Most listings are in the $30's per square foot per year. The Concord submarket is going through a a boost in rates. In the last 3 months, the median rate went up $37 per sqft per year.
Compared to the rest of the Greater Boston market, the Concord region has greater rates, and you'll need to pay a premium to be in this hot submarket.
In the last 90 days, 121 listings have been made available, so you'll want to check back regularly for new listings. About 26% of the available leases in the Concord 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 400 sqft. Most buildings in this market are approximately 2 stories. Most buildings in this area were built in 1920 and are Class Class B.