OneRepublic frontman Ryan Tedder knows that, at first glance, his ownership of a bunch of office buildings in Las Vegas doesn’t make any sense. After all, he’s a Grammy-winning songwriter and producer known for such hits as “Apologize,” “Stop and Stare” and other tracks. In other words, not the usual profile of a real estate investor who buys buildings in Southern Nevada office parks. “I’m aware of … how random this looks” he said in an interview with the Las Vegas Review-Journal. But as Tedder described it, Las Vegas is an ideal place to buy commercial properties. And now he’s expanding his presence in town with a development that aims to bring a new wave of high-end, and high-priced, office space to the suburbs. Tedder and partners held a ceremonial groundbreaking Thursday for Halo Tower , a planned eight-story office building in the southwest Las Vegas Valley.…