When you move into an apartment, you get a confirmation document from your landlord: the Wohnungsgeberbestätigung. You can't register your address without this document.

How to register your address in Berlin ➞

You get the Wohnungsgeberbestätigung from your landlord. If you sublet or live in a WG, the main tenant can also give you this document, but they need permission from the landlord1, 2.

This Wohnungsgeberbestätigung template is an official example from the city of Berlin. You can use a different template if it contains the same information1.