Most listings are in the $30's per square foot per year. The Danville region is experiencing a decrease in rates. In the last 3 months, the median rate decreased $6 per sqft per year. That's a 12% decrease in rent.
Compared to the rest of the East Bay market, the Danville submarket has smaller rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 5 listings have come on the market, which means new availabilities most likley are going fast. You'll want to be prepared to make an offer immediately. About 80% of the office spaces in the Danville are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet available, 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 properties in this market are approximately 2 stories. Most buildings in this region were built in 1982 and are Class B.