Compared to the rest of the San Diego market, the Casa de Oro-Mount Helix submarket has lower rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 0 listings have been listed, which means new availabilities most likley are going fast. You'll want to be prepared to make an offer immediately. About NaN% of the office spaces in the Casa de Oro-Mount Helix are subleases, so you will probably need to sign a longer term lease with the landlord directly. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 900 sqft. Most buildings in this region were built in 1986 and are Class C.