Over the next year, the central Austin rental apartment vacancy rate is expected to jump significantly from 3.6 percent to 9.4 percent. This negative trend is in stark contrast to what is happening in the rest of the City, where employment growth and migration are reversing the current apartment supply glut. According to market data from Marcus & Millichap Real Estate Investment Brokerage, citywide apartment vacancy rates are expected to drop 9% this year. In hot areas of the city -- such as the south central area near South Congress Ave, vacancy is expected to drop significantly as more . . .