On average, listings lease in the $20's per square foot per year. The Camden submarket is going through a decline in rates. In the last 3 months, the median rate fell $3 per sqft per year. That's a 10% decrease in rent.
In the last 90 days, 10 listings have been made available, which means spaces most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. 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 2,250 sqft. Most buildings in this area are around 11 floors. Most buildings in this area were built in 1927 and are Class A.