The typical asking rate per listing is in the $20's per square foot per year. The Marlow Heights submarket is going through a decline in rates. In the last 3 months, the median rate decreased $2 per sqft per year. That's a 7% decline in rent.
Compared to the rest of the Washington D.C. market, the Marlow Heights submarket has smaller rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 4 listings have been listed, which means listings are probably going fast. You'll want to be prepared to tour spaces as quick as possible. 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 470 sqft. Most properties in this region are around 2 stories. Most buildings in this market were built in 1971 and are Class B.