Registration with the Municipal Authorities
When you shift your location within Germany, you are obliged to notify the authorities in the place where you have taken up residence; this must be done within two weeks of arrival.
This means that as soon as you have found a place to live, you must register your address at the city office of your respective place of residence.
If you live in the city of Giessen, the registration takes place at the Giessen city office.
You must bring your identity card or passport and a housing provider confirmation (confirmation from the landlord that you have moved in).