The typical asking rate per listing is in the $10's per square foot per year. The Auburn region is going through a an increase in rates. In the last 3 months, the median rate increased $20 per sqft per year.
Compared to the rest of the Seattle Metropolitan Area market, the Auburn region has smaller rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 8 listings have been listed, which means spaces might be going fast. You'll want to be prepared to make an offer immediately. About 200% of the available space in the Auburn 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 on the market, so finding a space for a small business might be tough.
Even though the median size is 4,200 sqft, there are still 0 listings below 2,000 sqft. Most properties in this market are around 2 floors. Most buildings in this region were built in 1989 and are Class B.