Most listings are in the $20's per square foot per year. The Edwardsville submarket is experiencing a an increase in rates. In the last 3 months, the median rate rose $26 per sqft per year.
In the last 90 days, 50 listings have come on the market, so you'll want to check back regularly for new listings. About 14% of the listings in the Edwardsville are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,180 sqft. Most properties in this area are close to 2 stories. Most buildings in this area were built in 2000 and are Class A.