Most listings are in the $50's per square foot per year. The Newport Beach region is experiencing a a rise in rates. In the last 3 months, the median rate rose $18 per sqft per year. That's a 49% rise in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Newport Beach region has higher rates, and you'll have to negotiate above asking rent to be in this hot submarket.
In the last 90 days, 96 listings have been made available, so you'll want to check back regularly for new listings. About 5% of the available space 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,220 sqft. Most properties in this market are approximately 2 stories. Most buildings in this region were built in 1980 and are Class B.