At a conference this month celebrating the 1961 Zoning Resolution, Deputy Mayor Robert Steel announced the city's 50th birthday gift to its 3,500-page zoning code: a set of "green zoning" proposals that would encourage energy-efficient construction, retrofits and installation of solar panels and green roofs.
Green is good. But the idea whose time has truly come after half a century is performance zoning rather than regulating on the basis of outdated categories.

