On average, listings lease in the $20's per square foot per year. The Washington region is experiencing a a boost in rates. In the last 3 months, the median rate went up $1 per sqft per year. That's a 4% increase in rent.
In the last 90 days, 905 listings have come on the market, so you'll want to check back regularly for new listings. About 7% of the office spaces in the Washington are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 3,000 sqft, there are still 0 spaces below 2,000 sqft. Most buildings in this region are close to 2 floors. Most buildings in this area were built in 1984 and are Class A.