On average, listings lease in the $20's per square foot per year. The Hawthorne submarket is experiencing a an increase in rates. In the last 3 months, the median rate rose $26 per sqft per year.
In the last 90 days, 1 listings have come on the market, which means new availabilities are probably leasing quickly. You'll want to be prepared to make an offer immediately. About 100% of the available space in the Hawthorne 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,800 sqft. Most buildings in this area are around 2 floors. Most buildings in this region were built in 1987 and are Class B.