Most listings are in the $30's per square foot per year. The Arcadia region is experiencing a a rise in rates. In the last 3 months, the median rate went up $1 per sqft per year. That's a 2% rise in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Arcadia submarket has lower rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 5 listings have come on the market, which means new listings might be going fast. You'll want to be prepared to tour spaces as quick as possible. 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 1,380 sqft. Most properties in this area are close to 2 floors. Most buildings in this market were built in 1984 and are Class B.