Jeff Lewis’ big return to Bravo is almost here. In Us’ exclusive sneak peek of the Monday, September 28, series premiere of Still Flipping Out, Jeff, 56, quickly proves he still has a keen eye for design as he showcases one of his most special home renovations to date. “I bought the June Street house in December of 2022,” Jeff shares in a confessional interview. “It was initially going to be a $400,000 renovation. It went from $400,000 to $3 million. I just kept adding and adding and creating and redoing and making it better so I like having a project.” He adds, “I’ve enjoyed all…