On average, listings lease in the $10's per square foot per year. The Maynard region is going through a an increase in rates. In the last 3 months, the median rate went up $15 per sqft per year.
Compared to the rest of the Greater Boston market, the Maynard submarket has less expensive rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 18 listings have been made available, which means leases are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 6% of the office spaces in the Maynard 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 available, so finding a space for a small business might be tough.
Even though the median size is 2,570 sqft, there are still 0 office spaces below 2,000 sqft. Most buildings in this market are approximately 3 floors. Most buildings in this area were built in 1990 and are Class A.