Most listings are in the $20's per square foot per year. The Dulles Town Center region is going through a a rise in rates. In the last 3 months, the median rate rose $24 per sqft per year.
Compared to the rest of the Washington D.C. market, the Dulles Town Center submarket has less expensive rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 3 listings have been made available, which means new listings most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 367% of the available space in the Dulles Town Center are subleases, so you might be able to find a shorter term or below market rent. 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 6,290 sqft, there are still 0 spaces below 2,000 sqft. Most buildings in this area are close to 2 floors. Most buildings in this market were built in 2001 and are Class A.