The typical asking rate per listing is in the $10's per square foot per year. The Burlington region is going through a an increase in rates. In the last 3 months, the median rate went up $3 per sqft per year. That's a 18% rise in rent.
In the last 90 days, 11 listings have been listed, which means office spaces are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,310 sqft. Most buildings in this area are around 2 stories. Most buildings in this area were built in 1988 and are Class B.