Most listings are in the $30's per square foot per year. The Falls Church County submarket is seeing a decline in rates. In the last 3 months, the median rate decreased $6 per sqft per year. That's a 17% decline in rent.
In the last 90 days, 9 listings have come on the market, which means leases most likley are going fast. 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 2,500 sqft. Most properties in this area are approximately 5 floors. Most buildings in this region were built in 1980 and are Class B.