The typical asking rate per listing is in the $30's per square foot per year. The Danville submarket is seeing a decline in rates. In the last 3 months, the median rate decreased $6 per sqft per year. That's a 12% decline in rent.
Compared to the rest of the East Bay market, the Danville region has less expensive rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 5 listings have been posted online, which means spaces most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 80% of the office spaces in the Danville are subleases, so you might be able to snag a great spot on a short term. 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 1,140 sqft. Most buildings in this area are around 2 stories. Most buildings in this market were built in 1982 and are Class B.