Downtown’s high-rise boom continues to migrate outwards toward the freeway ring, as plans emerge for yet another residential tower in South Park. According to a case filing from the Los Angeles Department of City Planning, an approximatley one-acre property at 1323-1349 S. Grand Avenue could be redeveloped with a 28-story mixed-use building.  The project, which would replace a nondescript commercial building, would feature 284 residential units, 6,300 square feet of retail space and parking on five above-grade levels and one subterranean level. Sources indicate that the project is being designed by TCA Architects, which operates out of a nearby office in South Park.  TCA has worked on several of the newest residential developments in Downtown, including a proposed 33-story tower near Grand Central Market. Renderings from from the TCA website depict a glass tower featuring a large skydeck and an open-air pool.  However, more recent TCA projects, including Onyx and G12, are also portayed in the images.  The project’s developer is listed as the Charles Company. The proposed tower sits one block south of a similar 24-story development proposed by the Chinese developer City Century.  Farther north, construction is already underway on a 37-story building from Mack Urban.