On average, listings lease in the $30's per square foot per year. The South Pasadena submarket is going through a a boost in rates. In the last 3 months, the median rate rose $39 per sqft per year.
Compared to the rest of the Metropolitan Los Angeles market, the South Pasadena submarket has higher rates, and you'll need to pay a premium to be in this hot region.
In the last 90 days, 3 listings have come on the market, which means office spaces are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 233% of the listings in the South Pasadena 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,700 sqft. Most buildings in this region are around 2 floors. Most buildings in this region were built in 1950 and are Class B.