1,000+ extra square feet in NYC... for "free?" Don't just build up—dig down. In NYC brownstone development, land is the most expensive commodity. But there’s a trick to beating the limits. Because below-grade space doesn’t count against your buildable square footage, digging out a basement is essentially "free" space for your build. What would you do with an extra 1,000 feet of "free" space? Gym? Theater? Wine cellar? #BrownstoneRestoration #HistoricRenovation #InteriorConstruction #LuxuryHomeBuilding #ConstructionTips #NYCRealEstate