river.

Corner decorative portal topped with triangular pinnacle gables display a clock on both sides of which are placed original ceramic coats of arms (with mail and telegraph symbols).

[4] The view of the rear façade is alike the front but in a more simplified and devoid of color friezes or glazed details.

[4] The passage of time, acts of war and inappropriate reconstruction work resulted in the loss of part of the decoration on the facades of the building.

In the corner is preserved a surviving metal frame structure where was mounted the cable network of telegraph and telephone, topped with an ornate flèche from the date of construction of the facility "1885".