IC change of residential address

You are to change any address within 28 days of moving to a new residence be it you are in or out of Singapore. Since you stay with in law and no names are currently under your in law house, therefore no need to change address unless you require all mailing to be sent at in laws. I assume your name is currently at your mum's place? If that's the case it is fine though. After you get a house then you can change address. This is important, otherwise you will be fined. And to change any address, you will require supportive documents too.

just came out in the news... within 28 days... wasnt aware b4 😬