Declare your new address.
If you go abroad for more than one year, you have to let the city know.
Will you be absent from your address for more than three months, but plan to return within a year? If so, you do not need to change your address. You do need to report your temporary absence and your return to the city.
Stadskantoor Professor Van Overstraetenplein 1 3000 Leuven