The additional charges which you need to bear are depending on which building your office is located.
If your office is located within the Corporate Office Towers of Mercu 2 or Mercu 3, your monthly rental would have included the monthly service charge and the centralized air-conditioning charges during office hours. The additional monthly utilities that you’ll need to bear would be water bills, your own internet/ phone charges and electricity charges (except the electricity charges for centralized air-conditioners during office hour).
If your office is located within The Pillars or the Strata Office Towers, you’ll need to bear your own internet/ phone charges and all electricity charges (including the electricity charges for air-conditioning during office hour).
In addition to the above, you should also allocate some funds for parking charges as well.