On average, listings lease in the $30's per square foot per year. The Vero Beach region is experiencing a an increase in rates. In the last 3 months, the median rate went up $7 per sqft per year. That's a 26% increase in rent.
In the last 90 days, 18 listings have been listed, which means new availabilities 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,140 sqft. Most buildings in this area are close to 2 stories. Most buildings in this region were built in 1989 and are Class B.