Most listings are in the $10's per square foot per year. The Clinton region is going through a an increase in rates. In the last 3 months, the median rate went up $15 per sqft per year.
Compared to the rest of the Greater Boston market, the Clinton region has smaller rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 2 listings have been made available, which means new availabilities might be going fast. You'll want to be prepared to tour spaces as quick as possible. 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 1,840 sqft. Most properties in this region are approximately 3 stories. Most buildings in this market were built in 1890 and are Class A.