Compared to the rest of the Washington D.C. market, the McLean region has higher rates, and you'll need to pay a premium to be in this hot submarket.
In the last 90 days, 2 listings have been posted online, 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 1,850 sqft. Most buildings in this market are close to 5 stories. Most buildings in this region were built in 1980 and are Class B.