Compared to the rest of the Washington D.C. market, the Fairfax submarket has lower rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 31 listings have been posted online, which means new availabilities might be going fast. You'll want to be prepared to make an offer immediately. About 135% of the office spaces in the Fairfax are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 1,370 sqft. Most properties in this area are approximately 3 stories. Most buildings in this area were built in 1985 and are Class B.