The typical asking rate per listing is in the $20's per square foot per year. The Fairfield region is going through a a boost in rates. In the last 3 months, the median rate rose $5 per sqft per year. That's a 22% increase in rent.
Compared to the rest of the Bay Area market, the Fairfield region has lower rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 28 listings have come on the market, which means spaces most likley are leasing quickly. 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 9,910 sqft, there are still 0 listings below 2,000 sqft. Most buildings in this market are close to 1 floors. Most buildings in this region were built in 1989 and are Class B.