The Loop at Mattapan Station in Boston will provide 135 affordable and market-rate residential units, plus retail and community space, next to a Massachusetts Bay Transportation Authority Red Line station. Designed to Passive House energy standards, the building includes a rooftop solar array and a high-performance building envelope, as well as e-bike stations. WHAT IT TAKES TO MAKE GREEN AFFORDABLE HOUSING MAKE SENSE SPRING 2022 URBAN LAND 47 PRESERVATION OF AFFORDABLE HOUSING