On average, listings lease in the $30's per square foot per year. The Reston submarket is going through a a rise in rates. In the last 3 months, the median rate went up $33 per sqft per year.
Compared to the rest of the Washington D.C. market, the Reston region has greater rates, and you'll need to make a great offer to be in this hot submarket.
In the last 90 days, 33 listings have been made available, which means office spaces are probably going fast. You'll want to be prepared to make an offer immediately. About 136% of the available leases in the Reston are subleases, so you might be able to snag a great spot on a short term. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
Even though the median size is 2,930 sqft, there are still 0 office spaces below 2,000 sqft. Most properties in this region are around 5 stories. Most buildings in this market were built in 1987 and are Class A.