Where is my home???

When I was a teenager my mother and father bought a house. The former owners still came to visit their old neighbours next to our house. So one Saturday night/morning my parents woke up as they heard someone trying to unlock our main door. They peaked out from a window and saw that it was the former house owner who was very drunk and tried with a pair of keys to open our door. She talked to him from the inside, without opening the door, telling him that he did not live here anymore. After a while he disappeared.