There are almost 1,700 new apartments in nine buildings set to come on the market in Center City and its environs this year and next, according to industry data. Among them are the 163 units being created out of the shell of the Goldtex building, which overlooks the Reading Viaduct as it makes its curve toward Center City. Goldtex, built in 1908 as a ladies shoe factory, is a sustainable project designed by Kling Stubbins and developed by Matt and Mike Pestronk of Post Brothers. It will have a restaurant and a cafe at street level.