On average, listings lease in the $20's per square foot per year. The Pittsfield submarket is seeing a an increase in rates. In the last 3 months, the median rate went up $24 per sqft per year.
In the last 90 days, 12 listings have been posted online, which means new listings are probably going fast. You'll want to be prepared to make an offer immediately. About 75% of the available space in the Pittsfield are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 680 sqft. Most properties in this area are close to 3 stories. Most buildings in this area were built in 1916 and are Class A.