The typical asking rate per listing is in the $30's per square foot per year. The Santa Clarita region is going through a a rise in rates. In the last 3 months, the median rate rose $3 per sqft per year. That's a 10% rise in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Santa Clarita submarket has greater rates, and you'll need to make a great offer to be in this hot submarket.
In the last 90 days, 89 listings have been listed, so you'll want to check back regularly for new listings. About 8% of the available space in the Santa Clarita are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 1,460 sqft. Most properties in this area are approximately 2 floors. Most buildings in this market were built in 2001 and are Class A.