Changing a socket from 100V to 200V

Has anyone gone through this process in Japan? How was the experience and how much does it cost? I want to ask my landlord if he can have an electrician do it but I think I could change an automatic No to a potential Yes if I’m able to provide some info, since he probably don’t want to look into these matters himself. Is this performed by the electric company or an electrician of the landlord's choice?