Most listings are in the $30's per square foot per year. The Pleasanton submarket is going through a decrease in rates. In the last 3 months, the median rate decreased $6 per sqft per year. That's a 13% decrease in rent.
Compared to the rest of the East Bay market, the Pleasanton region has higher rates, and you'll need to pay a premium to be in this hot region.
In the last 90 days, 33 listings have been posted online, which means listings most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 3% of the office spaces in the Pleasanton are subleases, so you will probably have to consider a longer term lease. 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 2,440 sqft. Most properties in this market are approximately 2 stories. Most buildings in this region were built in 1986 and are Class A.