Most listings are in the $40's per square foot per year. The Solana Beach region is experiencing a decline in rates. In the last 3 months, the median rate fell $10 per sqft per year. That's a 17% decline in rent.
Compared to the rest of the San Diego market, the Solana Beach submarket has more expensive rates, and you'll need to make a great offer to be in this hot region.
In the last 90 days, 6 listings have been posted online, which means new availabilities most likley are leasing quickly. You'll want to be prepared to make an offer immediately. 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 2,000 sqft. Most properties in this region are around 2 stories. Most buildings in this area were built in 1988 and are Class A.