It was only after his death in 1584, when the Principality of Calenberg-Göttingen fell to Braunschweig-Wolfenbüttel in inheritance, that under Duke Julius the monastic system was reorganised according to the Wolfenbüttel Church Constitution of 1569.

The General Hanoverian Monastery Fund (Allgemeine Hannoversche Klosterfonds), the predecessor organisation, experienced a significant increase in assets as a result of the Reichsdeputationshauptschluss in 1803, when the Prince-bishoprics of Hildesheim and Osnabrück were dissolved and added to the Kingdom of Hanover in 1815.

In addition, the Chamber owns about 800 buildings, most of which are listed, including the Calenberg nunneries of Barsinghausen, Mariensee, Marienwerder, Wennigsen and Wülfinghausen.

The administration of the four foundation assets by the Hanover Monastic Chamber also includes the fulfilment of performance obligations towards numerous Protestant and Catholic parishes.

In return, the AHK was released from its obligation to pay benefits to the University of Göttingen and the excess claim was compensated by the transfer of agricultural and forestry assets.

In addition, the chamber advises the convent foundations of Bassum, Börstel, Fischbeck and Obernkirchen in administrative, building and other specialist matters.

From the economic surpluses of the asset management, the Hanover Monastic Chamber allocates subsidies of about €3 million annually for projects in Lower Saxony in accordance with the ecclesiastical, social and educational purpose of the foundation.