A newly listed lakefront compound in Austin could become the most expensive house ever sold in Texas, if a buyer meets the $50 million asking price. Built in 2020 on nearly six acres at the shore of Lake Austin, a reservoir about 10 miles northwest of the capital's downtown, the estate boasts a roughly 7,000-square-foot main house as well as three guest residences. In a promotional video posted to the website of Kuper Sotheby’s International...