In 2004 and 2005, both apartment complexes were located somewhere in
Amsterdam. In 2006, the format of the show has changed to add extra tension to the show. In this new format, there are again four apartments to be built - but five couples to build it. Couples will go through various contests to see who will build which apartment, and who will eventually be asked to leave. The 4th season, running from September 2007, shows a new location as Het Blok has moved to
Haarlem. Supposedly the series has returned to its original format, leaving out the surprises that were introduced in the third season. New series is filmed in Amsterdam (Newtonstraat 99). ==References==