Most listings are in the $0's per square foot per year. The Limestone County region is experiencing a decrease in rates. In the last 3 months, the median rate fell $14 per sqft per year. That's a 100% decline in rent.
In the last 90 days, 1 listings have come on the market, which means spaces 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around sqft.