The typical asking rate per listing is in the $30's per square foot per year. The El Cajon submarket is seeing a an increase in rates. In the last 3 months, the median rate rose $13 per sqft per year. That's a 74% increase in rent.
Compared to the rest of the San Diego market, the El Cajon region has less expensive rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 16 listings have been listed, which means listings are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 81% of the available space in the El Cajon are subleases, so you might be able to snag a great spot on a short term. 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 1,490 sqft. Most buildings in this region are around 2 floors. Most buildings in this region were built in 1978 and are Class C.