Most listings are in the $60's per square foot per year. The Dupont Circle region is going through a decline in rates. In the last 3 months, the median rate decreased $11 per sqft per year. That's a 14% decline in rent.
In the last 90 days, 23 listings have been made available, which means office spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 9% of the available leases in the Dupont Circle are subleases, so you will probably need to sign a longer term lease with the landlord directly. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 3,580 sqft, there are still 0 new listings below 2,000 sqft. Most buildings in this area are approximately 11 floors. Most buildings in this market were built in 1970 and are Class A.
This region is fairly equally mixed residential and commercial. Utilities is the dominant industry in this region. Commute by motorcycle is the most popular way to get to work amongst Dupont Circle folk. Commuting close to an hour a day is the norm for those who opt to reside in this part of town.