Most listings are in the $10's per square foot per year. The Spokane submarket is seeing a an increase in rates. In the last 3 months, the median rate went up $1 per sqft per year. That's a 7% rise in rent.
In the last 90 days, 76 listings have been made available, so you'll want to check back regularly for new listings. About 4% of the office spaces in the Spokane are subleases, so you will probably need to consider the implications of signing a direct lease with the building. There aren't many listings below 2,000 square feet available, 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 floors. Most buildings in this market were built in 1967 and are Class B.