The typical asking rate per listing is in the $10's per square foot per year. The French Quarter region is going through a a boost in rates. In the last 3 months, the median rate increased $18 per sqft per year.
In the last 90 days, 1 listings have been posted online, which means office spaces are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,960 sqft. Most buildings in this area are close to 4 floors. Most buildings in this market were built in 1975 and are Class A.
Public administration is the dominant industry in this area. Most of the folk of French Quarter work from home. Commuting more than an hour and a half a day is the norm for those who opt to reside in this part of town.