The Sierra Club is suing the California Coastal Commission in an effort to halt approval of U2 guitarist The Edge's plans to build five mansions on a Malibu ridge.
The lawsuit filed in Los Angeles Superior Court says the commission didn't properly evaluate the project before granting approval last month.
Among other things, the Sierra Club maintains the commission didn't consider the impact that putting homes in Malibu's Sweetwater Mesa area would have on air quality and greenhouse gas emissions.
Commission spokeswoman Noaki Schwartz said that her agency hadn't yet reviewed the lawsuit and couldn't comment.
Applications for the proposed development led by The Edge, whose real name is David Evans, first came before the commission in 2011. When the panel denied the plan after complaints from environmental groups, surfers and many Malibu residents, he and three other property owners — who haven't been identified — sued, saying the action amounted to an unconstitutional taking of property.
The commission and the owners eventually agreed in December on a scaled-down version of the project, with the houses clustered more closely together and set farther from the ridgeline.
The lawsuit alleges the project is in a protected wildlife habitat and that the houses could induce other development in the mountains above Malibu.
Los Angeles Times