On average, listings lease in the $10's per square foot per year. The Washington region is experiencing a a rise in rates. In the last 3 months, the median rate rose $16 per sqft per year.
In the last 90 days, 3 listings have been listed, which means spaces might be leasing quickly. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,250 sqft. Most properties in this market are close to 2 floors. Most buildings in this area were built in 1970 and are Class B.