Compared to the rest of the Washington D.C. market, the Bull Run submarket has less expensive rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 37 listings have been made available, which means leases most likley are leasing quickly. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 2,540 sqft, there are still 0 new listings below 2,000 sqft. Most properties in this area are around 2 stories. Most buildings in this market were built in 1988 and are Class B.