Berlin
Bürgeramt Rathaus Mitte
Karl-Marx-Allee 31, 10178 Berlin
The city recommends deregistering by post, but you can also book a visit and finish it on the spot.
Complete the official deregistration form and include an ID-card or passport copy. Use extra forms for more than three people. Keep the confirmation for organisations that request proof of departure. Moving elsewhere within Germany normally requires registration at the new address instead.