Question: Why did John's house suddenly alter so drastically when Jack's hand was blown off in the past? Did this one event somehow turn John into a better interior decorator?
quinnnmallory
6th Jul 2020
Frequency (2000)
Answer: The house changed because John's life changed, with both his parents alive to nurture and guide him, he became a different person. Different lifestyle and attitudes.
Answer: Because the house is no longer John's. In this universe, his parents still live there.
Brian Katcher
Or he lives there and his wife redecorated.
I always took the scene at the end with Julia and Frank getting in a packed car with an older looking Elvis as them moving and leaving the house for John. And as I said above John's wife must have moved in and decorated.