On average, listings lease in the $20's per square foot per year. The Falls Church region is going through a a boost in rates. In the last 3 months, the median rate rose $26 per sqft per year.
Compared to the rest of the Washington D.C. market, the Falls Church region has smaller rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 1 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. About 800% of the available space in the Falls Church are subleases, so you might be able to snag a great spot on a short term. 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 800 sqft. Most properties in this market are approximately 2 stories. Most buildings in this region were built in 1980 and are Class B.