The typical asking rate per listing is in the $30's per square foot per year. The Montpelier region is seeing a a rise in rates. In the last 3 months, the median rate increased $16 per sqft per year. That's a 84% rise in rent.
In the last 90 days, 19 listings have been posted online, which means leases 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 80 sqft. Most properties in this market are close to 3 stories. Most buildings in this region were built in 1920 and are Class B.