On average, listings lease in the $10's per square foot per year. The Pleasant Hill submarket is seeing a decrease in rates. In the last 3 months, the median rate fell $14 per sqft per year. That's a 45% decrease in rent.
Compared to the rest of the East Bay market, the Pleasant Hill region has smaller rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 3 listings have been posted online, which means leases 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,320 sqft. Most buildings in this area are approximately 2 floors. Most buildings in this area were built in 1982 and are Class B.