In the near future I will move in to a private-owned apartment and that means I will have to arrange all the utility supplies (water, gas, electricity). Can someone kindly inform me the procedures of registration to the providing companies? Also, is it possible to register to those companies before I register my new room address to the city office? I will get the room key by the end of this month but I have officially signed the contract and pay the initial fees, does it already allow me to register my room address in the city office before I get the key?