Most listings are in the $10's per square foot per year. The San Joaquin region is seeing a a rise in rates. In the last 3 months, the median rate increased $2 per sqft per year. That's a 10% increase in rent.
In the last 90 days, 85 listings have come on the market, so you'll want to check back regularly for new listings. About 1% of the available space in the San Joaquin are subleases, so you will probably need to consider the implications of signing a direct lease with the building. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,790 sqft. Most buildings in this area are around 0 stories. Most buildings in this area were built in 1978 and are Class A.