The typical asking rate per listing is in the $10's per square foot per year. The Chittenden County region is going through a a boost in rates. In the last 3 months, the median rate increased $2 per sqft per year. That's a 11% rise in rent.
In the last 90 days, 107 listings have been posted online, so you'll want to check back regularly for new listings. About 1% of the available leases in the Chittenden County are subleases, so you will probably have to focus your search on direct office leases. 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 2,450 sqft. Most buildings in this market are close to 2 floors. Most buildings in this area were built in 1975 and are Class A.