Compared to the rest of the Washington D.C. market, the Kensington submarket has less expensive rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 1 listings have been made available, which means office spaces most likley are going fast. You'll want to be prepared to make an offer immediately. 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 1,620 sqft. Most buildings in this area are close to 2 floors. Most buildings in this market were built in 1963 and are Class B.