Loci Architecture (www.lociarchitecture.com) has completed work on the renovation of a 3,000 s/f, four-bedroom triplex condominium apartment on Broadway in the SoHo Cast Iron Historic District, according to David Briggs, Loci principal, who served as project leader. The $4.75 million project encompassed renovating the top two floors of a six-story building, adding a penthouse, and creating upper and lower roof terraces. Bluestone and a pergola, built with sustainably harvested ipé, wrap the penthouse. The lower terrace includes an outdoor kitchen, fire pit and dining area. A glass and ipé staircase lead to the upper terrace, where a hot tub and sun deck have views of the skyline. The remodeled interior contains a two-story-high stair wall, in American black walnut, with stainless steel trim connecting each floor. The walnut veneer was purchased from Forest Stewardship Council-controlled sources, and the rooms have been finished with fabrics and rugs that are naturally low-emitting materials. "Using construction materials that either contain a high percentage of recycled content or are formaldehyde-free, this project is an expression of how elegance and responsible design can be part of a healthy, beautiful family home," said Briggs. London-based Keech Green was the interior designer, and SilverLining Interiors served as general contractor. The SoHo Cast Iron District is a fashionable community, centered along Broadway below Houston Street, and characterized by hundreds of industrial-style buildings with cast iron architectural elements. Many of those structures today are home to art galleries and artists' lofts. It was designated an historic district in 1973 by the city's Landmarks Preservation Commission.