The typical asking rate per listing is in the $30's per square foot per year. The California region is experiencing a a boost in rates. In the last 3 months, the median rate went up $1 per sqft per year. That's a 2% increase in rent.
In the last 90 days, 9975 listings have been posted online, so you'll want to check back regularly for new listings. About 5% 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 on the market, so finding a space for a small business might be tough.
Even though the median size is 2,530 sqft, there are still 0 new availabilities below 2,000 sqft. Most buildings in this region are close to 2 stories. Most buildings in this market were built in 1960 and are Class B.