The typical asking rate per listing is in the $20's per square foot per year. The Andover submarket is going through a an increase in rates. In the last 3 months, the median rate rose $1 per sqft per year. That's a 3% increase in rent.
In the last 90 days, 13 listings have been listed, which means office spaces might be 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 410 sqft. Most buildings in this area are approximately 1 stories. Most buildings in this area were built in 2002 and are Class A.