Once the exams were over, the scores were released. Taking advantage of the fact that the effects of their Aging Potions had not yet worn off, Lord Voldemort and Severus slipped out together in secret. They found a visa office and used a Confundus Charm to transfer Harry Potter's legal guardianship to Sirius, and then, under the guise of Sirius buying a house for Harry, they purchased Number 4 Privet Drive.
As for whether this would cause a stir in the Wizarding World—who knew? Everyone was already far too overwhelmed with their own problems.
Lucius summoned a few house-elves to wait on Lord Voldemort. The Dark Lord kicked a bunch of them away to clean the house, then dragged a stool over to the stove and started cooking himself.
Chapter 109