Phoenix Sustainability Bonus

The sustainability bonus system is designed to provide projects that exhibit environmentally friendly design and performance elements with additional entitlements. Credits are awarded based on percentage of parking spaces that use vegetation, low-sloped structural shading with a minimum Solar Reflective Index (SRI) of 29 or uses solar structures for shading; percentage of hardscape surface area, including pedestrian walkways, private surface driveways, and parking stalls, that use permeable paving or similar material that allows water to permeate the surfaces; the percentage of nonpotable or gray water uses for required irrigation; the percentage of building energy usage being provided by on-site renewable sources; the percentage that the building outperforms the current energy code standard and percent of renewable energy purchased to meet the energy demand for the building; the degree to which the building exceeds the minimum landscaping requirements by providing three-inch caliper or larger size trees and the preservation of all viable large mature trees (over six-inch caliper) on the site; and the percentage of affordable housing units through a deed restriction.