On average, listings lease in the $30's per square foot per year. The Laguna Hills submarket is going through a an increase in rates. In the last 3 months, the median rate increased $5 per sqft per year. That's a 15% increase in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Laguna Hills submarket has greater rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 32 listings have been posted online, which means leases most likley are 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 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 1,680 sqft. Most properties in this region are approximately 2 floors. Most buildings in this area were built in 1982 and are Class B.