Most listings are in the $30's per square foot per year. The Altadena region is going through a a boost in rates. In the last 3 months, the median rate went up $31 per sqft per year.
Compared to the rest of the Metropolitan Los Angeles market, the Altadena region has smaller rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 0 listings have been posted online, which means new availabilities might be leasing quickly. You'll want to be prepared to make an offer immediately. About Inf% of the available leases in the Altadena are subleases, so you might be able to snag a great spot on a short term. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
Even though the median size is 33,990 sqft, there are still 0 listings below 2,000 sqft. Most buildings in this area are around 1 stories. Most buildings in this market were built in 1946 and are Class A.