Most listings are in the $10's per square foot per year. The East Los Angeles region is seeing a an increase in rates. In the last 3 months, the median rate went up $17 per sqft per year. That's a Inf% rise in rent.
Compared to the rest of the Metropolitan Los Angeles market, the East Los Angeles region has smaller rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 6 listings have been posted online, which means office spaces are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. 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 740 sqft. Most properties in this market are around 1 floors. Most buildings in this area were built in 1948 and are Class B.