On average, listings lease in the $20's per square foot per year. The Benicia region is going through a decline in rates. In the last 3 months, the median rate decreased $3 per sqft per year. That's a 10% decline in rent.
Compared to the rest of the Bay Area market, the Benicia region has less expensive rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 3 listings have come on the market, which means new availabilities are probably 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 1,070 sqft. Most buildings in this region are approximately 1 floors. Most buildings in this area were built in 1990 and are Class B.