THE management of Citibank Plaza has predicted the office block will be fully let by the end of the year. More than 120,000 square feet of space was leased in February and March. The building is now more than 60 per cent full. The newly created Hongkong Monetary Authority is to become the second biggest tenant when it sets up in its new 70,000 sq ft office later this year. Chief executive Mr Joseph Yam said: ''The various departments of the Hongkong Monetary Authority are presently situated in three separate locations. ''Bringing them under one roof will provide better communication among the departments and enhance our operational efficiency. ''The new accommodation . . . is chosen because of its proximity to the Government Secretariat, its location at the heart of Central's banking and financial centre and its ability to provide the quantum of space we require. ''Fitting out works have started and we expect the new office premises to be ready around the middle of the year.'' Citibank Plaza management said other financial firms were following the monetary authority's example by moving there. Companies including Hongkong Bank, Credit Lyonnais, Goldman Sachs, Bank of California, Philadelphia National Bank and Citibank have made the move. Rentals now range between $42 and $47 per square foot (psf). That is an average upward trend of $3 psf. Real estate firm Great Eagle, a leasing agent for the building, said demand was continuing to rise. The limited supply of Grade A space in Central and a continuing upward surge in rents were the main reasons.