Harry's home was burned down in Changes. Since then the only places he's been able to stay were a boat, his grave, and the Queen of Air and Darkness' place at Arctis Tor. Shortly after coming back to Chicago he was attacked by the Fae. Molly shows up and rescues him. She takes him back to her rather impressive basketball court sized apartment, bandages him up, and gives him the guest room for as long as he wants.
(Regarding finding a place)
Harry:“Did you think I couldn’t take care of it myself?”
Molly:“Of course not, but...you know. I guess I think that maybe you shouldn’t have to? You were there when I needed you. I figured it was my turn now.”
- The kicker? The guest room is designed and decorated just like his old place.
I looked around. It wasn’t home, but . . . it was in the right zip code. And it was maybe the single sweetest thing anyone had ever done for me.