In the last 90 days, 11142 listings have been listed, so you'll want to check back regularly for new listings. About 6% of the available space in the California 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 2,320 sqft. Most buildings in this market are close to 2 floors. Most buildings in this area were built in 1957 and are Class B.