The typical asking rate per listing is in the $30's per square foot per year. The Carlsbad submarket is going through a decrease in rates. In the last 3 months, the median rate decreased $5 per sqft per year. That's a 13% decline in rent.
Compared to the rest of the San Diego market, the Carlsbad submarket has less expensive rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 68 listings have been listed, so you'll want to check back regularly for new listings. About 3% of the office spaces in the Carlsbad are subleases, so you will probably have to focus your search on direct office leases. 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 2,400 sqft. Most buildings in this region are approximately 2 floors. Most buildings in this area were built in 1998 and are Class B.