The typical asking rate per listing is in the $20's per square foot per year. The Germantown region is going through a decline in rates. In the last 3 months, the median rate fell $4 per sqft per year. That's a 13% decline in rent.
Compared to the rest of the Washington D.C. market, the Germantown submarket has less expensive rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 12 listings have been made available, which means leases most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 8% of the available space in the Germantown are subleases, so you will probably have to focus your search on direct office leases. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 3,270 sqft, there are still 0 listings below 2,000 sqft. Most buildings in this region are around 1 floors. Most buildings in this area were built in 2002 and are Class B.