Most listings are in the $20's per square foot per year. The Kennewick submarket is seeing a a rise in rates. In the last 3 months, the median rate rose $22 per sqft per year.
In the last 90 days, 11 listings have come on the market, which means office spaces are probably leasing quickly. You'll want to be prepared to make an offer immediately. About 545% of the listings in the Kennewick 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.
The standard measurement for office space in this area is around 1,400 sqft. Most buildings in this region are approximately 2 stories. Most buildings in this market were built in 1998 and are Class B.