ProGov21 Policy Library

Green Roofing

Type Policy Brief or Report

Year 2020

Level City or Town

State(s) All States

Source Sustainable Development Code

Policy Areas Democracy & Governance, Environment & Natural Resources, Public Spaces

Cities can use their zoning codes to mandate sustainable development practices like green roofing, which promotes heat absorption, increases stormwater filtration, and provides recreational opportunities. This policy brief outlines how municipalities have leveraged incentives like...

2015 Chicago Ordinance 1741015 Providing Zoning Incentives for Green Roofs

Type Ordinance or Resolution

Year 2015

Level City or Town

State(s) Illinois

Source City of Chicago

Policy Areas Democracy & Governance, Environment & Natural Resources, Public Spaces

Chicago's zoning code awards a Floor-Area Ratio (FAR) bonus for green roofs that cover more than 50 percent of the roof area in downtown mixed-use districts. Developments with larger green roof plots can earn higher bonuses which incentivizes more green roof development without large...

Cambridge Green Roofs Zoning Ordinance

Type Ordinance or Resolution

Year 2023

Level City or Town

State(s) Massachusetts

Source City of Cambridge

Policy Areas Energy, Environment & Natural Resources, Public Spaces

Cities can use their zoning codes to mandate sustainable development practices. This zoning ordinance establishes green roof development standards for stormwater management, heat mitigation, and recreation. It also requires new buildings of substantial size to include vegetation and...

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