Walking through the frame of his soon-to-be new home on a recent morning, an excited Ozzy Herrera could envision the future. A brown leather sofa to match the floors. Terra-cotta-colored walls. A bar cart near the kitchen. Herrera, who works two jobs at Atlanta 's airport, never imagined he would own a home at the age of 27. “It’s special. It’s magical,” he said. In May, nearly 1,000 volunteers with Habitat for Humanity will complete Herrera's new home and 23 other affordable housing units in Atlanta's Sylvan Hills neighborhood for the 40th Carter Work Project. The intensive, weeklong building sessions named after former President Jimmy Carter and his late wife Rosalynn have constructed roughly 5,000 homes in 14 countries since 1984. The project is returning to Atlanta for the first time since 1988, when the Carters helped construct 21 homes in another neighborhood.…