Most listings are in the $20's per square foot per year. The Essex Junction region is experiencing a an increase in rates. In the last 3 months, the median rate went up $7 per sqft per year. That's a 44% rise in rent.
In the last 90 days, 6 listings have been posted online, which means new listings are probably going fast. You'll want to be prepared to tour spaces as quick as possible. 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 1,740 sqft.