On average, listings lease in the $20's per square foot per year. The Oak Grove region is seeing a an increase in rates. In the last 3 months, the median rate went up $23 per sqft per year.
Compared to the rest of the Washington D.C. market, the Oak Grove region has lower rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 1 listings have been listed, which means new listings most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 400% of the listings in the Oak Grove are subleases, so you might be able to snag a great spot on a short term. 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 950 sqft. Most buildings in this area are approximately 2 stories. Most buildings in this market were built in 1989 and are Class B.