On average, listings lease in the $20's per square foot per year. The Newington region is going through a a rise in rates. In the last 3 months, the median rate increased $20 per sqft per year.
Compared to the rest of the Washington D.C. market, the Newington submarket has smaller rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 7 listings have come on the market, which means office spaces are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 16,190 sqft, there are still 0 new availabilities below 2,000 sqft. Most properties in this area are approximately 1 stories. Most buildings in this area were built in 1982 and are Class B.