On average, listings lease in the $20's per square foot per year. The Cranston submarket is experiencing a a boost in rates. In the last 3 months, the median rate rose $4 per sqft per year. That's a 20% increase in rent.
Compared to the rest of the Greater Boston market, the Cranston submarket has less expensive rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 4 listings have been listed, which means listings most likley are going fast. You'll want to be prepared to make an offer immediately. 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 2,300 sqft. Most properties in this area are approximately 2 floors. Most buildings in this area were built in 1951 and are Class Class A.