The typical asking rate per listing is in the $50's per square foot per year. The Lake San Marcos region is experiencing a a boost in rates. In the last 3 months, the median rate rose $53 per sqft per year.
Compared to the rest of the San Diego market, the Lake San Marcos submarket has more expensive rates, and you'll have to negotiate above asking rent to be in this hot submarket.
In the last 90 days, 5 listings have been listed, which means new availabilities might be leasing quickly. 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 690 sqft.