On average, listings lease in the $20's per square foot per year. The New London region is seeing a a boost in rates. In the last 3 months, the median rate increased $2 per sqft per year. That's a 12% increase in rent.
In the last 90 days, 9 listings have been posted online, which means new availabilities most likley are going fast. You'll want to be prepared to make an offer immediately. About 11% of the office spaces in the New London 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 1,800 sqft. Most buildings in this market are close to 2 floors. Most buildings in this area were built in 1986 and are Class A.