Most listings are in the $30's per square foot per year. The Fairview Heights submarket is experiencing a a boost in rates. In the last 3 months, the median rate rose $17 per sqft per year. That's a 114% rise in rent.
In the last 90 days, 6 listings have been made available, which means spaces most likley are leasing quickly. 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 2,200 sqft. Most properties in this area are close to 1 floors. Most buildings in this market were built in 1995 and are Class B.