The typical asking rate per listing is in the $20's per square foot per year. The Vista submarket is going through a decrease in rates. In the last 3 months, the median rate fell $4 per sqft per year. That's a 12% decline in rent.
Compared to the rest of the San Diego market, the Vista region has less expensive rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 42 listings have been posted online, so you'll want to check back regularly for new listings. About 2% of the available space in the Vista are subleases, so you will probably have to consider a longer term lease. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 2,840 sqft, there are still 0 listings below 2,000 sqft. Most properties in this area are close to 2 floors. Most buildings in this market were built in 1999 and are Class B.