Located at the top of the house, on the fifth landing of the narrow staircase, just below the attic with its ghoul, the walls and sloping ceiling of Ron's room are covered with orange Chudley Cannons posters. His Cannons bedspread is a bit threadbare; it's emblazoned with the Chudley Cannons logo: two black C's and a speeding cannonball. There's a tank of frog spawn, a pack of self-shuffling playing cards, and other wonders here. The room has a sign on the door reading "Ronald's Room."

Located on the second floor, his room has a window that opens out onto the garden (GF5). He spends a lot of time in his room. While he was at Hogwarts he spent his time writing letters to Penelope Clearwater, his girlfriend. After he left school, he worked on reports for his job at the Ministry of Magic in his room. Percy has now left home, of course, so his room is apparently vacant.

This room is on the second floor (HBP5). The twins do magical experiments in their room. Mysterious explosions and noises emanate from it. They've invented all sorts of interesting (and somewhat dangerous) magical items. When cleaning their room, their mother discovered a stack of order forms for them to sell their fake wands and magical candy to kids at school. Molly burned the forms. Now that the twins sleep in the flat above their shop, the room serves as something of a store room (HBP5).

On the third landing (CS3). When Hermione stays over, she sleeps in Ginny's room (GF5).