On 26 June 1818 Schinkel commissioned the Royal Prussian Iron Foundry (Königlich Preußische Eisengießerei) to cast the pieces for the monument, including its statues. The foundry estimated costs of thaler 20,646. After negotiations on 27 August 1818 the merchant Gottfried Wilhelm August Tietz, the farming burgher Johann Friedrich Götze and Christian Weimar (Weymann) sold the top of the Götze'scher Berg (today's Kreuzberg) measuring 1.5 Prussian Morgen () and an access road branching off from Methfesselstraße. On 4 September 1818 the king approved the stipulated price of thaler 1,100 and an additional 400 as compensation for fixtures. The adjacent land, measuring 72 Morgen (), remained property of Götze, Tietz and Weimar. The king confirmed the price.