Most listings are in the $120's per square foot per year. The Norwich submarket is experiencing a decrease in rates. In the last 3 months, the median rate fell $127 per sqft per year. That's a 50% decrease in rent.
In the last 90 days, 11 listings have been posted online, which means new listings are probably leasing quickly. You'll want to be prepared to make an offer immediately. About 127% of the available leases in the Norwich 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 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 2,200 sqft. Most buildings in this area are close to 2 floors. Most buildings in this area were built in 1910 and are Class B.