On average, listings lease in the $20's per square foot per year. The Springfield region is going through a a rise in rates. In the last 3 months, the median rate went up $3 per sqft per year. That's a 15% increase in rent.
In the last 90 days, 22 listings have been posted online, which means new listings most likley are leasing quickly. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 2,530 sqft, there are still 0 listings below 2,000 sqft. Most properties in this area are approximately 2 floors. Most buildings in this market were built in 1988 and are Class A.