[Jesus of nazareth]

Don't pay any attention to Investy dominfe, he's come out with all sorts of rubbish in the past on this forum and others where he goes by the names of dogbox and thorr. There are many developers who will make modifications as you say. The only problem I see in trying to do it yourself after completion is that you may not be allowed. Each block on Paradise accommodates four apartments, any change you want to make may be seen as compromising the structure of the shared building, therefore you might not be allowed to make alterations.