On average, listings lease in the $10's per square foot per year. The Bellflower submarket is going through a decrease in rates. In the last 3 months, the median rate fell $7 per sqft per year. That's a 26% decline in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Bellflower region has less expensive rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 4 listings have been made available, which means new listings are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 200% of the available leases in the Bellflower are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 2,350 sqft. Most buildings in this area are close to 2 floors. Most buildings in this area were built in 1954 and are Class B.