On average, listings lease in the $10's per square foot per year. The Bellevue region is experiencing a an increase in rates. In the last 3 months, the median rate rose $19 per sqft per year. That's a Inf% increase in rent.
In the last 90 days, 5 listings have been listed, which means office spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. 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 9,430 sqft, there are still 0 new listings below 2,000 sqft. Most properties in this region are around 2 floors. Most buildings in this region were built in 1979 and are Class C.