In the last 90 days, 1 listings have been made available, which means new listings are probably going fast. You'll want to be prepared to make an offer immediately. About 100% of the available leases in the Oakland are subleases, so you might be able to snag a great spot on a short term. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,110 sqft. Most properties in this market are close to 2 floors. Most buildings in this area were built in 1989 and are Class B.