On average, listings lease in the $20's per square foot per year. The Rhode Island submarket is experiencing a a rise in rates. In the last 3 months, the median rate went up $2 per sqft per year. That's a 8% rise in rent.
In the last 90 days, 225 listings have been posted online, so you'll want to check back regularly for new listings. About 1% of the available space in the Rhode Island are subleases, so you will probably have to focus your search on direct office leases. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,410 sqft. Most buildings in this area are around 2 stories. Most buildings in this area were built in 1940 and are Class B.