While Elon Musk is publicly making a big deal about moving to Texas and cozying up to the governor, behind the scenes his tunnel-building venture, Boring Co., is wrangling with local authorities in the state over a host of seemingly mundane permitting issues.

Since Boring bought land last May to create a research and development center in Bastrop, Texas, a rural area outside Austin, the company has put workers up on mobile homes at the site without authorized sewage facilities, failed to get air and stormwater permits and built a driveway without first getting official approval, according to documents obtained by Bloomberg News through a public records request.

The company’s dealings with Bastrop are yet another illustration of how Musk’s businesses often push the boundaries of or simply ignore regulations that bind other companies. In recent years his Tesla restarted production at its Fremont plant in defiance of pandemic rules to stay closed, Boring tried to build a tunnel in Los Angeles without going through an environmental review process and the U.S. Securities and Exchange Commission is examining the disclosure of Musk’s stake in Twitter.