Most listings are in the $20's per square foot per year. The Signal Hill submarket is seeing a an increase in rates. In the last 3 months, the median rate increased $29 per sqft per year. That's a Inf% rise in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Signal Hill region has less expensive rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 6 listings have come on the market, which means new listings are probably leasing quickly. You'll want to be prepared to make an offer immediately. 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 1,400 sqft. Most buildings in this area are approximately 2 stories. Most buildings in this region were built in 1982 and are Class B.