Construction has reached street level on 204 4th Avenue, a 13-story residential building in Gowanus, Brooklyn. With L+Z Architecture as the executive architect and developed by Avery Hall and Gindi Capital, the 200,000-square foot structure will yield 193 rental units and 14,000 square feet of ground-floor retail space, and is part of a wave of upcoming residential projects that is expected to dramatically transform the neighborhood following the approved Gowanus rezoning. Leeding Builders Group is the general contractor for the half-acre property, which is alternately addressed as 655 Union Street and bound by Sackett Street to the north and Raul Vasquez Jr. Place to the south.