The following is from WWE.com:
The Show of Shows is coming to the Bay Area. WWE.com can confirm that Levi’s Stadium, the future home of the San Francisco 49ers in Santa Clara, Calif., will host WrestleMania 31 in 2015. This will mark the first time WrestleMania comes to Northern California. As is tradition, the area will also host activities throughout the region for the week-long celebration leading up to WrestleMania itself. Keep checking back with WWE.com for more details on the announcement coming this week!