(VCBO Architecture via Salt Lake City)A rendition of the PaperBox Lofts project, to be built at about 340 West 200 South in downtown Salt Lake City. Developers Clearwater Homes and Peg Development broke ground Tuesday to construct three mix-use buildings with a total of 184 residential units and about 2,266 square feet of retail space on the two-acre strip of land, formerly occupied by the Paper Box Company.