Chicago is a close second to Seattle and Portland for the metro with the most data center construction activity. Construction costs associated with a new data center are high and the investment for IT infrastructure can be two to three times the amount to build. Demand for data center space in Chicago has been particularly high from west coast technology companies and banking and financial services. This increased supply of square footage has been mostly located in the suburbs while the downtown market has seen a significant shortage of turn-key colocation space.