The Holstein Schuld- und Pfandprotokolle contain all changes and encumbrances on properties [Grundstücke]. They continued until the introduction of the Prussian land registry. Sales, inheritances, retirement, and occasionally marriage conracts can be found in these records. As properties often passed from father to son, they may contain valuable information in connecting generations. The Hamburg Staatsarchiv have volumes for Eppendorf, Ottensen, and Nienstedten. See archival source: Staatsarciv Hamburg. Many volumes are found in the Landesarchiv Schleswig-Holstein.
Land records: FamilySearch Library book Wegweiser zu den Quellen der Landwirtschaftsgeschichte Schleswig-Holstein. by Harry Kunz. The library needs Kreis Lauenburg and Kreis Rendsburg-Eckernförde.