Most listings are in the $10's per square foot per year. The Cascades region is experiencing a decline in rates. In the last 3 months, the median rate decreased $8 per sqft per year. That's a 33% decline in rent.
Compared to the rest of the Washington D.C. market, the Cascades submarket has lower rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 3 listings have been listed, which means leases might be leasing quickly. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,000 sqft. Most properties in this market are approximately 3 stories. Most buildings in this market were built in 2002 and are Class B.