Most listings are in the $10's per square foot per year. The Springfield submarket is going through a a boost in rates. In the last 3 months, the median rate rose $20 per sqft per year.
In the last 90 days, 139 listings have come on the market, so you'll want to check back regularly for new listings. About 63% of the office spaces in the Springfield 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 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 1,630 sqft. Most buildings in this market are around 1 stories. Most buildings in this region were built in 1994 and are Class A.