The typical asking rate per listing is in the $20's per square foot per year. The Rhode Island region is going through a a boost in rates. In the last 3 months, the median rate rose $5 per sqft per year. That's a 24% increase in rent.
In the last 90 days, 87 listings have been posted online, so you'll want to check back regularly for new listings. About 3% of the available leases in the Rhode Island are subleases, so you will probably need to consider the implications of signing a direct lease with the building. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 4,200 sqft, there are still 0 new listings below 2,000 sqft. Most properties in this market are close to 2 floors. Most buildings in this region were built in 1935 and are Class B.