Most listings are in the $10's per square foot per year. The Alexandria submarket is going through a decline in rates. In the last 3 months, the median rate fell $2 per sqft per year. That's a 9% decline in rent.
In the last 90 days, 6 listings have been made available, which means new availabilities 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 posted, so finding a space for a small business might be tough.
Even though the median size is 2,800 sqft, there are still 0 listings below 2,000 sqft. Most properties in this area are around 1 stories. Most buildings in this market were built in 0 and are Class B.