Boston Zoning Code Definition of “Green Roof Project”

Green Roof Project. The portion(s) of building or structure roof area with vegetation or plantings purposed to reduce Heat Island Effects and provide Storm Water Retention and Thermal Insulation benefits. Additional benefits may include agricultural, habitat, and/or human well-being. Except for intensive and agricultural plantings, Green Roof systems should be drought resistant and not require irrigation once established. The Green Roof Project may consist of extensive or intensive vegetation and/or plantings, or a combination of both, and constructed of either in-place or modular systems.