Most listings are in the $20's per square foot per year. The Bellevue region is seeing a an increase in rates. In the last 3 months, the median rate increased $22 per sqft per year. That's a Inf% rise in rent.
In the last 90 days, 1 listings have been listed, which means new listings most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 100% of the office spaces in the Bellevue are subleases, so you might be able to sign a shorter term by taking over a previous lease. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 28,410 sqft, there are still 0 new availabilities below 2,000 sqft. Most buildings in this area are close to 3 floors. Most buildings in this area were built in 2008 and are Class B.