Gregory C. O’Connell Jr., a progressive developer who was responsible for much of the revitalization of Brooklyn’s Red Hook neighborhood, died on August 2 at his home in Geneseo, New York. He was 83.

A former N.Y.P.D. detective, he rejuvenated properties on the Brooklyn waterfront and restored a historic village in upstate New York. By Sam Roberts Gregory C. O’Connell, a former decorated New York ...