Most listings are in the $10's per square foot per year. The Auburn region is seeing a decrease in rates. In the last 3 months, the median rate decreased $4 per sqft per year. That's a 17% decrease in rent.
Compared to the rest of the Greater Sacramento market, the Auburn submarket has lower rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 11 listings have come on the market, which means leases most likley are going fast. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,910 sqft. Most buildings in this area are close to 2 floors. Most buildings in this area were built in 1980 and are Class C.