On average, listings lease in the $10's per square foot per year. The Auburn submarket is going through a a boost in rates. In the last 3 months, the median rate went up $20 per sqft per year.
In the last 90 days, 5 listings have been listed, which means spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 100% of the office spaces in the Auburn are subleases, so you might be able to snag a great spot on a short term. 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 1,990 sqft. Most properties in this market are approximately 2 floors. Most buildings in this region were built in 1920 and are Class B.