The typical asking rate per listing is in the $20's per square foot per year. The Lansdowne region is seeing a a boost in rates. In the last 3 months, the median rate went up $26 per sqft per year.
Compared to the rest of the Washington D.C. market, the Lansdowne submarket has lower rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 1 listings have been made available, which means new listings most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 100% of the listings in the Lansdowne 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,990 sqft. Most buildings in this region were built in 2007 and are Class A.