The Swiss authorities online
If you are moving house, you are probably taking your car with you. You must change the address at which your vehicle and driving licence are registered at your canton’s road traffic office.
You must change the address at which your driving licence is registered within 14 days. If you are staying in the same canton, you don’t need to change your number plates.
When you move to a new canton, you must register your licence and vehicle at the road traffic office of your new canton within 14 days. You will need:
In Switzerland number plates are associated with the name and address of the car owner and not the car itself. When you move, you must exchange your number plates for new ones at the road traffic office of your new canton. You can go in person to return/exchange your number plates on the spot. You can also send the necessary documents by post and exchange your number plates at the post office of your new place of residence.
Be aware that costs vary from canton to canton.