Redfin joins rush of companies flipping homes in Austin, further revving up an already-hot housing market

“For whatever reason, Austin, Texas has become ground zero for a lot of these new business models." That's according to Glenn Kelman, CEO of online residential real estate brokerage Redfin. His company is the latest to launch what's known as an iBuyer service in Austin — a way for sellers to get a cash offer on their property within days.