Source Note: TRD analysis is of closed sales provided by StreetEasy, LavaMap and the firms. Includes Brooklyn residential sales (condo, co-op, single-family home and multi-family dwelling with no commercial component) recorded on ACRIS in 2021. Only sell-side deals were counted. Firms that work exclusively for a developer were not counted. Off-market deals were not counted. Subsidiary and umbrella firms were not consolidated. All firms were contacted; not all firms participated.