The typical asking rate per listing is in the $10's per square foot per year. The Whittier submarket is experiencing a a rise in rates. In the last 3 months, the median rate went up $18 per sqft per year.
Compared to the rest of the Metropolitan Los Angeles market, the Whittier submarket has less expensive rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 5 listings have been posted online, which means spaces most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 520% of the available leases in the Whittier are subleases, so you might be able to find a shorter term or below market rent. 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 580 sqft. Most properties in this market are close to 2 stories. Most buildings in this area were built in 1974 and are Class C.