As soon as you have found accommodation, you have to register with the local Residents' Registration Office. The office gives you a written confirmation of Registration (Meldebestätigung). After that, you can apply for your residence permit.
Every international student who moves to Germany has to register with the residents‘ registration office – usually within one week. At the Residents‘ Registration Office you have to fill out a registration form. Then you receive a written confirmation of registration. Be sure to keep this document because you will need it to obtain a residence permit from the foreigners’ registration office.
As soon as you have found accommodation in Germany, you have to register with the local residents‘ registration office. In some cities, the residents‘ registration office (Einwohnermeldeamt) is also called Bürgerbüro or Bezirksamt. You should register within one or two weeks (varies depending on the requirements of the local residents‘ registration office), or you could have to pay an administrative fine (Bußgeld). Sometimes you don’t get an appointment within one or two weeks. What is important is that you booked an appointment as required within one or two weeks. You can usually arrange an appointment .