The typical asking rate per listing is in the $20's per square foot per year. The Greater Boston submarket is experiencing a decline in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 5% decline in rent.
In the last 90 days, 3593 listings have come on the market, so you'll want to check back regularly for new listings. About 2% of the office spaces in the Greater Boston 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 1,950 sqft. Most buildings in this area are close to 2 floors. Most buildings in this market were built in 1969 and are Class A.