On average, listings lease in the $20's per square foot per year. The Springfield submarket is seeing a decline in rates. In the last 3 months, the median rate decreased $3 per sqft per year. That's a 14% decrease in rent.
In the last 90 days, 38 listings have been posted online, which means new listings are probably going fast. 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.
The standard measurement for office space in this area is around 1,500 sqft. Most buildings in this area are approximately 2 stories. Most buildings in this area were built in 1900 and are Class B.