Mandating green building

18 Feb

The City of Copenhagen has set up four requirements for green roofs.In 1992 a direct subsidy program was started, providing .13 per square foot (.70/m), paying up to 50% of the capital cost of installing a greenroof (Charlie Miller publication, 1998).By 1996, over 10 million square meters of greenroofs were constructed in Germany alone (Green Roofs For Healthy Cities). Due to the legislative and financial support of European state and municipal governments, the greenroof industry has grown into a vibrant, multi-dollar market in Germany, France, Austria and Switzerland among others.In 1996 a survey done by Zentralverband Gartenbau e. (ZVG), the Gardening Central Association, revealed that approximately 50%, or over 80 cities in Germany offered incentives to building owners utilizing greenroofs.According to Green Roofs for Healthy Cities, 80% of the greenroofs are extensive, involving low growing media, plant diversity and lower costs.

Federal environmental laws require mitigation or compensation for the destruction of natural open space caused by development.