Regarding the areas, the most expensive rents are encountered in downtown Bucharest and in the Northern part of the centre (10-18 euro/sqm/month), followed by the western (8-15 euro/sqm/month) and eastern (7-13 euro/sqm/month) Bucharest. The cheapest rents are in the South (7-12 euro/sqm/month) and the peripheral North (6-11 euro/sqm/month). The rental difference registered between A and C category office buildings situated in the same area goes up to even 70%. According to ESOP report, more than 75% of the middle companies analysed have decided in 2012 to move in office business centres and only 25% have chosen villa offices.