Most listings are in the $20's per square foot per year. The Artesia region is going through a decrease in rates. In the last 3 months, the median rate decreased $12 per sqft per year. That's a 36% decline in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Artesia submarket has less expensive rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 3 listings have been made available, which means listings most likley are leasing quickly. 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 1,180 sqft. Most buildings in this market are approximately 4 floors. Most buildings in this market were built in 1986 and are Class B.