The typical asking rate per listing is in the $10's per square foot per year. The Chittenden County region is going through a decrease in rates. In the last 3 months, the median rate fell $3 per sqft per year. That's a 13% decrease in rent.
In the last 90 days, 68 listings have been listed, so you'll want to check back regularly for new listings. About 1% of the listings in the Chittenden County are subleases, so you will probably need to sign a longer term lease with the landlord directly. 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 1,980 sqft. Most properties in this market are close to 2 stories. Most buildings in this area were built in 1870 and are Class A.