On average, listings lease in the $10's per square foot per year. The Clinton region is experiencing a a rise 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 lower rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 7 listings have been made available, which means leases might be going fast. You'll want to be prepared to make an offer immediately. About 14% of the available space in the Clinton 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 1,840 sqft. Most properties in this area are around 3 floors. Most buildings in this region were built in 1890 and are Class C.