Dallas named top contender for Amazon’s new headquarters

 DFW is very competitive already, and it will only become more so if it's chosen. I think after the announcement is made, it will be too late, and prices will run up even more. So whoever is fortunate enough to already own property near the selected site will win, and anyone who tries to buy afterward will probably overpay. 

So to answer your question, the preparation is to be careful and don't overpay. If it becomes reality, all kinds of investments will benefit, single family, multi-family, flippers, land developers. But again, only if they don't overpay, which is going to become even more challenging once the the selection is made.