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Matrix by Callison - 5.0 Tools

5.3.1 Code and Zoning Requirements

5.3 Codes and Incentives

Mandate baseline levels of sustainability.

Local code and zoning requirements; e.g., Seattle Green Factor and Seattle Supplement to LEED®. Many apply only to government projects, such as King County and the City of Seattle’s requirements that any County or City building over 5,000 SF achieve a minimum LEED Gold rating. Others, such as the Seattle Green Factor, the UAE’s Estidama, and California’s CALGreen, apply to private projects as well. The ICC has also developed the International Green Construction Code (IGCC), a model code which establishes minimum sustainable design requirements for both new buildings and renovations. (

Research local code and zoning requirements pertaining to sustainability early in the design process.

Code and zoning requirements override cost concerns.

Compliance with requirements ensures baseline benefit.

Requirements vary by project location.