The typical asking rate per listing is in the $20's per square foot per year. The Litchfield County region is going through a a boost in rates. In the last 3 months, the median rate rose $0 per sqft per year. That's a 1% increase in rent.
In the last 90 days, 26 listings have been posted online, which means new availabilities are probably leasing quickly. You'll want to be prepared to make an offer immediately. 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 1,310 sqft. Most buildings in this area are approximately 2 floors. Most buildings in this area were built in 1956 and are Class A.