Most listings are in the $30's per square foot per year. The Washington D.C. region is experiencing a decline in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 2% decrease in rent.
In the last 90 days, 1890 listings have been made available, so you'll want to check back regularly for new listings. About 3% of the office spaces in the Washington D.C. are subleases, so you will probably have to consider a longer term lease. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
Even though the median size is 3,300 sqft, there are still 0 spaces below 2,000 sqft. Most properties in this market are approximately 4 floors. Most buildings in this area were built in 1986 and are Class A.