An architect who has offered to buy and restore a controversial Orange County, N.Y. government building, designed by Paul Rudolph but panned by many as an eyesore, presented detailed plans Friday for his proposal to turn it into an arts center.

The county has been debating whether to demolish the building, which had been used as its government center, or perhaps renovate it. The architect, Gene Kaufman, a partner at Gwathmey Siegel Kaufman Architects in New York City, had previously announced that he hoped to restore the building. The plans presented Friday to Orange County leaders gave his detailed vision of what he hopes to do.