The typical asking rate per listing is in the $0's per square foot per year. The Brooklyn Heights region is going through a decline in rates. In the last 3 months, the median rate fell $59 per sqft per year. That's a 100% decrease in rent.
In the last 90 days, 4 listings have come on the market, which means listings most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 50% of the office spaces in the Brooklyn Heights are subleases, so you might be able to snag a great spot on a short term. 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 4,000 sqft, there are still 0 new listings below 2,000 sqft. Most properties in this area are close to 12 stories. Most buildings in this area were built in 1920 and are Class B.
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 market. Commute by taxi is the most popular way to get to work amongst Brooklyn Heights folk. Commuting between 30 and 45 minutes a day is the norm for those who opt to reside in this part of town.