Compared to the rest of the Washington D.C. market, the Warrenton region has less expensive rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 3 listings have come on the market, 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 on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 960 sqft. Most properties in this region are close to 3 floors. Most buildings in this area were built in 1991 and are Class A.