On average, listings lease in the $40's per square foot per year. The Stevenson Ranch submarket is going through a a rise in rates. In the last 3 months, the median rate went up $3 per sqft per year. That's a 8% rise in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Stevenson Ranch region 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 been made available, which means office spaces 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 on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,340 sqft. Most buildings in this market are around 3 floors. Most buildings in this region were built in 2003 and are Class A.