Most listings are in the $30's per square foot per year. The Benicia region is going through a an increase in rates. In the last 3 months, the median rate rose $10 per sqft per year. That's a 50% increase in rent.
Compared to the rest of the Bay Area market, the Benicia region has smaller rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 3 listings have been posted online, which means office spaces most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 5,040 sqft, there are still 0 listings below 2,000 sqft. Most properties in this area are around 1 stories. Most buildings in this area were built in 1990 and are Class B.