Compared to the rest of the Metropolitan Los Angeles market, the Chino Hills 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, 1 listings have been posted online, which means office spaces are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 400% of the office spaces in the Chino Hills are subleases, so you might be able to sign a shorter term by taking over a previous lease. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,060 sqft. Most buildings in this area are around 2 stories. Most buildings in this area were built in 2007 and are Class B.