@parados,
It was GSA that decided to count building assets instead of buildings, parados, not Fox. I did not read the report to see if there were any data showing that combining building assets into one building saved on utilities, but frankly I doubt the savings would be significant, if any, knowing how the government typically runs things inefficiently. For example, do you have data showing a reduction in government spending on their office space? I doubt it. Also, I think you are lying about Fox's reporting. They gave you the source, which was the government itself, which invented the term "building asset," not Fox.
If anecdotal evidence means anything or not, but it does to me. I frequent a town that recently moved the Forest Service and BLM into a bigger building, not a smaller one, and I would bet the utilities are higher too.