On average, listings lease in the $20's per square foot per year. The Oak Grove region is seeing a a rise in rates. In the last 3 months, the median rate increased $23 per sqft per year.
Compared to the rest of the Washington D.C. market, the Oak Grove submarket has smaller rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 1 listings have been posted online, which means new listings 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 950 sqft. Most buildings in this market are approximately 2 floors. Most buildings in this area were built in 1989 and are Class B.