158 Clifton Place was passive house certified as retrofitted to the EnerPhit Standard, authorized by the Passive House Institute. Above, Dr. Wolfgang Feist, a founder of the standard, holds the certificate with PHIUS representative Sharon Gaber, at an event in Germany. Many thanks to the team that got the project over the threshold by just a point. It’s said to potentially be the oldest residential structure or wooden rowhouse in the U.S. to gain certification from the institute. The ways the residence has been heated and cooled over the eras has continued to change.