Rubuta ci gaba don wannan sakin layi - Sojojin mamaye na Burtaniya sun daukaka lardin zuwa jihar Schleswig-Holstein a shekarar 1946. Shekaru daya da rabi (1949-1951) Groß-Hansdorf-Schmalenbeck ya kasance wani ɓangare na gari na Ahrensburg, kafin ya sake samun matsayin birni, a ƙarƙashin sunan Großhansdorf yanzu. Mazaunan sun bazu a yankin Schmalenbeck (c. 60%) da kuma garin Großhansdorf (ba bisa ƙa'ida ba: Alt-Großhansdorf; c. 40%). Bayan mummunar lalacewa ta Bombing na Hamburg a yakin duniya na biyu
da yawa marasa gida Hamburger sun koma Großhansdorf.