On average, listings lease in the $20's per square foot per year. The Wethersfield region is going through a an increase in rates. In the last 3 months, the median rate went up $26 per sqft per year.
In the last 90 days, 7 listings have been made available, which means office spaces are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. 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 1,570 sqft. Most properties in this area are around 2 floors. Most buildings in this area were built in 1974 and are Class B.