On average, listings lease in the $70's per square foot per year. The Larkspur region is going through a a boost in rates. In the last 3 months, the median rate increased $6 per sqft per year. That's a 9% rise in rent.
Compared to the rest of the Bay Area market, the Larkspur submarket has more expensive rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 7 listings have been listed, which means new listings are probably going fast. You'll want to be prepared to make an offer immediately. 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 6,210 sqft, there are still 0 new listings below 2,000 sqft. Most properties in this region are around 2 stories. Most buildings in this area were built in 1980 and are Class A.