Todd Waller wasn’t expecting to spend the latter half of his 30s living with roommates. But in late 2022, following a breakup with his girlfriend, he needed to find a new place to live, quickly.  A social worker based in the Atlanta metro, Waller started googling “efficiency apartments” and stumbled onto an ad for PadSplit, a company founded in 2017 that lets property owners rent out individual furnished bedrooms in single-family homes by the week. “It said I could get approved right away and move in tomorrow,” he recalled. There was no security deposit required. All of a sudden, Wa...