The typical asking rate per listing is in the $10's per square foot per year. The Stanislaus region is experiencing a a boost in rates. In the last 3 months, the median rate went up $2 per sqft per year. That's a 14% increase in rent.
In the last 90 days, 50 listings have come on the market, so you'll want to check back regularly for new listings. About 2% of the listings in the Stanislaus are subleases, so you will probably have to focus your search on direct office leases. 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 2,100 sqft. Most buildings in this area are around 1 stories. Most buildings in this market were built in 1975 and are Class B.