The typical asking rate per listing is in the $40's per square foot per year. The Groton submarket is experiencing a a boost in rates. In the last 3 months, the median rate went up $42 per sqft per year.
In the last 90 days, 4 listings have been posted online, which means office spaces are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 100% of the listings in the Groton 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 150 sqft. Most buildings in this area are approximately 2 floors. Most buildings in this area were built in 1983.