I am pretty sure it has been added later.

It is clearly shown that the balcony is new and the house is too old.
I remember when I was a kid and we use to go to my aunt home, The home old but with a beautiful balcony and we use to stay on the balcony to see the tree which was right in front of the balcony. The tree was too old and has too many nests, It was really enjoyable to listen to the voices of different birds.