The typical asking rate per listing is in the $10's per square foot per year. The Damascus region is seeing a a boost in rates. In the last 3 months, the median rate increased $18 per sqft per year.
Compared to the rest of the Washington D.C. market, the Damascus region has less expensive rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 3 listings have been posted online, which means office spaces might be leasing quickly. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,500 sqft. Most buildings in this market were built in 1980 and are Class A.