Most listings are in the $10's per square foot per year. The Hampshire County region is going through a a rise in rates. In the last 3 months, the median rate went up $19 per sqft per year.
In the last 90 days, 9 listings have been posted online, which means new availabilities are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 89% of the available leases in the Hampshire County 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,650 sqft. Most properties in this area are approximately 1 floors. Most buildings in this region were built in 1940 and are Class Class A.