Most listings are in the $10's per square foot per year. The Spokane Valley submarket is experiencing a decline in rates. In the last 3 months, the median rate fell $1 per sqft per year. That's a 6% decrease in rent.
In the last 90 days, 50 listings have been listed, so you'll want to check back regularly for new listings. About 2% of the available space in the Spokane Valley are subleases, so you will probably have to consider a longer term lease. 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 1,760 sqft. Most buildings in this region are approximately 2 stories. Most buildings in this area were built in 1980 and are Class B.