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Denver's "green" roof law is repealed and replaced

The Denver City Council unanimously voted Oct. 29, 2018, to repeal and replace its green roof law approved in 2017 that required rooftop greenery on buildings larger than 25,000 square feet.

The revised law now will require light-colored, reflective "cool roofs," and building developers can choose one of several new options for meeting environmental goals: build green space into the structure or lot; pay a per-square-foot fee to fund green space or energy-efficiency elsewhere; implement renewable energy; or meet standards for an environmental certification program, such as LEED.

As with the original law, the new law will affect new construction and reroofing projects on buildings larger than 25,000 square feet. The regulations are expected to be more cost-effective and achieve a broader array of environmental goals.