What are Occupancy Costs?

Occupancy costs are defined as the average total cost of leasing prime net usable space. This is defined as modern, well-specified office space of 10,000 sf (929 sm) within a prime Central Business District location. They include rent and outgoings, such as maintenance costs and property tax, if these are normally payable by the occupier but exclude rent-free periods, fitting-out costs and other leasing incentives. Occupancy costs do not take into account the differences in leasing practices among markets.

Source:
http://www.iproperty.com.my/propertymarket/DTZ_GOOC2007.pdf