list.toString() is good enough.
The interface List does not define a contract for toString(), but the AbstractCollection base class provides a useful implementation that ArrayList inherits.
Add toString() method to your address class then do
toString()
address
System.out.println(Arrays.toString(houseAddress));
From what I understand you are trying to print an ArrayList of arrays and one way to display that would be
System.out.println(Arrays.deepToString(list.toArray()));