Most listings are in the $20's per square foot per year. The New London submarket is going through a a rise in rates. In the last 3 months, the median rate went up $1 per sqft per year. That's a 7% increase in rent.
In the last 90 days, 7 listings have come on the market, which means listings might be leasing quickly. You'll want to be prepared to make an offer immediately. About 14% of the listings in the New London 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,500 sqft. Most buildings in this market are approximately 2 floors. Most buildings in this region were built in 1960 and are Class A.