Early examples of super insulated efficiency, there are four affordable Lower East Side People's Mutual Housing Association apartment buildings designed by Chris Benedict RA and Henry Gifford are on East 3rd Street between Avenues A and D.
Instead of the usual energy efficiency achieved by using new and fancy technologies, they used normal materials with a better design twenty years ago. As a result they have created the first energy efficient buildings for the same costs as those for regular construction. The company is a proponent of Passive House principles, and building code that supports it.