The typical asking rate per listing is in the $20's per square foot per year. The Greater Boston submarket is going through a an increase in rates. In the last 3 months, the median rate rose $24 per sqft per year.
In the last 90 days, 3593 listings have been listed, so you'll want to check back regularly for new listings. About 40% of the available leases in the Greater Boston are subleases, so you might be able to snag a great spot on a short term. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
Even though the median size is 3,130 sqft, there are still 0 new availabilities below 2,000 sqft. Most buildings in this region are approximately 2 floors. Most buildings in this area were built in 1970 and are Class A.