On average, listings lease in the $30's per square foot per year. The San Anselmo submarket is seeing a an increase in rates. In the last 3 months, the median rate went up $37 per sqft per year. That's a Inf% rise in rent.
Compared to the rest of the Bay Area market, the San Anselmo region has smaller rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 2 listings have been listed, which means new listings are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 50% of the available leases in the San Anselmo 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.
Even though the median size is 3,300 sqft, there are still 0 new availabilities below 2,000 sqft. Most buildings in this region were built in 2004 and are Class B.