On average, listings lease in the $20's per square foot per year. The Exeter region is going through a an increase in rates. In the last 3 months, the median rate rose $21 per sqft per year.
Compared to the rest of the Greater Boston market, the Exeter submarket has lower rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 11 listings have been posted online, which means new listings most likley are leasing quickly. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
Even though the median size is 2,800 sqft, there are still 0 office spaces below 2,000 sqft. Most buildings in this market are close to 2 floors. Most buildings in this market were built in 1900 and are Class A.