The typical asking rate per listing is in the $20's per square foot per year. The Woodway region is going through a an increase in rates. In the last 3 months, the median rate went up $8 per sqft per year. That's a 60% increase in rent.
In the last 90 days, 3 listings have been made available, which means leases are probably 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 180 sqft. Most properties in this market are close to 3 floors.