The typical asking rate per listing is in the $10's per square foot per year. The Springfield submarket is going through a an increase in rates. In the last 3 months, the median rate increased $1 per sqft per year. That's a 7% rise in rent.
In the last 90 days, 139 listings have been made available, so you'll want to check back regularly for new listings. About 2% of the listings in the Springfield are subleases, so you will probably need to consider the implications of signing a direct lease with the building. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,830 sqft. Most properties in this area are close to 1 stories. Most buildings in this region were built in 1994 and are Class A.