Most listings are in the $0's per square foot per year. The Long Beach region is going through a decline in rates. In the last 3 months, the median rate fell $17 per sqft per year. That's a 100% decrease in rent.
In the last 90 days, 0 listings have been listed, which means spaces are probably going fast. You'll want to be prepared to make an offer immediately. About NaN% of the available space in the Long Beach are subleases, so you will probably have to focus your search on direct office leases. 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 sqft. Most buildings in this market were built in 2006 and are Class A.