Compared to the rest of the Washington D.C. market, the Falls Church submarket has smaller rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 1 listings have come on the market, which means office spaces are probably leasing quickly. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 500 sqft. Most buildings in this market are approximately 2 stories. Most buildings in this area were built in 1981 and are Class B.