No, this is not a condition. The question whether or not you possess independent housing will not be assessed in the MVV-application.
After the MVV has been approved, it is required that your partner will live with you in the Netherlands. You will both be required to be registered under the address you will live at. If that is not possible, e.g. too many other people are registered at the same address, you and your partner will have to move somewhere else where it is possible to register yourselves.