Most listings are in the $10's per square foot per year. The Williamstown submarket is going through a a boost in rates. In the last 3 months, the median rate increased $20 per sqft per year. That's a Inf% increase in rent.
In the last 90 days, 4 listings have been posted online, which means leases are probably going fast. You'll want to be prepared to make an offer immediately. 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 5,500 sqft, there are still 0 spaces below 2,000 sqft. Most buildings in this region are around 1 floors. Most buildings in this area were built in 1974 and are Class C.