On average, listings lease in the $40's per square foot per year. The Newport Beach submarket is going through a decline in rates. In the last 3 months, the median rate fell $7 per sqft per year. That's a 13% decrease in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Newport Beach submarket has higher rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 97 listings have been posted online, so you'll want to check back regularly for new listings. About 2% of the listings in the Newport Beach are subleases, so you will probably have to consider a longer term lease. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
Even though the median size is 2,600 sqft, there are still 0 office spaces below 2,000 sqft. Most buildings in this area are around 3 stories. Most buildings in this area were built in 1980 and are Class B.