Most listings are in the $10's per square foot per year. The Alabaster region is going through a an increase in rates. In the last 3 months, the median rate went up $19 per sqft per year. That's a Inf% rise in rent.
In the last 90 days, 10 listings have been listed, which means office spaces 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 880 sqft. Most properties in this region are approximately 2 floors. Most buildings in this market were built in 2005 and are Class B.