article_snippet.sent: Scroll down for video .
article_snippet.sent: Viewers are still catching up, with current episodes focusing on kitchens - the only major room left to make-over.
article_snippet.sent: The internal stairs and terraces are all that is then left to complete.
article_snippet.sent: If previous years are anything to go by, up to 40,000 Block fans are expected to line up to be the first to walk through the four reality show homes.