The typical asking rate per listing is in the $10's per square foot per year. The Bristol submarket is seeing a an increase in rates. In the last 3 months, the median rate went up $16 per sqft per year.
In the last 90 days, 4 listings have been listed, which means office spaces might be leasing quickly. You'll want to be prepared to make an offer immediately. 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 870 sqft. Most properties in this market are close to 2 stories. Most buildings in this area were built in 1958.