The typical asking rate per listing is in the $30's per square foot per year. The McNair region is going through a a rise in rates. In the last 3 months, the median rate went up $36 per sqft per year.
Compared to the rest of the Washington D.C. market, the McNair submarket has greater rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 2 listings have come on the market, which means office spaces are probably going fast. You'll want to be prepared to make an offer immediately. About 850% of the listings in the McNair are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 27,920 sqft, there are still 0 listings below 2,000 sqft. Most properties in this market are close to 5 stories. Most buildings in this area were built in 2000 and are Class A.