Most listings are in the $40's per square foot per year. The Carroll Gardens region is experiencing a a rise in rates. In the last 3 months, the median rate rose $41 per sqft per year.
Compared to the rest of the New York City market, the Carroll Gardens submarket has smaller rates, so you should have no trouble finding a great deal in this depreciated 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 tour spaces as quick as possible. About 83% of the available space in the Carroll Gardens are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 2,500 sqft. Most buildings in this market are close to 3 floors. Most buildings in this market were built in 1931.
Not much of the real estate is used for commercial space, so it might be hard to find office space. Health care is the dominant industry in this area. Most of the folk of Carroll Gardens work from home. Commuting close to 30 minutes a day is the norm for those who opt to reside in this part of town.