On average, listings lease in the $40's per square foot per year. The Alexandria region is going through a decline in rates. In the last 3 months, the median rate fell $4 per sqft per year. That's a 9% decline in rent.
Compared to the rest of the Washington D.C. market, the Alexandria region has greater rates, and you'll need to make a great offer to be in this hot submarket.
In the last 90 days, 64 listings have been listed, so you'll want to check back regularly for new listings. About 3% of the available space 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 available, so finding a space for a small business might be tough.
Even though the median size is 2,620 sqft, there are still 0 new listings below 2,000 sqft. Most buildings in this region are around 4 floors. Most buildings in this market were built in 1983 and are Class B.