Most listings are in the $10's per square foot per year. The Alexandria region is going through a a rise in rates. In the last 3 months, the median rate went up $3 per sqft per year. That's a 17% rise in rent.
In the last 90 days, 22 listings have been made available, which means spaces might be 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 on the market, so finding a space for a small business might be tough.
Even though the median size is 3,200 sqft, there are still 0 spaces below 2,000 sqft. Most properties in this market are around 1 stories. Most buildings in this area were built in 2003 and are Class A.