Most listings are in the $20's per square foot per year. The Herndon region is experiencing a decrease in rates. In the last 3 months, the median rate decreased $4 per sqft per year. That's a 12% decrease in rent.
Compared to the rest of the Washington D.C. market, the Herndon submarket has less expensive rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 7 listings have been made available, which means new availabilities are probably 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 5,910 sqft, there are still 0 listings below 2,000 sqft. Most buildings in this area are approximately 1 floors. Most buildings in this region were built in 1987 and are Class B.