If a player does not wish to buy any markers during a turn he simply dials an area on which there is already Park. These are simultaneously revealed and each player immediately pays for the number of markers he hass indicated he wishes to purchase whether or not he is subsequently successful in placing them on the area in question. Starting with the Burgermeister each player places one marker on the board and this continues until either all have placed or are unable to do so. The amount of the payment depends upon whether the development is regarded as being 'Efficient'. This efficiency is determined by the four adjacent plaques that share a common side.
Housing is efficient if there is no Industry adjacent.
Industry needs at least one Commerce to be efficient and Commerce needs at least 2 adjacent Housing plaques to be an efficient development. Parks have no meaning for this. In addition, players receive Bonuses. If all four markers on a site belong to just one player he receives a 10DM or 5DM bonus according to whether the area is Efficiently or Inefficiently developed. Should two players' markers be present on a site the bonus is 2 and 1.