Compared to the rest of the San Diego market, the Coronado region has more expensive rates, and you'll have to negotiate above asking rent to be in this hot submarket.
In the last 90 days, 2 listings have come on the market, which means leases most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 50% of the office spaces in the Coronado 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 680 sqft. Most buildings in this area are close to 3 stories. Most buildings in this area were built in 1991 and are Class B.