“There’s an unlimited demand for small office tenants in the Brooklyn market. It’s unlimited,” [Dan Marks, TerraCRG CEO] said. “If you have a building with 1,000-square-foot units, you’re going to fill that building up. … I would say that the vacancy rate for older buildings with multiple units in it is very low. We look at a lot of converted warehouses throughout the borough for clients, and they are almost all 100 percent occupied. We’re talking buildings that have 50 to 100 tenants in these old converted warehouses, almost all full.”