The typical asking rate per listing is in the $30's per square foot per year. The Altadena submarket is going through a decline in rates. In the last 3 months, the median rate fell $2 per sqft per year. That's a 5% decline in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Altadena region has lower rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 6 listings have been posted online, which means listings 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 available, so finding a space for a small business might be tough.
Even though the median size is 12,670 sqft, there are still 0 leases below 2,000 sqft. Most buildings in this market are around 1 stories. Most buildings in this area were built in 1946 and are Class A.