The typical asking rate per listing is in the $30's per square foot per year. The Reston submarket is going through a decrease in rates. In the last 3 months, the median rate fell $4 per sqft per year. That's a 11% decline in rent.
Compared to the rest of the Washington D.C. market, the Reston submarket has more expensive rates, and you'll need to make a great offer to be in this hot region.
In the last 90 days, 68 listings have been made available, so you'll want to check back regularly for new listings. About 4% of the office spaces in the Reston 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 posted, so finding a space for a small business might be tough.
Even though the median size is 5,170 sqft, there are still 0 listings below 2,000 sqft. Most buildings in this market are close to 5 stories. Most buildings in this region were built in 1987 and are Class A.