Strong user demand has driven construction activity, but it might also start to drive land and construction costs up.

Many investors work extra hard to find properties that provide higher yields, and Chicago-area properties tend to land at the top of their wish lists.

A source tells us the 321,000-square foot building is trading at $140 million or $436 per square foot.

The property features an attractive four spaces per 1,000 square feet parking ratio, a remodeled conference and training facility, a modernized deli, and a state-of-the-art fitness center.