Most listings are in the $30's per square foot per year. The San Marino region is experiencing a a boost in rates. In the last 3 months, the median rate rose $36 per sqft per year.
Compared to the rest of the Metropolitan Los Angeles market, the San Marino submarket has higher rates, and you'll have to negotiate above asking rent to be in this hot submarket.
In the last 90 days, 1 listings have come on the market, which means new availabilities might be going fast. You'll want to be prepared to make an offer immediately. About 200% of the available space in the San Marino 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 620 sqft. Most buildings in this market are around 2 stories. Most buildings in this area were built in 1951 and are Class B.