On average, listings lease in the $10's per square foot per year. The Sebastian region is seeing a decline in rates. In the last 3 months, the median rate decreased $9 per sqft per year. That's a 37% decline in rent.
In the last 90 days, 3 listings have been posted online, which means leases most likley are leasing quickly. 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.
The standard measurement for office space in this area is around 2,000 sqft. Most buildings in this area are approximately 2 stories. Most buildings in this market were built in 1973 and are Class B.