Furnished Apartments For Rent In Flatbush Brooklyn Ny . Flatbush, brooklyn, ny average rental price, may 2022 $2,085 /mo. Rental amount reduced this large (approximately 1400 sqft) 3 bedroom apartment is located in the vibrant area of ditmas park right off of cortelyou road. New York Roommate Room for rent in Flatbush, Brooklyn 6 Bedroom from www.nyhabitat.com Furnished available (6) garages (100) hardwood floors (134) patio or balcony (39. Apartment rent in brooklyn has increased by 2.9% in the past year. From data that we've compiled, listings range from $2,125 in the lower quartile to $3,000 in the upper quartile.