In the last 90 days, 10374 listings have come on the market, so you'll want to check back regularly for new listings. About 6% of the listings in the California 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 2,210 sqft. Most properties in this market are close to 2 floors. Most buildings in this area were built in 1957 and are Class B.