Most listings are in the $20's per square foot per year. The El Cajon region is seeing a decrease in rates. In the last 3 months, the median rate fell $8 per sqft per year. That's a 27% decrease in rent.
Compared to the rest of the San Diego market, the El Cajon submarket has smaller rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 11 listings have been listed, which means spaces 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 2,280 sqft. Most buildings in this region are close to 2 stories. Most buildings in this region were built in 1978 and are Class B.