Definitions for "1:5:200"
The expression “1:5:200” originated in a paper by Evans et al, (The Long Term Costs of Owning and Using Buildings) as a guide to illustrate the cost of ownership of new office buildings, where if the capital construction cost is a unit of 1, the facilities management cost will be a factor of 5 and the operating costs a factor of 200, both over a 20 year life.