In the last 90 days, 22 listings have been made available, which means new listings most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 5% of the available leases in the Alexandria are subleases, so you will probably need to consider the implications of signing a direct lease with the building. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 370 sqft. Most buildings in this market are approximately 1 floors. Most buildings in this area were built in 2003 and are Class A.