The list of world’s fastest growing office rental markets in the year to May now has New Delhi as the latest addition. Others are Abu Dhabi in the United Arab Emirates leading the chart followed by Sofia in Bulgaria, says the data showcased by CB Richard Ellis.

Abu Dhabi witnessed to be the world’s most expensive commercial location, where rents doubled during the concerned period. London and Tokyo, however, still secure their positions as the world’s most expensive office locations, headed London’s West End where occupiers need to pay an average of $241 per square foot for a good commercial space.

Also, the London Districts remain on top of the European rental league. Commercial Property Rentals in London’s West End were turned out to be double of the value paid in Moscow, Paris and Dublin - Europe’s most expensive office markets outside London, adds the data.

Sofia was termed as the fastest growing market, with a 63% appreciation in rentals, as economic expansion in the European Union newcomer attracts several multinational companies and offers a conducive environment for the growth of domestic business.