Most listings are in the $40's per square foot per year. The East Bay submarket is seeing a a boost in rates. In the last 3 months, the median rate went up $8 per sqft per year. That's a 21% rise in rent.
Compared to the rest of the East Bay market, the East Bay submarket has less expensive rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 721 listings have been listed, so you'll want to check back regularly for new listings. About 6% of the available space in the East Bay are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 2,330 sqft. Most properties in this market are close to 2 floors. Most buildings in this market were built in 1983 and are Class B.