In Germany, every resident staying for more than three months must register his/her residency with the local authorities usually at the nearest town hall (Einwohnermeldeamt or Bürgeramt).
When: within two weeks after arrival, even if you are living in temporary accommodations, and within two weeks after each move.
Registration Certificate: You must save your Registration Certificate (Anmeldebestätigung) for your entire stay in Berlin.You will need to present it every time you go to the Berlin Foreigners Registration Office (Ausländerbehörde) and for many daily activities such as opening a bank account.
You can ask your landlord which registration office is near to your place.
Please note: In the application form, you will be asked about your church affiliation. If you state one, German church tax, which amounts to eight or nine percent of your payable income tax, will automatically be deducted.
The Berlin Office of the Integration and Migration Commissioner is also a contact point if you need assistance with matters pertaining to foreigners and integration or with legal or social questions. These advisory services are free of cost. The counselor provides immediate clarification of cases in which there are doubts, as well as assistance with problems and emergency situations.
Each District Office ("Bezirksamt") of Berlin has its own Integration Commissioner who is available to you for advice and assistance.