new delhi delhis central business district connaught place has been ranked fifth most expensive prime office market in the world with a rent of around 157 per sq ft per annum property advisory firm cbre said in a report the top position went to london west end with an overall occupancy costs of 267 per sq ft per annum while asia continued to dominate the worlds most expensive office locations accounting for four of the top five markets mumbais alternative business district of bandrakurla complex bkc stands at the 15th position while the citys cbd of nariman point is at the 30th position in the top 50 rankings for global prime office properties in cbre researchs semiannual global prime office occupancy costs survey although delhis connaught place moved up one spot in the rankings due to the rupee depreciation however occupancy costs in this market remained largely stable due to a positive market sentiment mumbais bkc and nariman point showed a nominal decrease of less than 1 percent over a 12month period while yoy office occupancy costs rose by about 22 percent in the bangalore cbd broadly in line with global inflationsaid anshuman magazine managing director of cbre south asia