Most listings are in the $70's per square foot per year. The Larkspur submarket is seeing a decrease in rates. In the last 3 months, the median rate decreased $4 per sqft per year. That's a 5% decline in rent.
Compared to the rest of the Bay Area market, the Larkspur region has higher rates, and you'll need to pay a premium to be in this hot submarket.
In the last 90 days, 9 listings have been made available, which means new availabilities most likley are going fast. You'll want to be prepared to make an offer immediately. About 22% of the listings in the Larkspur 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,000 sqft. Most buildings in this region are approximately 2 stories. Most buildings in this area were built in 1981 and are Class B.