On average, listings lease in the $20's per square foot per year. The River West region is going through a decline in rates. In the last 3 months, the median rate fell $2 per sqft per year. That's a 10% decrease in rent.
In the last 90 days, 10 listings have been made available, which means office spaces most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,930 sqft. Most buildings in this region are approximately 2 floors. Most buildings in this region were built in 1989 and are Class A.
Not much of the real estate is used for commercial space, so it might be hard to find office space. Utilities is the dominant industry in this region. Most of the residents of River West work from home. Commuting around 30 minutes a day is the norm for those who opt to reside in this part of town.