Most listings are in the $10's per square foot per year. The Hawthorne submarket is going through a decline in rates. In the last 3 months, the median rate decreased $4 per sqft per year. That's a 17% decline in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Hawthorne region has smaller rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 5 listings have been made available, which means listings might be leasing quickly. You'll want to be prepared to make an offer immediately. 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 1,150 sqft. Most properties in this area are around 2 floors. Most buildings in this region were built in 1985 and are Class B.