The typical asking rate per listing is in the $40's per square foot per year. The South Pasadena region is experiencing a a rise in rates. In the last 3 months, the median rate rose $13 per sqft per year. That's a 38% rise in rent.
Compared to the rest of the Metropolitan Los Angeles market, the South Pasadena submarket has more expensive rates, and you'll need to pay a premium to be in this hot region.
In the last 90 days, 3 listings have been made available, which means leases are probably going fast. You'll want to be prepared to make an offer immediately. 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 500 sqft. Most properties in this market are close to 2 floors. Most buildings in this area were built in 1950 and are Class B.