Most listings are in the $30's per square foot per year. The Claremont region is experiencing a an increase in rates. In the last 3 months, the median rate went up $6 per sqft per year. That's a 24% rise in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Claremont submarket has greater rates, and you'll have to negotiate above asking rent to be in this hot submarket.
In the last 90 days, 2 listings have been made available, which means office spaces might be going fast. You'll want to be prepared to make an offer immediately. 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 610 sqft. Most properties in this market are close to 1 floors. Most buildings in this market were built in 2008 and are Class B.