Sorry to crash your boards, but while this house may indeed still be owned by Alpha Phi, it is not occupied by them any longer. Regrettably, Alpha Phi left OU's campus. This house was then briefly occupied by a new sorority at OU - Phi Mu, until ZTA also went off campus, and then the Phi Mus moved into the former ZTA house. I don't know who, if anyone, occupies the old Alpha Phi house now. I know it is not an NPC sorority.
ETA: Jill just informed me that Alpha Phi is coming back to OU next year! Awesome and good luck!!