There was a lot to like in Austin when Kevin Longley moved there a month and a half ago from Maryland’s Montgomery County. His wife had gotten a promotion at her tech company, and their new city already had a solid reputation as a less expensive, more chill Silicon Valley. They bought a 3,000-square foot, five-bedroom house, far bigger than what they could afford outside of D.C. There were breakfast tacos, and amazing barbecue, and weekend day trips to nearby lakes with their 5-year-old daughter.