The typical asking rate per listing is in the $30's per square foot per year. The Dublin submarket is seeing a a boost in rates. In the last 3 months, the median rate went up $2 per sqft per year. That's a 8% increase in rent.
Compared to the rest of the East Bay market, the Dublin submarket has smaller rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 10 listings have been posted online, which means leases 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.
The standard measurement for office space in this area is around 1,680 sqft. Most properties in this area are close to 2 floors. Most buildings in this market were built in 1986 and are Class B.