Most listings are in the $0's per square foot per year. The Fort Greene region is experiencing a decrease in rates. In the last 3 months, the median rate fell $66 per sqft per year. That's a 100% decline in rent.
In the last 90 days, 1 listings have been listed, which means leases most likley are leasing quickly. You'll want to be prepared to make an offer immediately. 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 1,830 sqft. Most buildings in this market are around 10 stories. Most buildings in this area were built in 1945 and are Class A.
Not much of the real estate is used for commercial space, so it might be hard to find office space. Wholesale trade is the dominant industry in this area. Most of the folk of Fort Greene work from home. Commuting around an hour and a half a day is the norm for those who opt to reside in this part of town.