The typical asking rate per listing is in the $20's per square foot per year. The Whittier submarket is experiencing a a boost in rates. In the last 3 months, the median rate increased $1 per sqft per year. That's a 3% increase in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Whittier region has less expensive rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 60 listings have been made available, so you'll want to check back regularly for new listings. About 3% of the available space in the Whittier are subleases, so you will probably need to sign a longer term lease with the landlord directly. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,480 sqft. Most properties in this area are around 2 floors. Most buildings in this region were built in 1974 and are Class C.